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JP2015065502

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DESCRIPTION JP2015065502
An object of the present invention is to make it possible to suppress power consumption of a
device even when the signal level of an audio signal of an output unit other than a main output
unit is less than a predetermined value. SOLUTION: A control unit 23 outputs Zone2 output by a
main output unit switch 15 when the function of the main output unit 7 is off, the function of the
Zone2 output unit 8 is on, and the function of the Zone3 output unit 9 is off. The analog audio
input terminal 5 connected to the unit 8 and the main output unit 7 are connected, and when the
signal level of the audio signal detected by the DSP 13 is less than a predetermined value, supply
of the power supply voltage to the Zone 2 output unit 8 Shut off. [Selected figure] Figure 2
Voice processing device
[0001]
The present invention relates to an audio processing apparatus that outputs an audio signal input
from an audio input terminal to a plurality of output units.
[0002]
As an audio processing apparatus, for example, an AV amplifier that amplifies an audio signal
and outputs it to a speaker is known.
The AV amplifier described in Patent Document 1 includes a main output unit that is an output
unit of an audio signal to a main speaker disposed in a main room (first room) and a Zone 2
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speaker disposed in a Zone 2 room (second room). Audio signal output unit, a Zone 3 output unit
that is an output unit of audio signals to Zone 3 speakers disposed in a Zone 3 room (third room),
a plurality of audio input terminals, and a plurality of audio input terminals A microcomputer
that controls an audio signal selected from an audio signal input from an audio input terminal to
a main output unit, a Zone 2 output unit, and a Zone 3 output unit, and a microcomputer that
controls each unit configuring an AV amplifier " And etc. are provided. Each of the plurality of
output units includes a volume controller that adjusts the volume level of the audio signal, an
amplification unit that amplifies the audio signal, and the like.
[0003]
Some conventional AV amplifiers have a normal operation mode (normal mode) and a standby
mode that consumes less power than the normal mode. In such an AV amplifier, in the normal
mode, the microcomputer detects the signal level of the audio signal output to the main output
unit. When the functions of the Zone 2 output unit and the Zone 3 output unit are off and the
signal level of the audio signal output to the main output unit is less than a predetermined value
(for example, zero (silence)), the microcomputer The AV amplifier is shifted from the normal
mode to the standby mode. Accordingly, when the level of the audio signal of the main output
unit is less than the predetermined value, the power consumption of the AV amplifier can be
suppressed.
[0004]
JP, 2013-046265, A
[0005]
In the above-described conventional AV amplifier, when the signal level of the audio signal
output to the main output unit is less than the predetermined value, it is possible to shift to the
standby mode to suppress power consumption, but the main output unit There is a problem that
the power consumption of the AV amplifier can not be suppressed when the level of the audio
signal of the other output unit is less than the predetermined value.
[0006]
An object of the present invention is to make it possible to suppress power consumption of the
device even when the signal level of the audio signal of the output unit other than the main
output unit is less than a predetermined value.
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[0007]
According to a first aspect of the present invention, a voice processing apparatus includes: a
plurality of voice input terminals to which voice signals are input; and a first output unit and a
second output unit to which voice signals input from the plurality of voice input terminals are
output. A first receiving unit configured to receive a selection of an output unit to which an audio
signal input from the plurality of audio input terminals is to be output, and first connecting any
one of the plurality of audio input terminals and the first output unit A connection unit, a second
connection unit connecting any of the plurality of audio input terminals to the second output
unit, and a first detection unit connected to the first output unit to detect a signal level of an
audio signal And controlling the first connection unit and the second connection unit based on
the selection received by the reception unit, and controlling the supply of the power supply
voltage to the first output unit and the second output unit. A voice processing apparatus
comprising: The control unit is connected to the second output unit by the first connection unit
when the function of the first output unit is off and the function of the second output unit is on. A
voice input terminal is connected to the first output unit, and when the signal level of the voice
signal detected by the first detection unit is less than a predetermined value, the supply of the
power supply voltage to the second output unit is shut off. It is characterized by
[0008]
In the present invention, when the function of the first output unit is off and the function of the
second output unit is on, the control unit is configured to output the audio connected to the
second output unit by the first connection unit. Connect the input terminal and the first output
unit.
At this time, when the signal level of the audio signal detected by the first detection unit is less
than the predetermined value, the control unit cuts off the supply of the power supply voltage to
the second output unit.
As a result, even when the signal level of the audio signal of the second output unit other than
the first output unit which is the main output unit is less than the predetermined value, the
power consumption of the device can be suppressed.
[0009]
In addition, since the signal level of the audio signal output to the second output unit is detected
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using the first detection unit connected to the first output unit and detecting the signal level of
the audio signal, There is no need to provide means for detecting the signal level of the audio
signal being output to the second output unit.
[0010]
A voice processing apparatus according to a second aspect of the present invention is the voice
processing apparatus according to the first aspect, wherein any one of a third output unit to
which voice signals input from the plurality of voice input terminals are output and any of the
plurality of voice input terminals A third connection unit for connecting the third output unit, and
the control unit further controls the third connection unit based on the selection received by the
reception unit, and The control unit controls supply of a power supply voltage to a third output
unit, and the control unit turns off the function of the first output unit and turns on the functions
of the second output unit and the third output unit. In this case, the voice input terminal
connected to the second output unit by the first connection unit, the voice output terminal
connected to the first output unit, and the voice output terminal connected to the third output
unit, and 1 output part is switched and connected, and the first connection part is the second
output The second output when the audio input terminal connected to the first output unit is
connected and the signal level of the audio signal detected by the first detection unit is less than
a predetermined value Power supply voltage to the unit is cut off, and the first connection unit
connects the voice input terminal connected to the third output unit to the first output unit, and
the first detection When the signal level of the audio signal detected by the unit is less than a
predetermined value, the supply of the power supply voltage to the third output unit is shut off.
[0011]
In the present invention, the first connection unit connects the audio output terminal connected
to the third output unit and the first output unit, and the signal level of the audio signal detected
by the first detection unit is a predetermined value. If less than, the control unit shuts off the
supply of the power supply voltage to the third output unit.
Thereby, in addition to the second output unit, the power consumption of the device can be
suppressed even when the signal level of the audio signal of the third output unit is less than the
predetermined value.
