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JP2012015683

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DESCRIPTION JP2012015683
PROBLEM TO BE SOLVED: To output the same audio signal to a main speaker and ZONE 2
speaker, and to output an audio signal to a main speaker to a ZONE 2 speaker of an audio signal
to be output to the main speaker when performing audio processing on the audio signal Prevent
delays for the voice signal being SOLUTION: An AV amplifier 1 has an audio input terminal, a
first output terminal 9 for a main room, a second output terminal 11 for a ZONE 2 room, and a
selector 2 which selects one audio signal and supplies it to the DSP 6. 3 and a selector 4 which
selects one audio signal and supplies it to the switch unit 16, DSP 6 which performs audio
processing on the audio signal supplied from the selectors 2 and 3 and outputs it to the first
output terminal 9 and the switch unit 16. The switch unit 16 selects one of the audio signal from
the selector 4 and the audio signal from the DSP 6 and outputs the selected signal to the second
output terminal 11, and the control unit 12 controls the selection state of the switch unit 16.
[Selected figure] Figure 1
Voice processing apparatus and program thereof
[0001]
The present invention relates to a first output terminal for outputting an audio signal to a first
speaker disposed in a first room, and an audio signal for outputting a second speaker disposed in
a second room. The present invention relates to a voice processing device including a second
output terminal.
[0002]
09-05-2019
1
FIG. 3 is a block diagram showing the configuration of a conventional AV amplifier 101. As
shown in FIG.
The AV amplifier 101 is connected to a plurality of BD (Blu-ray Disc) players 20A and 20B, digital
audio signals are input from the BD players 20A and 20B to the digital audio input terminals IN1
and IN2, and analog audio signals are input to an analog audio input terminal IN3. , IN4. The AV
amplifier 101, the BD players 20A and 20B, and the main speaker 30 are disposed in the main
room, and the ZONE 2 speaker 40 is disposed in the ZONE 2 room.
[0003]
First, an audio signal to be output to the main speaker 30 will be described. The digital audio
selector 2 selects one digital audio signal from digital audio signals supplied from the BD players
20A and 20B, and supplies the digital audio signal to the DSP 6. The analog audio selector 3
selects one analog audio signal from analog audio signals supplied from the BD players 20A and
20B, and supplies the selected analog audio signal to the A / D converter 5. The A / D converter
5 converts an analog voice signal into a digital voice signal and supplies the digital voice signal to
the DSP 6. In practice, only the digital audio signal from either the digital audio selector 2 or the
analog audio selector 3 is supplied to the DSP 6. The DSP 6 performs audio processing on the
supplied digital audio signal and supplies it to the D / A converter 7. The D / A converter 7
converts the supplied digital audio signal into an analog audio signal and supplies the analog
audio signal to the amplifier 8. The amplification unit 8 amplifies the supplied audio signal, and
outputs the audio signal to the main speaker 30 via the speaker output terminal 9 for the main
speaker.
[0004]
Next, an audio signal output to the ZONE 2 speaker 40 will be described. The analog audio
selector 4 selects one analog audio signal from analog audio signals supplied from the BD players
20A and 20B, and supplies the selected analog audio signal to the amplification unit 10. The
amplification unit 10 amplifies the supplied audio signal, and outputs the audio signal to the
ZONE2 speaker 40 through the speaker output terminal 11 for the ZONE2 speaker. Therefore,
only the analog audio signal from the analog audio selector 4 can be output to the ZONE 2
speaker 40.
09-05-2019
2
[0005]
Here, the main room is, for example, a living room, and the ZONE 2 room is a room adjacent to
the living room (eg, a children's room, a kitchen, etc.), the door between these rooms is opened,
and the main room and the ZONE 2 room are We have a party as one big room. At this time, it is
assumed that the same audio signal from the BD player 20A or 20B is output as BGM to the main
speaker arranged in the main room and the ZONE 2 speaker arranged in the ZONE 2 room.
