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JP2009232301

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2009232301
PROBLEM TO BE SOLVED: In a monitor control system for monitoring an audio signal in an
audio device, a technique for exclusively controlling whether to send a monitor signal to a
headphone or a speaker by a simple operation, and solving an inrush problem at switching
Intended to provide. An exclusive operator is provided to instruct which of a headphone and a
monitor speaker the monitor sound is to be output. This makes it possible to exclusively switch
the output destination of the monitor sound by a simple and intuitive operation without
operating a plurality of operators simultaneously. In addition, an operator for instructing on / off
of monitor sound to the headphone is added to a speaker selection operator for selecting a
monitor speaker. This makes it possible to control the on / off of the monitor sound to the
headphones by the same operation as the speaker select. A fade process is performed when the
headphones and monitor speakers are switched off / on. [Selected figure] Figure 1
モニタコントロールシステム
[0001]
The present invention relates to a technique for exclusively controlling whether to send a
monitor signal to headphones or to a speaker in an audio device such as a mixer that processes
audio signals.
[0002]
A conventional audio device such as a mixer is usually provided with a function to monitor
various audio signals in the device (a function to be monitored by a PA engineer or operator in a
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1
space called a PA room or a PA booth). It is done.
For example, in the mixing console of Non-Patent Document 1 below, the same signal can be sent
to the output terminal to the headphone and the output terminal (CR out) to the monitor speaker
for monitoring. The monitor function of the mixing studio of Non-Patent Document 2 below has
functions of source select and speaker select. The source select is a function of selecting a signal
to be monitored, and the speaker select is a function of selecting a monitor output terminal for
outputting a monitor signal (in short, selecting a monitor speaker for outputting a monitor
sound). The signal selected by source select is fixedly output to the headphones.
[0003]
In the non-patent documents 1 and 2, for the headphone and the monitor speaker, volumes for
level adjustment are provided independently of each other (in some cases, inexpensive mixers
and the like collectively perform level adjustment). The headphone and the monitor speaker can
be independently turned on / off, adjusted in volume, and the like. DIGITAL MIXING CONSOLE
01V 96, instruction manual, page 330 block diagram, Yamaha Co., Ltd., 2005 published DIGITAL
MIXING STUDIO n 8 / n 12, instruction manual, page 58 block diagram, Yamaha Co., Ltd, 2007
published
[0004]
The above-mentioned conventional mixer does not exclusively control the output to the
headphone and the output to the monitor speaker. Therefore, when you want to listen to the
sound from the speaker, you may not be able to hear the sound from the headphone, so operate
the controls to lower the volume of the sound output from the headphone, and conversely, to
hear the sound from the headphone Since it would be bothersome to hear the sound from the
speaker, it was necessary to reduce the volume of the sound output from the speaker as well. It is
troublesome to perform the operation of the volume control operation element of the headphone
and monitor speaker independently prepared in this way in parallel. Therefore, the conventional
mixer can not meet the desire to immediately switch the actual devices (headphones and
speakers) that actually output the sound.
[0005]
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2
In the speaker selection function as described in Non-Patent Document 2 described above, the
speaker that outputs the monitor signal can be switched by an operation element such as a
button, but only the speaker is selected and the headphones are included. Absent. Also, with this
speaker select function, since the signal to be output to the output terminal is merely muted,
there is a possibility that an inrush will occur when off → On, especially when a loud speaker is
connected , May damage the speaker. Therefore, always check that the level is falling when (1)
Off → On, turn the switch Off → On, and raise the level (2) When turning On → Off, lower the
level and then switch You have to do the operation of turning on → off. It is troublesome to
perform the above operation every time the speaker is switched.
[0006]
Also, in the case of an audio device such as a general audio amplifier or radio cassette player, it is
selected whether the output signal is to be sent to the headphone or to the speaker by
connecting (inserting) the headphone to the headphone terminal. In the case of such devices,
since the output destination of the sound is switched by the connection of the physical terminal,
an operation such as plugging and unplugging is essential, and the volume level must be
readjusted after the operation. There are not a few cases. There is also the problem of inrush
when switching connections.
[0007]
An object of the present invention is to provide a technique that exclusively controls whether a
monitor signal is sent to a headphone or a speaker with a simple operation, and also solves the
problem of inrush at the time of switching.
[0008]
In order to achieve the above object, the invention according to claim 1 is a monitor control
system for monitoring an audio signal in an audio device, and for instructing which of a
headphone and a monitor speaker to output a monitor sound from. When the controller instructs
(1) output from the headphones by the controller, the monitor signal is output to the
headphones, and the output of the monitor signal to the monitor speaker is stopped, (2) the
controller And an exclusive output destination selecting means for outputting the monitor signal
to the monitor speaker and stopping the output of the monitor signal to the headphone when the
output from the monitor speaker is instructed by the control unit. .