[0012]
A voice processing apparatus according to a third aspect of the present invention is the voice
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processing apparatus according to the second aspect, wherein a total value of signal levels of the
voice signals output to the first output unit, the second output unit, and the third output unit is
calculated. The control unit may further include a second detection unit that detects that the total
value detected by the second detection unit is less than a predetermined value, and the function
of the first output unit is off, and When the functions of the second output unit and the third
output unit are on, the voice input terminal connected to the second output unit by the first
connection unit and the first output unit; The audio input terminal connected to three output
units and the first output unit are switched and connected.
[0013]
When the first connection unit switches and connects the audio input terminal connected to the
second output unit and the first output unit, and the audio input terminal connected to the third
output unit and the first output unit, Due to the error of the switching timing, there is a
possibility that the signal level of the audio signal of the second output unit and the third output
unit may be erroneously detected.
In the present invention, the control unit determines that the detected signal level is
predetermined only when the total value of the signal levels of the audio signals output to the
first output unit, the second output unit, and the third output unit is less than a predetermined
value. In order to determine whether it is less than the value, it is possible to suppress the
problem of determining whether the signal level is less than the predetermined value based on
the signal level detected erroneously.
[0014]
A voice processing apparatus according to a fourth aspect of the invention is the voice
processing apparatus according to the first aspect, wherein the control unit further includes a
normal mode including supply of a power supply voltage to the first output unit, and the first
mode. Controlling the own apparatus to a standby mode which consumes less power than the
normal mode, including the interruption of the supply of the power supply voltage to the output
unit and the second output unit; 1 when the function of one output unit is off and the function of
the second output unit is on and the signal level of the audio signal detected by the first detection
unit is less than a predetermined value It is characterized in that it is in the standby mode.
[0015]
In the present invention, the control unit shifts its own device to the standby mode when the
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signal level of the audio signal of the second output unit other than the first output unit which is
the main output unit is less than the predetermined value. The power consumption of the
apparatus can be further suppressed as compared to the case where only the supply of the
power supply voltage to the circuit is shut off.
[0016]
In the present invention, when the function of the first output unit is off and the function of the
second output unit is on, the control unit is configured to output the audio connected to the
second output unit by the first connection unit. Connect the input terminal and the first output
unit.
At this time, when the signal level of the audio signal detected by the first detection unit is less
than the predetermined value, the control unit cuts off the supply of the power supply voltage to
the second output unit.
As a result, even when the signal level of the audio signal of the second output unit other than
the first output unit which is the main output unit is less than the predetermined value, the
power consumption of the device can be suppressed.
[0017]
FIG. 1 is a block diagram showing a configuration of an AV amplifier according to an
embodiment of the present invention.
It is a block diagram showing an internal configuration etc. of a selector.
It is a figure which shows an example of operation | movement of a selector.
It is a figure which shows an example of operation | movement of a selector. FIG. 6 is a flowchart
showing the processing operation of the AV amplifier when transitioning from the normal mode
to the standby mode. FIG. FIG. 10 is a flowchart showing a processing operation of the AV
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amplifier when the functions of the main output unit, Zone 2 output unit, and Zone 3 output unit
are turned off. FIG. FIG. 10 is a flowchart showing a processing operation of the AV amplifier
when the functions of the main output unit, Zone 2 output unit, and Zone 3 output unit are
turned off. FIG. FIG. 10 is a flowchart showing a processing operation of the AV amplifier when
the functions of the main output unit, Zone 2 output unit, and Zone 3 output unit are turned off.
FIG. FIG. 10 is a flowchart showing a processing operation of the AV amplifier when the functions
of the main output unit, Zone 2 output unit, and Zone 3 output unit are turned off. FIG.
[0018]
Hereinafter, embodiments of the present invention will be described. FIG. 1 is a block diagram
showing the configuration of an AV amplifier 1 (audio processing apparatus) according to the
present embodiment. The AV amplifier 1 is connected to, for example, a DVD player 100a, a CD
player 100b, a TV receiver 100c, and a BD (Blu-ray Disc) player 100d, which are content
reproduction devices. The AV amplifier 1 is connected to the main speaker 200a, the Zone 2
speaker 200b, and the Zone 3 speaker 200c. The AV amplifier 1, the DVD player 100a, the CD
player 100b, the TV receiver 100c, and the BD player 100d are disposed in the main room. The
Zone 2 speaker 200 b is disposed in the Zone 2 room, which is a room different from the main
room. The Zone 3 speaker 200 c is disposed in the Zone 3 room, which is a room different from
the main room. The AV amplifier 1 amplifies an audio signal input from the DVD player 100a or
the like disposed in the main room, and in addition to the main speaker 200a disposed in the
main room the amplified audio signal, a Zone 2 speaker disposed in the Zone 2 room 200b, has a
function of outputting to the Zone 3 speaker 200c disposed in the Zone 3 room.
[0019]
The main speaker 200a has, for example, 5.1 channels (front left audio signal FL, front right
audio signal FR, center audio signal C, surround left audio signal SL, surround right audio signal
SR, subwoofer audio signal SW), or 7. Includes one channel of speakers. Each of the Zone 2
speaker 200 b and the Zone 3 speaker 200 c includes, for example, speakers for two channels
(front left audio signal FL, front right audio signal FR).
[0020]
The AV amplifier 1 will be described in detail below. Although the AV amplifier 1 can output the
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input video signal to the display (not shown) in addition to the audio signal, only the
configuration for outputting the input audio signal to the speaker 200 is for simplicity of
explanation. Will be explained. As shown in FIG. 1, the AV amplifier 1 includes a microcomputer
2, a display unit 3, an operation unit 4, analog audio input terminals 5 (5 a to 5 c), a digital audio
input terminal 6, a main output unit 7, and a Zone 2 output unit 8. , Zone 3 output unit 9, analog
audio output terminals 10 (10a to 10c), selector 11, A / D converter 12, DSP 13, D / A converter
14 and the like.
[0021]
Microcomputer 2 (hereinafter referred to as "microcomputer". ) Is composed of hardware such as
a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM),
and an input / output interface. The CPU controls the hardware configuring the microcomputer 2
to function as each functional unit of the control unit 23 and the like (see FIG. 2) according to the
program stored in the ROM. Note that each functional unit such as the control unit 23 may be
configured by an electronic circuit or the like specialized for arithmetic processing in each
functional unit, or may be another configuration. Details of the microcomputer 2 will be
described later.