However, as described above, the audio signal output to the main speaker 30 is subjected to
audio processing by the DSP 6 and the audio signal output to the ZONE 2 speaker 40 is output to
the main speaker 30 because the audio processing is not executed by the DSP. The audio signal is
delayed with respect to the audio signal output to the ZONE 2 speaker 40 by the audio
processing time in DPS 6. As a result, the audio signal output from the main speaker 30 and the
audio signal output from the ZONE 2 speaker 40 are not output at the same time, and there is a
problem that the listener feels uncomfortable when performing a party.
[0006]
In order to solve this problem, the analog voice signal supplied from the analog voice selector 3
is directly supplied to the amplification unit 8 without passing through the A / D converter 5, the
DSP 6 and the D / A converter 7, and the main speaker There is a way to output to 30. However,
in this case, surround sound signals (for example, the center sound signal C, the surround left
sound signal SL, the surround right sound signal SR, and the like) from the analog sound signals
of the front left sound signal FL and the front right sound signal FR. Since the subwoofer audio
signal SW can not be generated, audio can not be output from the speakers of these channels
among the main speakers 30. Further, the audio input to the main speaker 30 needs to be limited
to an analog audio signal, and a digital audio signal can not be input.
[0007]
Japanese Patent Application Laid-Open No. 2004-56418
[0008]
The present invention has been made to solve the above-described conventional problems, and
its object is to provide the same audio signal to a first speaker disposed in a first room and a
second speaker disposed in a second room. When performing audio processing on the audio
signal output and output to the first speaker, the audio signal output to the first speaker may be
delayed with respect to the audio signal output to the second speaker It is providing the audio
09-05-2019
3
processing apparatus which prevents.
[0009]
An audio processing apparatus according to a preferred embodiment of the present invention
includes a plurality of audio input terminals, a first output terminal for outputting an audio signal
to a first speaker disposed in a first room, and a second output terminal disposed in a second
room A second output terminal for outputting an audio signal to the second speaker to be
selected, and one audio signal selected from the audio signals input to the plurality of audio input
terminals and supplied to an audio processing unit A first selection unit, a second selection unit
that selects one audio signal from among audio signals input to the plurality of audio input
terminals, and supplies the audio signal to a third selection unit; The audio processing unit
performs audio processing on the generated audio signal and outputs the audio signal to the first
output terminal and the third selection unit, and one of an audio signal from the second selection
unit or an audio signal from the audio processing unit Select the second output terminal
Comprising a third selection unit for outputting, and a control unit for controlling the selection
state of the third selection unit.
[0010]
The third selection unit selects an audio signal from the audio processing unit in accordance with
an instruction from the control unit, and outputs the audio signal to the first speaker by
outputting the audio signal to the second output terminal; The audio signal to be output to is the
same audio signal, and the same audio processing is performed by the same audio processing
unit.
Therefore, even when the same sound is reproduced from the first speaker and the second
speaker in the first room and the second room, an audio signal output to the first speaker is
output to the second speaker Delay is prevented from occurring.
Further, the third selection unit selects an audio signal from the second selection unit in response
to an instruction from the control unit, and outputs the audio signal to the second speaker by
outputting the audio signal to the second output terminal, It can be different from the audio
signal output to the first speaker.
[0011]
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4
In a preferred embodiment, the apparatus further comprises mode selection means for selecting
one listening mode from a plurality of listening modes including the first mode in accordance
with a user operation, and the control unit is configured to select the first mode as a listening
mode. When it is selected, the third selection unit is made to select the audio signal from the
audio processing unit, and when a mode other than the first mode is selected as the listening
mode, the second selection unit is selected to be the second selection unit. The audio signal from
the selection unit is selected.
