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DESCRIPTION JPH05251950

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DESCRIPTION JPH05251950
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
mixer system, and more particularly to a mixer system in which the parameters of the mixer can
be set from a control console installed separately.
[0002]
The mixer system changes the amplitude, frequency characteristics, left / right balance, etc. of
the signals coming from multiple channels independently, mixes the signals from these channels,
and outputs them as L and R 2 channel stereo signals It is. In recent years, a compact mixer
system has been developed by converting the electronic circuit into an IC or the like, and has
been used for personal use as well as for business use.
[0003]
2. Description of the Related Art FIG. 4 is a conceptual view of a conventional mixer system. The
mixer body 10 and the control console 20 are connected by a cable 1. The mixer body 10
transmits / receives signals according to the MIDI system to / from the control unit 11 which
performs overall control, the operation unit 12 which changes set values such as volume,
equalizer, fader, and pan (PAN) in each channel, and the control console 20. It comprises an
interface unit (INT) 13 to perform.
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[0004]
The control console 20 notifies the mixer main body side via the cable 1 of the parameter values
set by the operation unit 21 and the operation unit 21 for changing set values of volume,
equalizer, fader, pan (PAN), etc. for each channel. It comprises an interface unit 22 of the MIDI
method.
[0005]
The parameter setting switches provided on the mixer main body 10 and the operation units 12
and 21 on the control console 20 side have an appearance as shown in FIG.
(a)はボリュームスイッチ、(b)はイコライザスイッチである。 In contrast to the volume
switch which is vertically slidable, the equalizer switch is turned by a knob and has an outer
shape which makes it easy to set each parameter.
[0006]
In the system configured as described above, when the operator changes, for example, the setting
of the volume switch of the specific channel from the operation unit 21 of the control console 20,
the setting value is sent from the interface unit 22 to the mixer main body 10 via the cable 1. Be
When receiving the setting signal, the control unit 11 on the mixer body side sends a signal to
the operation unit 12 to change the volume setting value of a specific channel. Parameters
include not only volume but also equalizer, pan (PAN), etc. Changes in these parameter setting
values can also be notified from the cable 1 to the mixer main body side, and the control unit 11
operates the operation unit according to the notified content Change the corresponding
parameter settings of 12. The parameter can also be changed from the operation unit 12
provided on the mixer body 10 side.
[0007]
FIG. 6 is a block diagram showing a conventional configuration example of the mixer main body.
In the illustrated embodiment, the input (INPUT) has eight channels from 1 to 8. The inputs also
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include an auxiliary return input 1 (AUX RTN1) and an auxiliary return input 2 (AUXRTN2), and
a bus input (BUS IN) is also provided. Each of these inputs is also eight channels. The auxiliary
return input is an input for receiving the mixer body output as a feedback input and editing the
sound. The bus input is an input for putting a sound that has already been edited directly into the
analog bus. Each of these input units is a jack input.
[0008]
First, the operation of the normal input unit will be described. The input from each channel first
enters the input amplitude adjustment unit 40, where the amplitude adjustment is performed.
The sound sources input from each channel are various, for example, from relatively strong
sounds such as a piano to relatively weak sounds such as a piccolo. The input amplitude
adjusting unit 40 adjusts the sounds having different amplitudes to substantially the same level
at the inlet of the mixer. The symbol with the arrow in the circle in the figure indicates the
adjustment knob (same below).
[0009]
The signal of each channel whose amplitude has been adjusted by the input amplitude
adjustment unit 40 enters the equalizer (EQ) 41. The equalizer 41 changes the frequency
characteristic of the signal, and can be adjusted independently on the low band side and the high
band side. For example, in order to emphasize only the low frequency side, the low frequency
side adjustment knob may be set to the maximum value to increase the low frequency side gain.
[0010]
The output of the equalizer 41 enters the fader adjustment unit 42. The fader is used to make the
sound louder (fade in) or smaller (fade out). The output of the fader adjustment unit 42 enters
the mute unit 43. The muting unit 43 is for canceling the sound, and the switch is turned off at
the time of muting. The output of the mute unit 43 enters the PAN balance unit 44. The PAN
balance unit 44 adjusts the balance of the left and right sounds when creating a stereo signal.