[0022]
The display unit 3 displays a setting screen, a volume level, and the like, and is an LCD (liquid
crystal display), a fluorescent display tube, or the like. The operation unit 4 is for receiving a user
operation, and is an operation button or a remote controller provided on the housing of the AV
amplifier 1. The user operates the operation unit 4 to transmit audio signals input from the DVD
player 100a, the CD player 100b, the television receiver 100c, and the BD player 100d to any of
the main speaker 200a, the Zone 2 speaker 200b, and the Zone 3 speaker 200c. It is possible to
instruct the AV amplifier 1 whether to output.
[0023]
The DVD player 100a, the CD player 100b, and the TV receiver 100c are connected to the analog
audio input terminals 5a to 5c, respectively, and an analog audio signal output from the
connected content reproduction apparatus is input. The BD player 100d is connected to the
digital audio input terminal 6, and a digital audio signal output from the BD player 100d is input.
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The number of analog audio input terminals 5 and digital audio input terminals 6 included in the
AV amplifier 1 is not limited to the number exemplified in the present embodiment.
[0024]
The main output unit 7 (first output unit), Zone 2 output unit 8 (second output unit), and Zone 3
output unit 9 (third output unit) are analog audio signals output from the analog audio input
terminal 5 and digital audio An analog audio signal input from the input terminal 6 and D / A
converted is output. The main output unit 7 includes a volume controller 71 that adjusts the
signal level of the analog audio signal, and an amplification unit 72 that amplifies the analog
audio signal. Similarly, the Zone 2 output unit 8 includes a volume controller 81 and an
amplification unit 82, and the Zone 3 output unit 9 includes a volume controller 91 and an
amplification unit 92. An analog audio output terminal 10a is connected to the main output unit
7, and an analog audio signal amplified or the like by the main output unit 7 is output to the
main speaker 200a through the analog audio output terminal 10a. An analog audio output
terminal 10 b is connected to the Zone 2 output unit 8, and an analog audio signal amplified or
the like by the Zone 2 output unit 8 is output to the Zone 2 speaker 200 b via the analog audio
output terminal 10 b. An analog audio output terminal 10 c is connected to the Zone 3 output
unit 9, and an analog audio signal amplified or the like by the Zone 3 output unit 9 is output to
the Zone 3 speaker 200 c via the analog audio output terminal 10 c.
[0025]
The selector 11 receives analog audio input terminals 5a to 5c (DVD player 100a, CD player
100b, TV receiver 100c), digital audio input terminal 6 (BD player) according to an instruction
from a control unit 23 of the microcomputer 2 described later. The main output unit 7, the Zone
2 output unit 8, and the Zone 3 output unit 9 are connected. FIG. 2 is a block diagram showing
an internal configuration of the selector 11 and the like. The selector 11 is a switch for main
output unit 15 (15a, 15b, 15c) (first connection unit), a switch for Zone 2 output unit 16 (16a,
16b, 16c) (second connection unit), a switch for Zone 3 output unit 17 (17a, 17b, 17c) (third
connection portion) are provided. Here, the description of the connection between the digital
audio input terminal 6 and the main output unit 7, the Zone 2 output unit 8, and the Zone 3
output unit 9 is omitted.
[0026]
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The main output unit switch 15 connects one of the analog audio input terminals 5 to the main
output unit 7. For example, when the analog audio input terminal 5a and the main output unit 7
are connected according to an instruction from the control unit 23, the main output unit switch
15a is turned on and the other main output unit switches 15b and 15c are turned off. . The Zone
2 output unit switch 16 connects one of the analog audio input terminals 5 to the Zone 2 output
unit 8. For example, when the analog audio input terminal 5b and the Zone2 output unit 8 are
connected according to an instruction from the control unit 23, the Zone2 output unit switch 16b
is turned on, and the other Zone2 output unit switches 16a and 16c are turned off. . The Zone 3
output unit switch 17 connects one of the analog voice input terminals 5 to the Zone 3 output
unit 9. For example, when the analog audio input terminal 5c and the Zone 3 output unit 9 are
connected according to an instruction from the control unit 23, the Zone 3 output unit switch
17c is turned on, and the other Zone 3 output unit switches 17a and 17b are turned off. .
[0027]
The A / D converter 12 is connected to the main output unit 7 by being connected to the signal
line to the main output unit 7 of the selector 11 via the selector 11, and is output to the main
output unit 7. A / D convert an analog audio signal into a digital audio signal. Then, the A / D
converter 12 outputs the A / D converted digital audio signal to the DSP 13. The A / D converter
12 may be connected to the main output unit 7 without the selector 11. A DSP (Digital Signal
Processor) 13 (first detection unit) is connected to the main output unit 7 via the A / D converter
12 and detects the signal level of the digital audio signal output by the A / D converter 12 Do.
Also, the DSP 13 executes sound field processing and the like on the digital audio signal input
from the digital audio signal input terminal 6. The D / A converter 14 D / A converts the digital
audio signal subjected to the sound field processing and the like by the DSP 13 into an analog
audio signal.
[0028]
Next, the microcomputer 2 will be described. As shown in FIG. 2, the microcomputer 2 functions
as a reception unit 21, a detection unit 22 (second detection unit), and a control unit 23. The
receiving unit 21 receives, based on an operation of the operation unit 4 by the user, a selection
as to which output unit 7-9 the analog audio signal input from the analog audio input terminal 5
is to be output. Further, the receiving unit 21 receives the selection of which function of the
output units 7 to 9 is to be turned on or off based on the operation of the operation unit 4 by the
user. In the present embodiment, "the function of the output unit is on" means that the setting is
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to use the function of the output unit. Conversely, "the function of the output unit is off" means
that the setting is not to use the function of the output unit.
[0029]
The detection unit 22 detects the total value of the signal levels of the analog audio signals
output to the main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9. Here,
the signal levels of the analog audio signals output to the main output unit 7, the Zone 2 output
unit 8, and the Zone 3 output unit 9 are added together and supplied to the A / D port of the
microcomputer 2. The detection unit 22 A / D converts an analog audio signal supplied to the A /
D port, and detects the signal level.