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3
[0009]
The invention according to claim 2 is a monitor control system for monitoring an audio signal in
an audio device, which is a monitor for selecting a monitor speaker from among a plurality of
monitor speakers having a plurality of lines. A headphone on / off operator for switching on / off
of monitor sound output by headphones provided adjacent to the operator for selection and the
operator for speaker selection, and the operator for speaker selection The monitor signal is
output to the selected monitor speaker series, and when the headphone on / off operator is on,
the monitor signal is output to the headphone, and the headphone on / off operator is off.
Control to stop output of monitor signal to headphone when Characterized in that it comprises a
previous control unit.
[0010]
The invention according to claim 3 is that, in the monitor control system according to claim 1 or
2, when the output of the monitor signal to the monitor speaker or headphone is started or
stopped, the monitor signal fades in at the start of the output. The apparatus further comprises
means for performing a fade process such that the monitor signal fades out when the output is
stopped.
[0011]
According to the present invention, it is possible to switch the output destination of the monitor
sound by a simple and intuitive operation without simultaneously operating a plurality of
operators.
In addition, since the fade processing is performed when switching the output destination of the
monitor signal, it is extremely effective in terms of speaker and amplifier protection without an
excessive current flowing especially when Off → On.
As for headphones, it also protects the human ear.
[0012]
Hereinafter, embodiments of the present invention will be described using the drawings.
[0013]
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4
FIG. 1 shows a schematic module configuration of a mixer 100 to which the present invention is
applied.
A signal input from the input signal source 111 such as a microphone to the input circuit 101 is
subjected to adjustment processing of a volume level, mixing processing, effect imparting
processing and the like by the signal processing circuit 102, and then output to the output circuit
103.
The output circuit 103 outputs an audio signal from the signal processing circuit 102, and also
includes a monitor signal output circuit 104, and outputs an acoustic signal for monitoring from
the speaker 112 or the headphone 113.
The communication I / F (interface) 105 is connected to a headphone hanger 114 on which the
headphones 113 are placed, and can detect whether the headphones 113 are placed. The control
circuit 107 detects an operation of the operation element 106, and controls the signal processing
circuit 102, the output circuit 103, and the communication I / F 105 according to the operation.
[0014]
FIG. 2 shows an example of the hardware configuration of the mixer 100 of FIG. A CPU (central
processing unit) 201 is a processing unit that controls the operation of the entire mixer. A
random access memory (RAM) 202 is a volatile memory used as a load area or a work area of a
program executed by the CPU 201. A ROM (Read Only Memory) 203 is a non-volatile memory
that stores control programs executed by the CPU 201 and various data. The operating element
205 is an operating element such as a switch or a slider provided on the external panel of the
mixer 100. The operation of the operating element 205 is detected by the detection circuit 204,
and the detection result is sent to the CPU 201. The display unit 207 is a display that displays
various types of information. Display circuit 206 displays the received data on display unit 207
based on an instruction from CPU 201. The communication interface (I / F) 208 is an interface
for connecting to the external device 209. The connection method may be any. In the present
embodiment, the communication I / F 208 corresponds to the communication I / F 105 in FIG. 1,
and the external device 209 corresponds to the headphone hanger 114 in FIG. 1. The input
circuit 210 (101 in FIG. 1) receives an acoustic signal from a microphone or the like 211 (111 in
FIG. 1). The input acoustic signal is subjected to various signal processing such as mixing by a
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DSP (signal processing circuit 102 in FIG. 1) (not shown), and is output from an output circuit
212 (103 in FIG. 1). As described in FIG. 1, the output circuit 212 includes the monitor signal
output circuit 104, and can output a monitor signal to the speaker or the headphone 213 (112
and 113 in FIG. 1).
[0015]
FIG. 3 shows the hardware configuration of the headphone hanger 114. The sensor 305 and the
detection circuit 304 detect whether the headphone 113 is placed or not, and send the detection
result to the CPU 301. The CPU 301 executes the programs stored in the RAM 302 and the ROM
303 to send the information indicating the state of placement of the headphones 113 sent from
the detection circuit 304 to the external device 307 (in the present embodiment, via the
communication I / F 306). Send to mixer 100).