[0012]
When the first mode is selected as the listening mode, the third selection unit selects the audio
signal from the audio processing unit according to the instruction from the control unit, and
outputs the selected audio signal to the second output terminal. The audio signal output to one
speaker and the audio signal output to the second speaker become the same audio signal, and
the same audio processing is performed by the same audio processing unit.
Therefore, the audio signal output to the first speaker is prevented from being delayed with
respect to the audio signal output to the second speaker.
When a mode other than the first mode is selected as the listening mode, the third selection unit
selects the audio signal from the second selection unit according to an instruction from the
control unit, and selects the second output terminal. By outputting, the audio signal output to the
second speaker can be made different from the audio signal output to the first speaker.
[0013]
In a preferred embodiment, the apparatus further comprises setting means for setting whether or
not the audio signal for the second speaker is the same as the audio signal for the first speaker in
accordance with a user operation, the control unit When the setting means sets the audio signal
for the second speaker to be the same audio signal as the audio signal for the first speaker, and
the first mode is selected as the listening mode, the third selection unit Or the setting means
selects the audio signal from the audio processing unit and the setting means does not set the
audio signal for the second speaker to be the same as the audio signal for the first speaker, or
The audio signal for the second speaker is the same as the audio signal for the first speaker
Although set, when the mode other than the first mode is selected as the listening mode, to select
the audio signal from the second selecting unit to the third selection portion.
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[0014]
An audio processing apparatus according to another preferred embodiment of the present
invention is for outputting audio signals to a plurality of digital audio input terminals, a plurality
of analog audio input terminals, and a first speaker disposed in a first room. Audio input to the
first output terminal, the second output terminal for outputting an audio signal to the second
speaker disposed in the second room, and the plurality of digital audio input terminals and the
analog audio input terminal A first selection unit which selects one audio signal from the signals
and supplies it to the audio processing unit, and selects one audio signal from audio signals input
to the plurality of analog audio input terminals; A second selection unit for supplying to a
selection unit, the audio processing unit that performs audio processing on the audio signal
supplied from the first selection unit, and outputs the audio signal to the first output terminal
and the third selection unit; Second A third selection unit that selects one of an audio signal from
a selection unit and an audio signal from the audio processing unit and outputs the selected
signal to the second output terminal; and a control unit that controls a selection state of the third
selection unit Equipped with
[0015]
The operation program of any one of the voice processing devices according to another preferred
embodiment of the present invention determines whether the first mode is selected as the
listening mode, and the first mode is selected as the listening mode. If it is determined that the
third selection unit selects an audio signal from the audio processing unit, and if it is determined
that a mode other than the first mode is selected as the listening mode, Allowing the computer to
execute the step of causing the third selection unit to select the audio signal from the second
selection unit.
[0016]
When the same audio signal is output to the first speaker disposed in the first room and the
second speaker disposed in the second room, and audio processing is performed on the audio
signal output to the first speaker The audio signal output to the first speaker can be prevented
from being delayed with respect to the audio signal output to the second speaker.
[0017]
FIG. 1 is a block diagram showing a configuration of an AV amplifier 1 according to a preferred
embodiment of the present invention.
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6
5 is a flowchart showing processing of a control unit 12 of the AV amplifier 1;
FIG. 10 is a block diagram showing a configuration of a conventional AV amplifier 101.
[0018]
Hereinafter, an AV amplifier (voice processing apparatus) according to preferred embodiments of
the present invention will be specifically described with reference to the drawings, but the
present invention is not limited to these embodiments.
FIG. 1 is a schematic block diagram showing an AV amplifier 1.
In the AV amplifier 1, BD players (content reproduction devices) 20 A and 20 B are connected to
digital audio input terminals IN 1 and IN 2, analog audio input terminals IN 3 and IN 4, and a
main speaker (first speaker) 30 to a speaker output terminal 9 The ZONE 2 speaker (second
speaker) 40 is connected to the speaker output terminal 11. The AV amplifier 1, the BD players
20A and 20B, and the main speaker 30 are disposed in the main room (first room), and the ZONE
2 speaker 40 is disposed in the ZONE 2 room (second room). The main room and the ZONE 2
room can be closed between the rooms by closing the door between these rooms, and can be
opened between the rooms by opening the door.