[0030]
The control unit 23 controls the main output unit switch 15, the Zone 2 output unit switch 16,
and the Zone 3 output unit switch 17 based on the selection received by the reception unit 21.
For example, when the receiving unit 21 receives the selection to output the analog audio signal
input from the analog audio input terminal 5a (DVD player 100a) to the main output unit 7, the
control unit 23 uses the main output unit switch 15a. The analog voice input terminal 5a and the
main output unit 7 are connected. Further, the control unit 23 controls the functions of the main
output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9 to be on or off based on the
selection received by the reception unit 21. Specifically, control unit 23 stores a setting as to
whether the functions of main output unit 7, Zone 2 output unit 8 and Zone 3 output unit 9 are
turned on or off, and the selection received by reception unit 21 , The setting of each output unit
7-9 is rewritten from on to off or from off to on. For example, when the reception unit 21
receives a selection to turn on the function of the Zone 2 output unit 8 from off, the control unit
23 rewrites the setting of the Zone 2 output unit 8 from off to on. Also, for example, when the
receiving unit 21 receives a selection to turn off the function of the Zone 2 output unit 8, the
setting of the Zone 2 output unit 8 is rewritten from on to off.
[0031]
Here, in the present embodiment, a circuit that supplies a power supply voltage to the main
output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9 is shared. For example,
there are two circuits for supplying the power supply voltage: the circuit for supplying the power
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supply voltage to the microcomputer 2 and its peripheral circuits, and the circuit for supplying
the power supply voltage to the other parts. And a standby mode for supplying a power supply
voltage to its peripheral circuits, and a normal mode for supplying a power supply voltage to
each part constituting the AV amplifier 1. In the normal mode, the power supply voltage is
supplied to all of the main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9.
In the standby mode, no power supply voltage is supplied to all of the main output unit 7, the
Zone 2 output unit 8, and the Zone 3 output unit 9. The standby mode consumes less power than
the normal mode. The control unit 23 controls the AV amplifier 1 to the normal mode and the
standby mode.
[0032]
Further, the control unit 23 controls the function of the main output unit 7 from on to off when
the function of the main output unit 7 is on but the analog audio signal is not output to the main
output unit 7. . As described above, the A / D converter 12 and the DSP 13 are connected to the
main output unit 7. The A / D converter 12 A / D converts the analog audio signal output to the
main output unit 7, and outputs the A / D converted digital audio signal to the DSP 13. The DSP
13 detects the signal level of the digital audio signal and outputs the signal level to the control
unit 23. The control unit 23 outputs an analog audio signal to the main output unit 7 when the
signal level of the digital audio signal output by the DSP 13 is less than a predetermined value
(for example, zero) over a predetermined time (for example, 60 seconds). It is determined that
the main output unit 7 is not turned on, and the function of the main output unit 7 is turned off.
[0033]
Further, when the total value of the signal levels detected by the detection unit 22 is equal to or
greater than a predetermined value, the control unit 23 lowers the power supply voltage
supplied to the main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9 from
high voltage Switch to voltage. As a result, the signal levels (amplitude values) of the analog
audio signals from the amplification units 72, 82, 92 become extremely large, and the
amplification units 72, 82, 92 may be damaged due to heat, overvoltage, overcurrent, or the like.
It is prevented.
[0034]
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The conventional AV amplifier uses the A / D converter and DSP connected to the main output
unit, and when the function of the main output unit is on and the analog audio signal is not
output to the main output unit, It has a function to shut off the supply of the power supply
voltage to the main output unit. However, in the conventional AV amplifier, when the functions of
the Zone 2 output unit and the Zone 3 output unit are on and the analog audio signal is not
output to the Zone 2 output unit and the Zone 3 output unit, the Zone 2 output unit and the Zone
3 output unit It does not have the function to shut off the supply of the power supply voltage to
the Therefore, the AV amplifier 1 of the present embodiment has a configuration for blocking the
supply of the power supply voltage to the Zone 2 output unit 8 and the Zone 3 output unit 9. The
configuration will be described below.
[0035]
The control unit 23 is connected to the Zone 2 output unit 8 by the main output unit switch 15
when the function of the main output unit 7 is off, the function of the Zone 2 output unit 8 is on,
and the function of the Zone 3 output unit 9 is off. And the main output unit 7 are connected. For
example, as shown in FIG. 3, when the analog audio input terminal 5a and the Zone 2 output unit
8 are connected by the Zone 2 output unit switch 16a, the control unit 23 turns on the main
output unit switch 15a, The main output unit switch 15a connects the analog audio input
terminal 5a connected to the Zone 2 output unit 8 with the main output unit 7. As a result, the
analog audio signal output to the Zone 2 output unit 8 is output to the main output unit 7, so the
A / D converter 12 connected to the main output unit 7 is also input to the Zone 2 output unit 8.
Analog audio signal is output. Then, the A / D converter 12 A / D converts the analog audio
signal, and outputs the A / D converted digital audio signal to the DSP 13. The DSP 13 detects
the signal level of the digital audio signal and outputs the signal level to the control unit 23. The
control unit 23 outputs an analog audio signal to the Zone 2 output unit 8 when the signal level
of the digital audio signal output by the DSP 13 is less than a predetermined value (for example,
zero) over a predetermined time (for example, 60 seconds). It is determined that the function is
not turned on, and the function of the Zone 2 output unit 8 is turned off. At this time, since the
functions of all the output units 7 to 9 are turned off, the control unit 23 shifts the AV amplifier
1 from the normal mode to the standby mode.
[0036]
Further, when the function of the main output unit 7 is off, the function of the Zone 2 output unit
8 is off, and the function of the Zone 3 output unit 9 is on, the control unit 23 switches the Zone
3 output unit 9 by the main output unit switch 15. And the main output unit 7 are connected. For
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example, when the analog audio input terminal 5b and the Zone 3 output unit 9 are connected by
the Zone 3 output unit switch 17b, the control unit 23 turns on the main output unit switch 15b
and the main output unit switch 15b. , And the main audio output terminal 7 are connected to
the Zone 3 output unit 9. When the control unit 23 determines that the analog audio signal is not
output to the Zone 3 output unit 9 as described above, the control unit 23 turns off the function
of the Zone 3 output unit 9. At this time, since the functions of all the output units 7 to 9 are
turned off, the control unit 23 shifts the AV amplifier 1 from the normal mode to the standby
mode.