[0011]
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The output of the PAN balance unit 44 is connected to the analog bus 47 via the volume 45 and
the switch 46. The analog bus 47 is composed of six lines: STEREOL, STEREOR, AUX1L, AUX1R,
AUX2L, and AUX2R. The switch 46 is for distributing and giving the output of the PAN balance
unit 44 to L and R of the analog bus 47.
[0012]
On the other hand, the output of the PAN balance unit 44 passes through the amplifier 48 and
enters the stereo master unit 49, and the volume adjustment is performed. The output of the
stereo master unit 49 is output as left and right (L, R) stereo out signals through an amplifier 50.
This output is connected to the jack. From the analog bus 47, the auxiliary 1 signal (AUX SEND 1)
is output from a terminal (jack) through an amplifier 48, an auxiliary 1 master unit 51, and an
amplifier 50. Similarly, from the analog bus 47, the auxiliary 2 signal (AUX SEND 2) is output
from the terminal through the amplifier 48, the auxiliary 2 master unit 52, and the amplifier 50.
These auxiliary 1 and auxiliary 2 signals are connected to an external device (not shown) and are
input to the auxiliary return input 1 or auxiliary return input 2 after being echoed, for example.
[0013]
The stereo output is connected to an earphone terminal (jack) through a volume control unit 53
and an amplifier 54. This earphone terminal becomes the PH0NE output. Reference numerals 55
and 56 denote display units for displaying bar-graphs of L and R levels of stereo output. The
operator can know the output level from the display units 55 and 56.
[0014]
Next, the operation of the auxiliary return inputs AUX RTN1 and AUX RTN2 will be described.
First, the operation of the auxiliary return input 1 will be described. The auxiliary 1 or auxiliary 2
outputs enter these auxiliary return inputs 1 or 2. The signal input from the terminal (jack)
directly enters the equalizer 41. The output of the equalizer 41 enters the amplifier 57 via the
fader unit 42 and is connected to the analog bus 47. The above configuration is the same for the
auxiliary return input 2 as well.
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[0015]
Next, the bus input unit (BUS IN) 58 comprises six signal inputs of L and R of stereo signals, L
and R of auxiliary 1 input and L and R of auxiliary 2 inputs. These inputs are directly connected
to the analog bus 47, and an acoustic signal for which the mixing process is completed is input
from an external device or the like. In the system described above, the adjustment of the input
amplitude adjustment unit 40, the equalizer (EQ) 41, the fader unit 42, the PAN balance unit 44,
the stereo master unit 49, etc. can mainly be performed from the control console 20.
[0016]
In the above-described conventional system, when the knob of each parameter is adjusted
independently of the operation of the control console 20 on the mixer main body side, each
parameter setting which is set by the control console 20 as it is There arises a problem that the
setting value of the switch does not match the setting value of the mixer body 10. In this case,
even though the parameter setting value is changed on the mixer body 10 side, the operator on
the control console 20 side further adjusts the parameter setting switch without knowing that,
and the parameter setting value is optimal. There was a problem that it deviated from the point.
[0017]
Therefore, in order to eliminate such problems, each parameter setting switch on the control
console 20 side is a motor drive type volume, and when the parameter setting value is changed
on the mixer body 10 side, the change information is via the cable 1 A method of notifying the
control console 20 side, driving the parameter setting switch of the control console 20 by a
motor, and combining with the setting value of the parameter switch on the mixer main body
side is used.
[0018]
However, in this method, it is necessary to use an expensive motor drive type volume as each
parameter setting switch, and in a device having many parameters such as a mixer, it leads to a
significant cost increase and the price of the entire device becomes high. It will
In addition, when such a motor drive type volume is used, there is a problem that the space is
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taken up and the device is enlarged.
[0019]
The present invention has been made in view of such problems, and there is no inconsistency
between the parameter setting value on the mixer main body side and the parameter setting
value on the control console side, and the apparatus is upsized. The purpose is to provide a mixer
system without
[0020]
The present invention for solving the above problems is a system in which a mixer main body
and a control console are connected by signal lines, and various parameter settings of the mixer
main body can also be performed from the control console. When parameters are read out from
the scene memory in the mixer body and setting values of the parameters of the mixer body are
changed, or setting values of the parameters are changed independently of the control console
from the operation unit of the mixer body. When it is received, the parameter set value is notified
to the control console via a signal line, and the control console side performs level comparison
between the set value on the panel and the parameter set value from the mixer body side, and
the comparison result is Accordingly, the lighting state of the lamp provided for each parameter
of each channel is changed.