[0019]
Although not particularly limited, the main speaker is 5.1 channel (for example, 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) Includes speakers for minutes or 7.1
channels. The ZONE 2 speaker includes speakers for two channels (eg, front left audio signal FL,
front right audio signal FR).
[0020]
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7
The AV amplifier 1 is provided with a plurality of listening modes, and the DSP 6 executes
predetermined audio processing on the digital audio signal according to one listening mode
selected by the user operation. In this example, the listening mode is provided with a mode called
party mode (first mode). The party mode is a mode suitable for opening each room by opening
the door between the main room and the ZONE 2 room, and reproducing the same audio signal
from the main speaker 30 and the ZONE 2 speaker 40. In the party mode, an audio signal output
to the main speaker 30 is output to the ZONE 2 speaker 40 by outputting an audio signal
subjected to audio processing by the DSP 6 to the ZONE 2 speaker 40 as in the main speaker 30.
Prevent delays from occurring.
[0021]
The AV amplifier 1 includes digital audio input terminals IN1 and IN2, analog audio input
terminals IN3 and IN4, digital audio selector 2, analog audio selectors 3 and 4, A / D converter 5,
DSP 6 and D / A. The converter 7, the amplifier 8, the speaker output terminal 9 for the main
speaker 30, the amplifier 10, the speaker output 11 for the ZONE 2 speaker 40, the controller
12, the memory 13, and the display 14. An operation unit 15 and a switch unit 16 are
schematically provided.
[0022]
The digital audio output terminal of the BD player 20A is connected to the digital audio input
terminal IN1, and a digital audio signal is input from the BD player 20A.
The digital audio output terminal of the BD player 20B is connected to the digital audio input
terminal IN2, and a digital audio signal is input from the BD player 20B. The analog audio output
terminal of the BD player 20A is connected to the analog audio input terminal IN3, and an analog
audio signal is input from the BD player 20A. The analog audio output terminal of the BD player
20B is connected to the analog audio input terminal IN4, and an analog audio signal is input
from the BD player 20B.
[0023]
The digital audio selector 2 selects one digital audio signal from among the digital audio signal
input to the digital audio input terminal IN1 and the digital audio signal input to the digital audio
input terminal IN2 according to the user operation. To the DSP (voice processing unit) 6.
09-05-2019
8
[0024]
The analog voice selector 3 selects one analog voice signal from the analog voice signal input to
the analog voice input terminal IN3 and the analog voice signal input to the analog voice input
terminal IN4 according to the user operation. Supply to the A / D converter 5.
The A / D converter 5 AD converts an analog audio signal supplied from the analog audio
selector 3 into a digital audio signal, and supplies the digital audio signal to the DSP 6.
[0025]
In practice, the digital audio signal supplied from the digital audio selector 2 and the digital audio
signal supplied from the analog audio selector 3 via the A / D converter 5 are selected according
to the user's operation. Only one digital audio signal is supplied to the DSP 6.
[0026]
The DSP 6 executes predetermined audio processing on the digital audio signal supplied from the
digital audio selector 2 or the A / D converter 5 in accordance with the listening mode selected
by the user operation, and the D / A converter Supply to 7.
The predetermined audio processing includes, for example, a surround audio signal (for example,
central audio signal C, surround left, etc.) from delay processing, equalizer processing,
reverberation processing, or 2ch audio signals of front left audio signal FL and front right audio
signal FR. The audio signal SL, the surround right audio signal SR, the subwoofer audio signal
SW, and the like are generated.