[0016]
FIG. 4A shows processing when an exclusive toggle operation of a monitor output is performed in
the mixer 100. FIG. FIG. 4B shows an operator for output selection for monitoring provided on
the external panel of the mixer 100. Reference numeral 411 denotes a button for exclusively
selecting the monitor speaker 112 or the headphone 113. 412 is a volume for level adjustment
of the speaker 112, and 413 is a volume for volume adjustment of the headphone 113. When the
button 411 is pressed, the processing of FIG. 4A is executed.
[0017]
In step 401, it is acquired whether the present monitor sound generation state is the speaker or
the headphone. If the speaker is sounding, the process proceeds from step 402 to 403 to turn off
the speaker and turn on the headphone. If so, the process proceeds from step 402 to step 404 to
turn off the headphones and turn on the speakers. Note that the output of the monitor signal to
the speaker or headphone that has been turned off is stopped, and the output to the person that
has been turned on is started. At step 405, the current tone generation state is updated and the
process ends.
[0018]
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According to the above process, it is possible to exclusively control whether the monitor signal is
sent to the speaker or to the headphone. The operation is also easy. In addition, since the volume
for the speaker and the volume for the headphone are provided independently, it is not necessary
to operate the volume control each time the headphone / speaker is switched as the output
destination of the monitor signal as in the prior art. For example, even if the volume 413 for
headphones is set to a predetermined level and then the output destination is switched to the
speaker and then returned to the headphones again, the level set for the headphones does not
change. The same applies to the level of the speakers. In this way, it is possible to switch between
headphones / speakers while keeping the volume you want to listen to at all times. Usually, in the
sound system, once the output level is set once, it is not reset unless it has a considerable effect.
However, according to the exclusive toggle operation of FIG. 4, not only complicated operations
are reduced but the set values up to the previous time are kept. You can still switch headphones /
speakers.
[0019]
Note that the speaker level and the headphone level are stored internally, the two volumes 412
and 413 are replaced by one rotary encoder, and the level selected as the output destination is
changed by the rotary encoder You may do so.
[0020]
FIG. 5 is another example different from FIG. 4 and shows an example in which there are a
plurality of monitoring speakers.
FIG. 5A shows the process when the selection operation of the plurality of speakers or
headphones is performed. FIG. 5B shows a plurality of monitor speakers provided on the external
panel of the mixer 100 and operators for selecting headphones. Four buttons shown in 511 are
buttons for selecting the speakers 1, 2, 3 or headphones, respectively. Four volumes indicated by
512 are operators for adjusting the volume of each speaker and headphones. When any one of
the four buttons 511 is pressed, the process of FIG. 5A is executed.
[0021]
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In step 501, the current sounding state of the speaker or headphone corresponding to the
operated button is acquired, and when not sounding, the process proceeds from step 502 to 503,
and the speaker or headphone corresponding to the button is sounded To set. If the current state
is the sound generation state, the process proceeds from step 502 to 504, and the sound
generation from the speaker or headphone corresponding to the operated button is stopped. At
step 505, the current pronunciation state of the speaker or headphone corresponding to the
operated button is updated, and the process is ended.
[0022]
In the example of FIG. 5, the buttons 511 corresponding to three speakers and one headphone
each function as a toggle operator to switch whether to output a monitor signal to the
corresponding speaker or headphone. Intuitive and easy-to-understand operations can switch
output / non-output for each speaker or headphone. In this example, since each system of the
speakers and the headphones are not exclusively controlled, for example, it is possible to output
from both the speakers 1 and 2 or monitor output from both the speakers 1 and the headphones.
However, exclusive control of each system of speakers and headphones may be performed.
[0023]
Further, in the example of FIG. 5 also, since the volumes for the respective speakers and the
headphones are provided independently, it is possible to switch the headphones / speakers while
keeping the setting values up to the previous time.
[0024]
FIG. 6 shows a fade table used when stopping or starting the sound generation in the speaker or
the headphone in steps 403 and 404 in the example of FIG. 4 or steps 503 and 504 in the
example of FIG.
FIG. 6 (a) shows the rate value according to time in tabular form, and FIG. 6 (b) is a graph of it.
When sound generation on a speaker or headphone is to be started, a rate value which gradually
rises from 0 to 1 in a predetermined time is generated based on the fade table of FIG. 6 from the
time when the start is instructed. It multiplies and outputs the result to the corresponding
speaker or headphone. Conversely, when stopping the output of the speaker or monitor, a rate
value that gradually falls from 1 to 0 in a predetermined time is generated based on the fade
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table shown in FIG. The rate value is multiplied and the result is output to the corresponding
speaker or headphone. As described above, if the fade processing is performed each time the
output destination of the monitor signal is switched, an excessive current does not flow suddenly
particularly when Off → On, which is very effective in terms of speaker and amplifier protection.