[0021]
In general, the parameters of each channel on the mixer body side from the control console are
set.
However, the setting value of each parameter may be changed by any method on the mixer body
side.
At such time, the parameter set value is notified to the control console via the signal line, and the
control console side performs level comparison between the set value on the panel and the
parameter set value from the mixer main body side, and the comparison result The lighting state
of the lamp provided for each parameter of each channel is changed accordingly. For example,
the lamp indicates a certain lighting state when the parameter set value on the mixer main body
side and the parameter set value on the control console side do not match.
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[0022]
Therefore, the operator turns the knob of the parameter setting switch on the control console to
turn off the lamp (predetermined as off when the parameter setting on the mixer side and the
parameter setting on the control console match. If). In this manner, according to the present
invention, it is known that the parameter setting value on the control console side and the
parameter setting value on the mixer main body do not match depending on the lighting state of
the lamp attached to the parameter setting switch provided on the control console side. As a
result, the parameter set value on the mixer body side and the parameter set value on the control
console side will not be mismatched. Furthermore, according to the present invention, since it is
not necessary to use a motor drive type volume, the apparatus does not increase in size.
[0023]
Embodiments of the present invention will be described in detail below with reference to the
drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. The same
components as those in FIG. 4 are denoted by the same reference numerals. On the mixer body
10 side, 11 is a control unit, 12 is an operation unit, and 13 is an interface unit. A scene memory
14 stores parameter setting values for each channel in each scene of the sound field. For
example, about 100 scenes are used as the number of scenes. The scene change can be
performed by a command input from the operation unit 12 or by a command input from the
control console 20.
[0024]
Then, the output from the scene memory 14 is given to the operation unit 12, and each
parameter of each channel is set to the value read from the scene memory 14. At the same time,
when each parameter for each channel is changed by the output of the scene memory 14, it is
notified to the control console 20 side by the command from the control unit 11 via the interface
unit 13 and the cable 1 as a signal line. It has become.
[0025]
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On the control console 20 side, 23 receives each parameter set value of each channel sent
through the interface unit 22, and these set values and the operation unit 21 (not shown) on the
control console 10 side. It is a level comparison control unit that compares each parameter of
each channel set in the panel of FIG. 4) with each other. Then, the level comparison control unit
23 outputs a control signal according to the comparison result. Reference numeral 24 denotes a
voltage controlled oscillator (VCO) that receives a control signal according to the comparison
result from the level comparison control unit 23 and generates a pulse according to the control
signal.
[0026]
D1 and D2 are lamps indicating lighting states according to the differences between the
parameter setting values of the mixer main body 10 side and the control console 20 side
compared with the level comparison control unit 23, and here, LEDs (light emitting diodes) are
used There is. Further, D1 represents, for example, green (GREEN), and D2 represents, for
example, red (RED) emission.
[0027]
LED light emitting elements can be used as these light emitting diodes D1 and D2, and these light
emitting elements can be contained in one package. With such a configuration, it is possible to
make it look as if one LED is lit and reducing the number of circuit components. These D1 and
D2 indicate light emission states as shown below according to the difference between the set
values of the parameters. When the parameter setting value on the first light emission state
mixer main body 10 side is the same as the setting value on the control console 20 side, both D1
and D2 are turned off or on (the lighting state includes the blinking state) Take. When the
parameter setting value on the second light emission state mixer main body 10 side is larger
than the setting value on the control console 20 side, green light of D1 is emitted. When the
parameter setting value on the second light emission state mixer main body 10 side is smaller
than the setting value on the control console 20 side, red light of D2 is emitted.
[0028]
The anode sides of the light emitting diodes D1 and D2 are connected in common and connected
to the power supply Vcc via a resistor R. The cathode sides are respectively independent, and the
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D1 side is connected to the driver DV1, and the D2 side is connected to the driver DV2. The
outputs of the voltage control and oscillation circuit 24 are connected to the drivers DV1 and
DV2 through switches SW1 and SW2, respectively. The switching control signal of these switches
SW1 and SW2 is given from the level comparison control unit 23. Although the circuit
configuration of the control console shows only a certain parameter setting switch unit of a
certain channel in the drawing, in fact, the same circuit as the circuit of the drawing is provided
for each parameter of each channel. The operation of the system configured in this way is as
follows.