[0027]
The D / A converter 7 converts the digital audio signal supplied from the DSP 6 into an analog
audio signal, and supplies the analog audio signal to the amplifier unit 8. The amplification unit 8
amplifies the audio signal supplied from the D / A converter 7 and outputs the amplified audio
signal to the main speaker 30 through the speaker output terminal 9. The D / A converter 7, the
amplifier 8, and the speaker output terminal 9 are for a plurality of channels (for example, the
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9
front left audio signal FL, the front right audio signal FR, the center audio signal C, the surround
left audio signal SL, the surround right audio Signal SR and for the subwoofer audio signal SW).
Further, the D / A converter 7 supplies the switch unit 16 with the front left audio signal FL and
the front right audio signal FR among the audio signals of the plurality of channels.
[0028]
The analog audio selector 4 selects one analog audio signal (forward from the analog audio
signal input to the analog audio input terminal IN3 and the analog audio signal input to the
analog audio input terminal IN4 according to user operation). The left audio signal FL and the
front right audio signal FR) are selected and supplied to the switch unit 16.
[0029]
Among the analog audio signal supplied from the analog audio selector 4 and the analog audio
signal supplied from the D / A converter 7, the switch unit 16 selects one analog audio signal (an
The front left audio signal FL and the front right audio signal FR) are selected and supplied to the
amplification unit 10.
[0030]
The amplification unit 10 amplifies the audio signal supplied from the switch unit 16, and
outputs the audio signal to the ZONE 2 speaker 40 via the speaker output terminal 11.
The amplification unit 10 and the speaker output terminal 11 are typically provided for the front
left audio signal FL and the front right audio signal FR, and amplify the audio signal of each
channel to The audio signal is output to the ZONE 2 speaker 40 for
[0031]
The control unit 12 controls each unit of the AV amplifier 1 based on an operation program of
the AV amplifier 1 stored in a memory (ROM, RAM, flash memory or the like), and is a
microcomputer, a CPU or the like.
The display unit 14 displays the operation state (volume value, selector, listening mode) of the
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10
AV amplifier 1 and the like, and is an LCD, an FL tube, or the like. The operation unit 15 is for
inputting a user operation, and is an operation button, a remote control transceiver, or the like.
[0032]
The control unit 12 outputs an audio signal (referred to as a main selector) output to the main
speaker 30 and an audio signal output to the ZONE 2 speaker 40 (referred to as a ZONE 2
selector) in accordance with a user operation. Select) individually. That is, the audio signal output
to the main speaker 30 and the audio signal output to the ZONE 2 speaker 40 can be made
different. For example, an audio signal based on a digital audio signal or an analog audio signal
supplied from the BD player 20A is output to the main speaker 30, and an audio signal based on
an analog audio signal supplied from the BD player 20B to the ZONE 2 speaker 40 Can be
output.
[0033]
The control unit 12 can also select “SOURCE” as the ZONE 2 selector in accordance with the
user operation. SOURCE means that the audio signal output to the ZONE speaker 40 is the same
as the audio signal output to the main speaker 30. That is, SOURCE means that an audio signal
from the same BD player 20 as the BD player 20 selected by the main selector is also output to
the ZONE 2 speaker 40. For example, when the BD player 20A digital audio signal or analog
audio signal is selected as the main selector and the audio signal based on the digital audio signal
or analog audio signal supplied from the BD player 20A is output to the main speaker 30, the
ZONE 2 speaker 40 also outputs an audio signal based on the analog audio signal supplied from
the BD player 20A.
[0034]
The control unit 12 controls the DSP 6 so as to select one listening mode from a plurality of
listening modes according to the user operation, and to execute voice processing according to the
selected listening mode.
[0035]
The control unit 12 controls the selection state of the switch unit 16.
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Specifically, when a mode other than the party mode is selected as the listening mode, or when a
mode other than SOURCE is selected as the ZONE 2 selector, the control unit 12 supplies the
analog voice selector 4 with the analog voice selector 4. Select a signal. Thus, regardless of the
audio signal output to the main speaker 30, the audio signal selected by the user operation
among the analog audio signals supplied from the BD players 20A and 20B can be output to the
ZONE 2 speaker 40. it can.