[0037]
Further, when the function of the main output unit 7 is off, the function of the Zone 2 output unit
8 is on, and the function of the Zone 3 output unit 9 is on, the control unit 23 switches the Zone
2 output unit 8 by the main output unit switch 15 The analog audio input terminal 5 and the
main output unit 7 which are connected to each other, and the analog audio input terminal 5 and
the main output unit 7 which are connected to the Zone 3 output unit 9 are switched and
connected. For example, as shown in FIG. 4, the analog voice input terminal 5b and the Zone 2
output unit 8 are connected by the Zone 2 output unit switch 16b, and the analog voice input
terminal 5c and the Zone 3 output unit 9 by the Zone 3 output unit switch 17c. When the control
unit 23 is connected, the control unit 23 first connects the analog audio input terminal 5 b
connected to the Zone 2 output unit 8 and the main output unit 7 by the main output unit switch
15 b. Next, as described above, the control unit 23 determines whether an analog audio signal is
output to the Zone 2 output unit 8 or not. When the control unit 23 determines that an analog
audio signal is not output to the Zone 2 output unit 8 and turns off the function of the Zone 2
output unit 8, next, connection with the Zone 3 output unit 9 is made by the main output unit
switch 15 c. And the main output unit 7 are connected. Then, as described above, the control unit
23 determines whether an analog audio signal is output to the Zone 3 output unit 9 or not. If the
control unit 23 determines that the analog audio signal is not output to the Zone 3 output unit 9
as described above, the control unit 23 turns off the function of the Zone 3 output unit 9. At this
time, since the functions of all the output units 7 to 9 are turned off, the control unit 23 shifts the
AV amplifier 1 from the normal mode to the standby mode.
[0038]
Thus, the control unit 23 shifts the AV amplifier 1 from the normal mode to the standby mode
when the functions of all the output units 7 to 9 are off. That is, the control unit 23 shuts off the
supply of the power supply voltage to each unit constituting the AV amplifier 1 including the
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output units 7 to 9 except the microcomputer 2 and its peripheral circuits, and allows the AV
amplifier 1 to be switched from the normal mode to the standby mode. Do.
[0039]
Next, the processing operation of the AV amplifier when transitioning from the normal mode to
the standby mode will be described based on the flowchart shown in FIG. Here, the case where
the functions of all the output units 7 to 9 are on will be described. First, the control unit 23
determines whether the total value of the signal levels of the analog audio signals output to the
main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9 detected by the
detection unit 22 is less than a predetermined value. It is judged whether or not (S1). When the
control unit 23 determines that the total value of the signal levels of the analog audio signals
output to the main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9 is not
less than a predetermined value, that is, is equal to or more than the predetermined value The
process of S1: No) and S1 is repeatedly performed. When the control unit 23 determines that the
total value of the signal levels of the analog audio signals output to the main output unit 7, the
Zone 2 output unit 8, and the Zone 3 output unit 9 is less than a predetermined value (S1: Yes),
the main output In order to determine whether an analog audio signal is output to the unit 7, it is
determined whether the signal level detected by the DSP 13 is less than a predetermined value
(S2). When it is determined that the signal level detected by the DSP 13 is not less than the
predetermined value, ie, equal to or more than the predetermined value (S2: No), the control unit
23 executes the process of S1.
[0040]
When it is determined that the signal level detected by the DSP 13 is less than the predetermined
value (S2: Yes), the control unit 23 determines whether a predetermined time has elapsed while
the signal level is less than the predetermined value. (S3). When it is determined that the
predetermined time has not elapsed while the signal level is less than the predetermined value
(S3: No), the control unit 23 executes the process of S2. Then, while the signal level is less than
the predetermined value, the control unit 23 repeatedly executes the processes of S2 and S3 until
it is determined that the predetermined time has elapsed (S3: Yes). When it is determined that
the predetermined time has elapsed while the signal level is less than the predetermined value
(S3: Yes), the control unit 23 determines that the analog audio signal is not output to the main
output unit 7, and the main output The function of part 7 is turned off (S4).
09-05-2019
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[0041]
Next, the control unit 23 determines whether the analog audio signal is output to the Zone 2
output unit 8 or not, the analog audio input terminal 5 connected to the Zone 2 output unit 8 by
the main output unit switch 15. And the main output unit 7 (S5). Next, the control unit 23
determines whether the signal level detected by the DSP 13 is less than a predetermined value
(S6). When it is determined that the signal level detected by the DSP 13 is not less than the
predetermined value, that is, is equal to or more than the predetermined value (S6: No), the
control unit 23 executes the process of S1.
[0042]
When it is determined that the signal level detected by the DSP 13 is less than the predetermined
value (S6: Yes), the control unit 23 determines whether a predetermined time has elapsed while
the signal level is less than the predetermined value. (S7). When it is determined that the
predetermined time has not elapsed while the signal level is less than the predetermined value
(S7: No), the control unit 23 executes the process of S6. Then, the control unit 23 repeatedly
executes the processing of S6 and S7 until it is determined that the predetermined time has
elapsed (S7: Yes) while the signal level is less than the predetermined value. When it is
determined that the predetermined time has elapsed while the signal level is less than the
predetermined value (S7: Yes), the control unit 23 determines that the analog audio signal is not
output to the Zone 2 output unit 8, and outputs Zone 2 The function of part 8 is turned off (S8).
[0043]
Next, the control unit 23 determines whether the analog audio signal is output to the Zone 3
output unit 9 or not. Therefore, the analog audio input terminal 5 connected to the Zone 3 output
unit 9 by the main output unit switch 15 And the main output unit 7 (S9). Next, the control unit
23 determines whether the signal level detected by the DSP 13 is less than a predetermined
value (S10). When it is determined that the signal level detected by the DSP 13 is not less than
the predetermined value, ie, equal to or more than the predetermined value (S10: No), the control
unit 23 executes the process of S1.