[0029]
Usually, the operation unit 21 (not shown) of the control console 20. The knob of the parameter
setting switch (see FIG. 4) is operated to send the set value to the mixer body 10 via the cable 1.
On the mixer body 10 side, when the interface unit 13 receives the parameter setting value, the
control unit 11 applies the parameter value to the parameter setting switch of the corresponding
operation unit 12 and the parameter value is as instructed by the control console 20. change. As
a result, in the mixer body 10, each parameter set value is set to an optimal value, and optimal
mixing can be performed.
[0030]
However, parameter setting values may be changed independently of the control console 20 on
the mixer body 10 side. For example, the mixer main body 10 is set to the parameter setting
value change mode by pressing a function switch (not shown) to change the parameter setting
value. For example, there are times when the parameters of each channel are first read out of
scene data from the scene memory 14 on the side of the mixer body 10 and given to the
operation unit 12, and the parameters of each channel are entirely changed. When such a change
is made, the parameter setting value read from the scene memory 14 is given to the operation
unit 12 to change the parameter setting value of the operation unit 12. At the same time, the
parameter setting value read out from the scene memory 14 is notified to the control console 20
via the interface unit 13 and the cable 1.
[0031]
The control console 20 notifies the level comparison control unit 23 of the received parameter
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setting value through the interface unit 22. The level comparison control unit 23 performs level
comparison with the parameter setting value set in the panel of the operation unit 21 of its own
for each parameter setting value of each channel. As a result of level comparison, it is assumed
that the setting value on the mixer body side> the setting value on the control console. At this
time, the level comparison control unit 23 turns on SW1 to turn on the green light emitting diode
D1 (in fact, since it is driven by the output of the voltage control oscillation circuit 24, it is in a
blinking state). Furthermore, the level comparison control unit 23 also obtains the magnitude of
the level difference between the mixer body side set value and the control desk side set value.
When the level difference is large, a control signal is sent to the voltage control oscillation circuit
24 to slow the oscillation frequency. As a result, the light emitting diode D1 repeatedly blinks
slowly. If the difference is small, a control signal is sent to the voltage control oscillation circuit
24 to increase the oscillation frequency. As a result, the light emitting diode D1 repeatedly blinks
rapidly.
[0032]
The operator adjusts the knob so that both the light emitting diodes D1 and D2 are turned off
while watching the light emitting state of the LED. That is, since the change of the parameter
setting value is always given to the level comparison control unit 23, the level comparison
control unit 23 changes the light emission state of the light emitting diodes D1 and D2 according
to the level difference at that time. In the case where the set value on the mixer main body side>
the set value on the control console, the light emitting diode D1 is lit green, so that the operator
knows that the set value on the mixer main body side> the control console set value. Can.
[0033]
Here, assuming that the degree of the difference is large, the light emitting diode D1 repeatedly
blinks slowly at first. The operator turns the knob of the parameter setting switch while watching
this blinking state. As a result, the blinking state of the light emitting diode D1 becomes faster as
the difference is reduced. Then, when the two parameter setting values coincide with each other,
the light emitting diode D1 is turned off.
[0034]
In the above, although the case where the setting value of the mixer body side> the setting value
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of the control console has been described as an example, the same applies to the case where the
setting value of the mixer body side <setting value of the control console. In this case, not the
green lighting of the light emitting diode D1, but the red lighting of the light emitting diode D2.
The change in the blinking state based on the magnitude of the difference is the same. That is,
when the difference is large, the light emitting diode D2 blinks slowly, and when the difference is
small, it blinks fast. Then, the operator turns the knob of the parameter setting switch while
watching this blinking state. As a result, the knob of the parameter setting switch is turned to
turn off the light emitting diode D2 from the blinking state.
[0035]
In the above description, although both light emitting diodes D1 and D2 are turned off when both
parameter setting values coincide with each other, both light emitting diodes D1 and D2 are
turned on together. It can also be done. In this case, since the green and red light emitting diodes
light simultaneously, it is as if it were orange light.