[0036]
On the other hand, when the party mode is selected as the listening mode and SOURCE is
selected as the ZONE 2 selector, the control unit 12 causes the switch unit 16 to select the analog
audio signal from the D / A converter 7. As a result, an audio signal identical to the audio signal
output to the main speaker 30 is output to the ZONE 2 speaker 40. Further, the audio processing
of the audio signal output to the main speaker 30 is performed by the DSP 6, and the audio
processing of the same audio signal output to the ZONE 2 speaker 40 is also performed by the
same DSP 6. Therefore, it is possible to prevent the audio signal output to the main speaker 30
from being delayed with respect to the audio signal output to the ZONE 2 speaker 40.
[0037]
Hereinafter, the operation of the AV amplifier 1 of the present invention will be described. FIG. 2
is a flowchart showing the process of the control unit 12. The control unit 12 determines
whether SOURCE is selected as the ZONE 2 selector (S1). That is, it is determined whether the
ZONE 2 speaker 40 is set to output the audio signal from the BD player 20 same as the main
speaker 30 or not.
[0038]
When SOURCE is not selected as the ZONE 2 selector (NO in S1), for example, when the analog
audio signal of the BD player 20B is selected, the control unit 12 causes the switch unit 16 to
output the audio output from the analog audio selector 4 A signal is selected (S2). Accordingly,
analog audio signals (front left audio signal FL, front right audio signal FR) from the BD player
20B are supplied to the amplifier 10 through the analog audio input terminal IN4, the analog
09-05-2019
12
audio selector 4 and the switch section 16. Ru. The amplification unit 10 amplifies the supplied
audio signal and outputs the amplified audio signal to the ZONE 2 speaker 40 through the
speaker output terminal 11.
[0039]
At this time, when the digital audio signal of the BD player 20A is selected as the main selector,
the digital audio signal from the BD player 20A is the digital audio input terminal IN1, the digital
audio selector 2, the DSP 6, and the D / A. The signal is supplied to the amplification unit 8 via
the converter 7. The amplification unit 8 amplifies the supplied audio signal and outputs the
amplified audio signal to the main speaker 30 through the speaker output terminal 9. Thus,
audio signals from different BD players 20 are output to the main speaker 30 and the ZONE 2
speaker 40.
[0040]
In S1, when SOURCE is selected as the ZONE 2 selector (YES in S1), the control unit 12
determines whether the party mode is selected as the listening mode (S3).
[0041]
When a mode other than the party mode is selected (NO in S3), the control unit 12 causes the
switch unit 16 to select the audio signal output from the analog audio selector 4 (S2).
Therefore, for example, when the digital audio signal or analog audio signal of the BD player 20A
is selected as the main selector, the analog audio signals (front left audio signal FL, front right
audio signal FR) from the BD player 20A are analog audio The signal is supplied to the
amplification unit 10 through the input terminal IN 3, the analog voice selector 4, and the switch
unit 16. The amplification unit 10 amplifies the supplied audio signal and outputs the amplified
audio signal to the ZONE 2 speaker 40 through the speaker output terminal 11.
[0042]
At this time, for the main speaker 30, the digital audio signal from the BD player 20A is sent to
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the amplifier 8 through the digital audio input terminal IN1, the digital audio selector 2, the DSP
6, and the D / A converter 7. Supplied. The amplification unit 8 amplifies the supplied audio
signal and outputs the amplified audio signal to the main speaker 30 through the speaker output
terminal 9. Alternatively, for the main speaker 30, the analog audio signal from the BD player
20A is amplified through the analog audio input terminal IN3, the analog audio selector 3, the A
/ D converter 5, the DSP 6, and the D / A converter 7. It is supplied to the part 8. The
amplification unit 8 amplifies the supplied audio signal and outputs the amplified audio signal to
the main speaker 30 through the speaker output terminal 9. Thus, although the same audio
signal from the same BD player 20A is output to the main speaker 30 and the ZONE 2 speaker
40, an audio signal subjected to audio processing by the DSP 6 is output to the main speaker 30.