[0044]
09-05-2019
16
If it is determined that the signal level detected by the DSP 13 is less than the predetermined
value (S10: Yes), the control unit 23 determines whether a predetermined time has elapsed while
the signal level is less than the predetermined value. (S11). When it is determined that the
predetermined time has not elapsed while the signal level is less than the predetermined value
(S11: No), the control unit 23 executes the process of S10. Then, the control unit 23 repeatedly
executes the processing of S10 and S11 until it is determined that the predetermined time has
elapsed while the signal level is less than the predetermined value (S11: Yes). When it is
determined that the predetermined time has elapsed while the signal level is less than the
predetermined value (S11: Yes), the control unit 23 determines that the analog audio signal is not
output to the Zone 3 output unit 9, and outputs the Zone 3 The function of the section 9 is
turned off (S12). Then, the control unit 23 shifts the AV amplifier 1 from the normal mode to the
standby mode because the functions of all the output units 7 to 9 are off (S13).
[0045]
As described above, in the present embodiment, after the control unit 23 turns off the function of
the main output unit 7, the analog audio input terminal 5 is connected to the Zone 2 output unit
8 by the main output unit switch 15. And the main output unit 7 are connected. At this time,
when the signal level of the audio signal detected by the DSP 13 is less than the predetermined
value, the control unit 23 turns off the function of the Zone 2 output unit 8. Further, after turning
off the function of the Zone 2 output unit 8, the main output unit switch 15 connects the analog
audio input terminal 5 connected to the Zone 3 output unit 9 with the main output unit 7. At this
time, when the signal level of the audio signal detected by the DSP 13 is less than the
predetermined value, the control unit 23 turns off the function of the Zone 3 output unit 9. Then,
after turning off the functions of all the output units 7 to 9, that is, when the signal level of the
audio signal detected by the DSP 13 is less than the predetermined value, the control unit 23
moves to each unit including the Zone 2 output unit 8 Shut off the power supply of Thus, even
when the signal level of the audio signal of the Zone 2 output unit 8 other than the main output
unit 7 is less than the predetermined value, the power consumption of the AV amplifier 1 can be
suppressed.
[0046]
Further, in the present embodiment, the signal level of the audio signal output to the Zone 2
output unit 8 and the Zone 3 output unit 9 is detected using the DSP 13 connected to the main
output unit 7 to detect the signal level of the audio signal. Therefore, it is not necessary to
provide means for detecting the signal level of the audio signal that is newly output to the Zone 2
output unit 8 and Zone 3 output unit 9.
09-05-2019
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[0047]
In the present embodiment, the main output switch 15 is connected to the Zone 2 output unit 8,
the analog voice input terminal 5 and the main output unit 7, and the analog voice input terminal
connected to the Zone 3 output unit 9. 5 and the main output unit 7 are switched and connected.
In such a case, there is a possibility that the signal level of the audio signal of the Zone 2 output
unit 8 and the Zone 3 output unit 9 may be erroneously detected due to the error of the
switching timing. In the present embodiment, the control unit 23 determines that the sum of the
signal levels of the audio signals output to the main output unit 7, Zone 2 output unit 8, and Zone
3 output unit 9 is less than a predetermined value (S1: Yes). In order to determine whether the
detected signal level is less than a predetermined value, the problem of determining whether the
signal level is less than the predetermined value may occur based on the erroneously detected
signal level. Be suppressed.
[0048]
In the present embodiment, the control unit 23 shifts the AV amplifier 1 to the standby mode
when the signal level of the audio signal of the Zone 2 output unit 8 other than the main output
unit 7 and the Zone 3 output unit 9 is less than a predetermined value. Therefore, the power
consumption of the AV amplifier 1 can be further suppressed, for example, as compared with the
case where only the supply of the power supply voltage to the output unit is shut off.
[0049]
As mentioned above, although embodiment of this invention was described, the form which can
apply this invention is not restricted to the above-mentioned embodiment, As it illustrates below,
it is suitably in the range which does not deviate from the meaning of this invention. It is possible
to make changes.
[0050]
In the embodiment described above, the circuit that supplies the power supply voltage is the
microcomputer 2 and the circuit that supplies the power supply voltage to its peripheral circuits,
09-05-2019
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and the circuit that supplies the power supply voltage to the other components, and the main
output A circuit for supplying a power supply voltage to the unit 7, the Zone 2 output unit 8, and
the Zone 3 output unit 9 is shared.
Not limited to this, the AV amplifier 1 may be capable of individually supplying the power supply
voltage to the main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9.
In the above-described embodiment, the “output unit function is on” state is set to use the
output unit function, and the “output unit function is off” state is the output unit state. The
function is not set to use. Not limited to this, as described above, when the power supply voltage
can be separately supplied to the main output unit 7, the Zone 2 output unit 8, and the Zone 3
output unit 9, the "output unit function is ON" state is an output. The power supply voltage may
be supplied to the unit, and the amplification unit and the volume controller may be operable.
Further, in the “output unit function off” state, the supply of the power supply voltage to the
output unit may be cut off, and the amplification unit and the volume controller may be
inoperable.
[0051]
In this modification, the control unit 23 supplies the power supply voltage to the main output
unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9, or cuts off the supply of the power
supply voltage to output the main output unit 7 and the Zone 2 output. The unit 8 controls the
function of the Zone 3 output unit 9 to be on or off. Therefore, in the present modification, "on or
off the function of the output unit" and "supply of the power supply voltage to the output unit or
cutoff of the supply of the power supply voltage" are synonymous. The processing operation of
the AV amplifier 1 when the functions of the main output unit 7, the Zone 2 output unit 8, and
the Zone 3 output unit 9 are turned off will be described below based on the flowcharts shown in
FIGS. First, the control unit 23 determines whether the total value of the signal levels of the
analog audio signals output to the main output unit 7, the Zone 2 output unit 8, and the Zone 3
output unit 9 detected by the detection unit 22 is less than a predetermined value. It is
determined whether or not it is (S101). When the control unit 23 determines that the total value
of the signal levels of the analog audio signals output to the main output unit 7, the Zone 2
output unit 8, and the Zone 3 output unit 9 is not less than a predetermined value, that is, is
equal to or more than the predetermined value S101: No) The processing of S101 is repeatedly
executed. If the total value of the signal levels of the analog audio signals output to the main
output unit 7, Zone 2 output unit 8, and Zone 3 output unit 9 is equal to or greater than a
predetermined value, the main output unit 7, Zone 2 output unit 8, Zone 3 output unit 9 Since
09-05-2019
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the analog audio signal is output to the main output unit, the main output unit to which the
analog audio signal is output incorrectly when the processing to turn off the functions of the
main output unit 7, Zone 2 output unit 8 and Zone 3 output unit 9 is executed. 7, the Zone 2
output unit 8 and the Zone 3 output unit 9 may be turned off, so no processing is performed.