[0036]
FIG. 2 is a view showing the light emission state of the LED. This figure tabulates the light
emission state of the light emitting diodes D1 and D2 described in the above-mentioned
embodiment. The portion shown as "lighting" in the figure actually indicates a blinking state.
Then, the blinking cycle changes as shown in the figure according to the magnitude of the
difference.
[0037]
FIG. 3 is a block diagram showing a specific configuration example of the control console 20. As
shown in FIG. The same components as those in FIGS. 2 and 4 are denoted by the same reference
numerals. In the figure, reference numeral 60 denotes a CPU which performs the entire control
operation, and is a concept including the level comparison control unit 23 and the voltage
control oscillation circuit 24 of FIG. Reference numeral 21 denotes an operation unit, which
constitutes, for example, a matrix of volumes VR and two-color light emitting diodes D. In each
channel, units of volume VR and light emitting diode D are provided as many as the number of
parameters.
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[0038]
Reference numeral 25 denotes an LED driver for driving the light emitting diode D of the
operation unit 21; and 26, a line selector and driver for periodically selecting and driving a
power supply line for each channel of the operation unit 21. The LED driver 25 and the line
selector & driver 26 are controlled by the CPU 60. That is, drive control is performed from the
output port provided in the CPU 60. On the other hand, the setting signal from the volume VR of
the parameter setting unit is input as an analog signal to the A / D input port of the CPU 60, and
internally converted into digital data by the A / D converter.
[0039]
22 is a MIDI interface unit connected to the mixer body 10 side, 27 is a program ROM in which a
control sequence is stored, and 28 is for temporarily storing parameter setting values sent from
the mixer body 10 side via the interface unit 22 It is a data RAM. The operation of the device
configured as described above is as follows.
[0040]
The parameter setting value sent from the mixer body 10 is taken into the inside through the
interface unit 22 and temporarily stored in the data RAM 28. The CPU 60 sequentially reads
each parameter of each channel from the data RAM 28, and compares it with the setting value
set by the volume VR of the parameter setting unit. Then, the corresponding light emitting diode
D is driven from the LED driver 25 according to the comparison result. At the same time, a
control signal is sent to the line selector & driver 26 so that the light emitting diode D emits light
in the corresponding line at a cycle as shown in FIG. Here, the line selector & driver 26 has lines
corresponding to the number of channels, and control signal lines corresponding to the number
of lines are output from the output port of the CPU 60.
[0041]
By performing such an operation on all parameter setting units of all channels, it is possible to
inform the operator of which parameter setting values of which channel on the mixer main body
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10 side and the control console 20 side differ and how. it can. The operator adjusts the knob of
the parameter setting switch so that the light emitting diode D of each parameter setting unit is
turned off. In this manner, the parameter setting value on the mixer body 10 side can be made to
coincide with the parameter setting value on the control console 20 side.
[0042]
In the above description, the parameter setting values are read out from the scene memory 14 on
the mixer body 10 side, and the parameter setting values on the mixer body 10 side are
simultaneously changed. However, the present invention is not limited to this. It is possible to set
the mixer main body 10 side in the parameter setting value change mode and adjust the knob of
the parameter setting switch on the operation unit 12 to change any parameter setting value of
any channel independently. Also in such a case, when the control unit 11 recognizes a change in
the parameter setting value, only the parameter setting value is notified to the control console 20
via the cable 1, and the control console 20 performs the operation as described above. The
parameter setting value on the mixer body 10 side and the parameter setting value on the
control console 20 side can be matched.
[0043]
In the above-described embodiment, green and red are used as the colors of the light emitting
diodes D1 and D2. However, the present invention is not limited to this, and light emitting diodes
of other colors can be used. In the case of changing the blinking cycle of the light emitting diode
according to the level difference between the mixer body side and the control console, the case
where the level difference is large slowly and slowly when the level difference is small is taken as
an example. This flashing cycle may be reversed.
[0044]
As described above in detail, according to the present invention, there is no inconsistency
between the parameter set value on the mixer main body side and the parameter set value on the
control console side, and the apparatus becomes larger. It is possible to provide a mixer system
that does not have to be done, and the practical effect is extremely large.
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