Also, with regard to headphones, it will protect the human ear. It is also possible to prevent noise
generated by rapid signal on / off.
[0025]
FIG. 7 shows the appearance of the headphone hanger 114. The headphone hanger 114 includes
a recess 701 on which the headphone 113 is placed, and a sensor 702 for detecting whether the
headphone 113 is placed in the recess 701 is provided.
[0026]
FIG. 8 is a flow of On / Off command transmission processing in the headphone hanger 114
described with reference to FIGS. 1 and 7. This process is a process executed by the CPU 301 of
FIG. 3 when the sensor 702 of the headphone hanger 114 responds (i.e., when the headphone
113 is hung on or removed from the headphone hanger 114).
[0027]
When the current state (the state before the sensor 702 responds) in step 801 is headphones Off
(the state in which the headphones 113 are removed from the headphone hanger 114 is referred
to as Off), the headphones 113 are headphone hangers. Since it is applied to 114 that the sensor
702 has reacted, an On command is generated in step 802, and the command is transmitted to
the mixer 100 in step 804. If the current state is headphone On (the state in which the
headphone 113 is hung on the headphone hanger 114 is referred to as On), it means that the
headphone 113 is removed from the headphone hanger 114 and the sensor 702 responds. In
step 802, an Off command is created, and in step 804, the command is transmitted to the mixer
100.
[0028]
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9
FIG. 9 is a flow of the On / Off command reception process executed on the mixer 100 side when
the On / Off command transmitted from the headphone hanger 114 in the process of FIG. 8 is
received. At step 901, the received command is analyzed. When the On command is received, it
means that the headphone 113 is switched from Off to On, so the process proceeds from step
902 to 903 to turn off the speaker and turn on the headphone. If the Off command has been
received, it means that the headphone 113 has been turned on.fwdarw.Off. Therefore, the
processing proceeds from step 902 to step 904, the speaker is turned off, and the headphones
are turned on. Next, at step 905, the current tone generation state is updated and the process
ends. In addition, on / off of the speaker and the headphone is performed by the fade processing
as described in FIG.
[0029]
By using the headphone hanger 114 as shown in FIG. 7 to FIG. 9, it is possible to operate Off /
On on the headphone side instead of operating whether to send a signal to the monitor output
destination on the mixer side. At this time, since the control command is transmitted by
performing the operation on the headphone side (in fact, it is hung on / off from the headphone
hanger), the user does not have to perform the accompanying operation such as the button
operation. In addition, since the mixer can be operated by the operation of putting the
headphones on and off the headphone hanger, it is possible to send commands other than the
output signal switching of the monitor signal, and the operation of other functions of the mixer
(arbitrary parameters in the mixer Control is also possible. For example, if the present invention
is applied to a headphone hanger on which an intercom is placed, the mixer side can detect
whether or not the intercom is attached to a person in charge, and various controls can be
executed according to the state.
[0030]
As described above, the function of switching the output destination of the monitor signal by the
command from the headphone hanger 114 may be implemented in combination with the
example using the switching button described in FIG. 4 or FIG. It may be implemented by
[0031]
Although the example in which the command is transmitted from the headphone hanger has
been described above, the command may be transmitted from the headphone itself.
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FIG. 10 shows an example of such a headphone 113. In this headphone 113, a sensor 1002 is
provided at a portion 1001 of the ear pad where a monitor sound is output. The sensor 1002 is a
sensor that detects whether the user wears the headphone 113. The process of transmitting a
command according to the detection result of the sensor 1002 may be the same as that
described in FIG.
[0032]
The buttons and volumes described in FIG. 4B and FIG. 5B are not provided as hardware on the
external panel of the mixer, but the images of the buttons and volumes are displayed on the
screen and operated with the pointing device. It may be something like
[0033]
A schematic module configuration diagram of a mixer to which the present invention is applied A
hardware configuration diagram of a mixer according to an embodiment A hardware
configuration diagram of a headphone hanger A flowchart showing processing when exclusive
toggle operation of monitor output is performed and provided on an external panel Flow chart
showing processing when there are a plurality of lines of diagram monitor speakers showing
different controls and figure showing fade tables showing controls provided on the external
panel View of headphone hanger On / Off command transmission in headphone hanger Flow
chart of processing Flow chart of On / Off command reception processing executed on the mixer
side Figure showing an example in which a sensor is provided in headphones
Explanation of sign
[0034]
100 ... mixer, 101 ... input circuit, 102 ... signal processing circuit, 103 ... output circuit, 104 ...
monitor signal output circuit, 105 ... communication I / F, 106 ... operator, 107 ... control circuit,
113 ... headphone, 114 ... Headphone hanger.
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