[0052]
When the control unit 23 determines that the total value of the signal levels of the analog audio
signals output to the main output unit 7, the Zone 2 output unit 8, and the Zone 3 output unit 9
is less than a predetermined value (S101: Yes), the main output It is determined whether the
function of part 7 is on (S102). When the control unit 23 determines that the function of the
main output unit 7 is on (S102: Yes), the control unit 23 determines whether the signal level
detected by the DSP 13 is less than a predetermined value (S103). When it is determined that the
signal level detected by the DSP 13 is not less than the predetermined value, that is, is equal to or
more than the predetermined value (S103: No), the control unit 23 executes the process of S101.
[0053]
If it is determined that the signal level detected by the DSP 13 is less than the predetermined
value (S103: Yes), the control unit 23 determines whether a predetermined time has elapsed
while the signal level is less than the predetermined value. (S104). When it is determined that the
predetermined time has not elapsed while the signal level is less than the predetermined value
(S104: No), the control unit 23 executes the process of S103. Then, the control unit 23
repeatedly executes the processing of S103 and S104 until determining that the predetermined
time has elapsed (S104: Yes) while the signal level is less than the predetermined value. When it
is determined that the predetermined time has elapsed while the signal level is less than the
predetermined value (S104: Yes), the control unit 23 determines that the analog audio signal is
not output to the main output unit 7, and the main output The function of section 7 is turned off
(S105).
[0054]
When the control unit 23 determines that the function of the main output unit 7 is not on, that is,
is off (S102: No), or after executing the processing of S105, the function of the Zone 2 output
09-05-2019
20
unit 8 is on. It is determined whether or not (S106). If the control unit 23 determines that the
function of the Zone 2 output unit 8 is not on, that is, it is off (S106: No), the control unit 23
determines whether the function of the Zone 3 output unit 9 is on (S107). When the control unit
23 determines that the function of the Zone 3 output unit 9 is not on, that is, it is off (S107: No),
all functions of the main output unit 7, Zone 2 output unit 8, and Zone 3 output unit 9 are off.
Because there is, the process ends.
[0055]
If the control unit 23 determines that the function of the Zone 3 output unit 9 is on (S107: Yes),
the function of only the Zone 3 output unit 9 is on. And the main output unit 7 are connected
(S108). Next, the control unit 23 determines whether the signal level detected by the DSP 13 is
less than a predetermined value (S109). When it is determined that the signal level detected by
the DSP 13 is not less than the predetermined value, that is, is equal to or more than the
predetermined value (S109: No), the control unit 23 executes the process of S101. When it is
determined that the signal level detected by the DSP 13 is less than the predetermined value
(S109: Yes), the control unit 23 determines whether a predetermined time has elapsed while the
signal level is less than the predetermined value. (S110). When it is determined that the
predetermined time has not elapsed while the signal level is less than the predetermined value
(S110: No), the control unit 23 executes the process of S109. Then, the control unit 23
repeatedly executes the processing of S109 and S110 until it is determined that the
predetermined time has elapsed (S110: Yes) while the signal level is less than the predetermined
value. When it is determined that the predetermined time has elapsed while the signal level is
less than the predetermined value (S110: Yes), the control unit 23 determines that the analog
audio signal is not output to the Zone 3 output unit 9, and outputs Zone 3 The function of the
unit 9 is turned off (S111), and the process ends.
[0056]
When it is determined that the function of the Zone 2 output unit 8 is on (S106: Yes), the control
unit 23 determines whether the function of the Zone 3 output unit 9 is on (S112). When the
control unit 23 determines that the function of the Zone 3 output unit 9 is not on, that is, it is off
(S112: No), the function of only the Zone 2 output unit 8 is on. The analog audio input terminal 5
connected to the Zone 2 output unit 8 and the main output unit 7 are connected (S113). Next,
the control unit 23 determines whether the signal level detected by the DSP 13 is less than a
predetermined value (S114). When it is determined that the signal level detected by the DSP 13
is not less than the predetermined value, that is, is equal to or more than the predetermined
09-05-2019
21
value (S114: No), the control unit 23 executes the process of S101. When it is determined that
the signal level detected by the DSP 13 is less than the predetermined value (S114: Yes), the
control unit 23 determines whether a predetermined time has elapsed while the signal level is
less than the predetermined value. (S115). When it is determined that the predetermined time
has not elapsed while the signal level is less than the predetermined value (S115: No), the control
unit 23 executes the process of S114. Then, the control unit 23 repeatedly executes the
processing of S114 and S115 until it is determined that the predetermined time has elapsed
while the signal level is less than the predetermined value (S115: Yes). When it is determined
that the predetermined time has elapsed while the signal level is less than the predetermined
value (S115: Yes), the control unit 23 determines that the analog audio signal is not output to the
Zone 2 output unit 8, and outputs Zone 2 The function of the unit 8 is turned off (S116), and the
process ends.
[0057]
If the control unit 23 determines that the function of the Zone 3 output unit 9 is on (S112: Yes),
the functions of both the Zone 2 output unit 8 and the Zone 3 output unit 9 are on. 15, the
analog audio input terminal 5 connected to the Zone 2 output unit 8 and the main output unit 7
are connected (S117). Next, the control unit 23 determines whether the signal level detected by
the DSP 13 is less than a predetermined value (S118). When it is determined that the signal level
detected by the DSP 13 is less than the predetermined value (S118: Yes), the control unit 23
determines whether a predetermined time has elapsed while the signal level is less than the
predetermined value. (S119). When it is determined that the predetermined time has not elapsed
while the signal level is less than the predetermined value (S119: No), the control unit 23
executes the process of S118. Then, the control unit 23 repeatedly executes the processing of
S118 and S119 until it is determined that the predetermined time has elapsed (S119: Yes) while
the signal level is less than the predetermined value. When it is determined that the
predetermined time has elapsed while the signal level is less than the predetermined value (S119:
Yes), the control unit 23 determines that the analog audio signal is not output to the Zone 2
output unit 8, and outputs Zone 2 The function of part 8 is turned off (S120).