An audio signal not subjected to audio processing by the DSP 6 is output to the ZONE 2 speaker
40.
[0043]
If the party mode is selected in S3 (YES in S3), the control unit 12 causes the switch unit 16 to
select the audio signal supplied from the D / A converter 7 (S4). Therefore, for example, when the
digital audio signal of the BD player 20A is selected as the main selector, the digital audio signal
from the BD player 20A is transmitted to the D / A converter through the digital audio input
terminal IN1, the digital audio selector 2, and the DSP 6. Supplied to 7. Among the analog audio
signals of the plurality of channels subjected to DA conversion in the D / A converter 7, the front
left audio signal FL and the front right audio signal FR are supplied to the amplification unit 10
via the switch unit 16. The amplification unit 10 amplifies the supplied audio signal and outputs
the amplified audio signal to the ZONE 2 speaker 40 through the speaker output terminal 11.
[0044]
At this time, for the main speaker 30, the digital audio signal from the BD player 20A is sent to
the amplifier 8 through the digital audio input terminal IN1, the digital audio selector 2, the DSP
6, and the D / A converter 7. Supplied. The amplification unit 8 amplifies the supplied audio
signal and outputs the amplified audio signal to the main speaker 30 through the speaker output
terminal 9. Thus, the same audio signal from the same BD player 20A is output to the main
speaker 30 and the ZONE2 speaker 40, and the audio processing is performed on the audio
signal output to the main speaker 30 by the DSP 6 The audio processing is also performed by the
DSP 6 on the audio signal output to the ZONE 2 speaker 40. Therefore, the audio signal output to
the main speaker 30 can be prevented from being delayed with respect to the audio signal
output to the ZONE 2 speaker 40.
09-05-2019
14
[0045]
Although the preferred embodiments of the present invention have been described above, the
present invention is not limited to these embodiments. For example, the AV amplifier 1 is
provided with a pre-out output terminal for the main room and / or for ZONE 2, and an analog
audio signal before amplification by the amplification unit 8 and the amplification unit 9 may be
output from the pre-out output terminal. In this case, an amplification unit is separately
connected to the front stage of the main speaker 30 and / or the ZONE 2 speaker 40, or a
speaker with a built-in amplification unit is used as the main speaker 30 and / or the ZONE 2
speaker 40. Further, in FIG. 2, the process of S1 may be omitted, and the process may proceed to
S4 if the listening mode is simply the party mode, and may proceed to S2 otherwise. The digital
audio input terminals IN1 and IN2 may be an HDMI input terminal for receiving HDMI data
including video data and audio data, or an input terminal of another standard. Also, instead of the
BD player, another content reproduction apparatus such as a DVD player, a CD player, a game
machine or the like may be applied. The program may also be provided in the form of a program
for causing a computer to execute the processing of the control unit 12 of the AV amplifier 1 and
a recording medium recording the program.
[0046]
The present invention can be suitably adopted for an AV amplifier.
[0047]
DESCRIPTION OF SYMBOLS 1 AV amplifier 2 digital audio | voice selector 3 analog audio | voice
selector 4 analog audio | voice selector 5 A / D converter 6 DSP 7 D / A converter 8 amplifier
part 9 speaker output terminal (for main) 10 amplifier part 11 speaker output terminal (for
ZONE2) 12 Control section 13 Memory 14 Display section 15 Operation section 16 Switch
section 20A BD player 20B BD player 30 Main speaker 40 ZONE2 speaker IN1 Digital audio
input terminal IN2 Digital audio input terminal IN3 Analog audio input terminal IN4 Analog
audio input terminal
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