[0058]
When the control unit 23 determines that the signal level detected by the DSP 13 is not less than
the predetermined value, that is, is equal to or more than the predetermined value (S118: No), or
after executing the processing of S120, the switch 15 for the main output unit Thus, the analog
audio input terminal 5 connected to the Zone 3 output unit 9 and the main output unit 7 are
09-05-2019
22
connected (S121). Next, the control unit 23 determines whether the signal level detected by the
DSP 13 is less than a predetermined value (S122). When it is determined that the signal level
detected by the DSP 13 is not less than the predetermined value, that is, is equal to or more than
the predetermined value (S122: No), the control unit 23 executes the process of S101. When it is
determined that the signal level detected by the DSP 13 is less than the predetermined value
(S122: Yes), the control unit 23 determines whether a predetermined time has elapsed while the
signal level is less than the predetermined value. (S123). When it is determined that the
predetermined time has not elapsed while the signal level is less than the predetermined value
(S123: No), the control unit 23 executes the process of S122. Then, the control unit 23
repeatedly executes the processing of S122 and S123 until it is determined that the
predetermined time has elapsed while the signal level is less than the predetermined value (S123:
Yes). When it is determined that the predetermined time has elapsed while the signal level is less
than the predetermined value (S123: Yes), the control unit 23 determines that the analog audio
signal is not output to the Zone 3 output unit 9, and outputs Zone 3 The function of the unit 9 is
turned off (S124), and the process ends.
[0059]
As described above, in the present modification, when the function of the main output unit 7 is
off, the function of the Zone 2 output unit 8 is on, and the function of the Zone 3 output unit 9 is
off in the control unit 23, the main output unit The analog voice input terminal 5 connected to
the Zone 2 output unit 8 and the main output unit 7 are connected by the switch 15. At this time,
when the signal level of the audio signal detected by the DSP 13 is less than the predetermined
value, the control unit 23 turns off the function of the Zone 2 output unit 8 (blocks the supply of
the power supply voltage to the Zone 2 output unit 8). . Thus, even when the signal level of the
audio signal of the Zone 2 output unit 8 other than the main output unit 7 is less than the
predetermined value, the power consumption of the AV amplifier 1 can be suppressed. Even
when the function of the main output unit 7 is off, the function of the Zone 2 output unit 8 is off,
and the function of the Zone 3 output unit 9 is on, the function of the Zone 3 output unit 9 is
similarly turned off (to the Zone 3 output unit 9 By interrupting the supply of the power supply
voltage, the power consumption of the AV amplifier 1 can be suppressed.
[0060]
Further, in this modification, the main output switch 15 is connected to the Zone 2 output unit 8,
the analog voice input terminal 5 and the main output unit 7, and the analog voice input terminal
connected to the Zone 3 output unit 9. 5 and the main output unit 7 are switched and connected.
09-05-2019
23
In such a case, the signal level of the audio signal of Zone 2 output unit 8 and Zone 3 output unit
9 is erroneously detected due to the switching timing error, and the function of the output unit
having the signal level equal to or higher May shut off the supply of In the present embodiment,
the control unit 23 determines that the sum of the signal levels of the audio signals output to the
main output unit 7, Zone 2 output unit 8, and Zone 3 output unit 9 is less than a predetermined
value (S1: Yes). Since the functions of the Zone 2 output unit 8 and the Zone 3 output unit 9 are
turned off, the occurrence of the problem that the function of the output unit whose signal level
is equal to or higher than a predetermined value is turned off is suppressed.
[0061]
In the above embodiment, the AV amplifier 1 includes the main output unit 7, the Zone 2 output
unit 8, and the Zone 3 output unit 9. However, the number of output units is not limited to three,
and is four or more. It is also good. Even when the number of output units is four or more, when
the function of the main output unit 7 is off and the function of the other output units is on, the
control unit 23 outputs another output using the main output unit switch 15 The analog audio
input terminal 5 connected to the unit and the main output unit 7 may be switched and
connected to determine whether an analog audio signal is input to the other output unit.
[0062]
In the above embodiment, the main output unit 7 is configured of a volume controller 71 and an
amplification unit 72. Not limited to this, another device for outputting an analog audio signal to
the analog audio output terminal 10a may be included. The same applies to the Zone 2 output
unit 8 and the Zone 3 output unit 9.
[0063]
In the above embodiment, when it is determined that the function of the main output unit 7 is on
and the analog audio signal is not output to the main output unit 7, the function of the main
output unit 7 is turned off. In addition to this, the function of the main output switch 15 may be
turned off. The same applies to the Zone 2 output unit switch 16 and the Zone 3 output unit
switch 17.
09-05-2019
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[0064]
In the above embodiment, the selector 11 and the volume controller 71 of the main output unit 7
are separate circuits. Not limited to this, the selector 11 and the volume controller 71 of the main
output unit 7 may be an integrated circuit.
[0065]
In the above-described embodiment, the DVD player 100 a or the like is exemplified as the
content reproduction apparatus connected to the AV amplifier 1. Not only this but a radio
receiver, a record player, etc. may be sufficient.
[0066]
In the above-mentioned embodiment, the output parts 7-9 connected to the analog audio | voice
output terminal 10 were demonstrated as an output part. Not limited to this, an output unit
connected to a line out output terminal whose output signal level is fixed, an output unit
connected to a pre-out output terminal whose output signal level is variable by a volume
controller, digital audio output An output unit connected to the terminal may be provided.
[0067]
The present invention can be suitably adopted for an audio processing apparatus such as an AV
amplifier.
[0068]
DESCRIPTION OF SYMBOLS 1 AV amplifier (voice processing apparatus) 2 microcomputer 21
reception part 22 detection part (2nd detection part) 23 control part 5 analog voice input
terminal 7 main output part (1st output part) 8 Zone2 output part (2nd output part ) 9 Zone 3
output unit (third output unit) 10 analog voice output terminal 11 selector 12 A / D converter 13
DSP (first detection unit) 15 switch for main output unit (first connection unit) 16 switch for
Zone 2 output unit (first connection unit) Second connection section) 17 Zone 3 output section
switch (third connection section)
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