JP2006287716A - Sound adjustment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a sound adjustment apparatus which improves balance of sound and adjusts the sound at approximately the same level by automatically performing gain control of sound pressure levels of a plurality of inputted sound signals. <P>SOLUTION: The sound adjustment apparatus 10 has a plurality of sound adjustment means (11a-11n) for adjusting and outputting volume of the plurality of inputted sound signals, etc. and the sound adjustment means have functions for automatically performing input gain control of their circuits 11a-11n by detecting sound input levels of each. One input circuit which serves as reference is selected among input circuits in the plurality of sound adjustment means, gain of the input circuit is set as a prescribed reference value (14) and the gain control in the other input circuit is automatically performed on the basis of the reference value. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an audio adjustment device that adjusts and outputs the volume of a plurality of input audio signals in a mixing console used for recording, editing, broadcasting, and the like, and in particular, gain of an input circuit in the audio adjustment device It relates to the adjustment method.

  2. Description of the Related Art Conventionally, mixing consoles used in various broadcasting and recording studios for processing and adjusting a plurality of audio signals and producing audio software are known. In this type of mixing console, for example, a plurality of audio signals are input from a device such as a microphone or an audio reproduction device, and the volume level of each audio signal is adjusted using a plurality of corresponding audio adjustment means. Audio output device is used.

  Each sound adjustment means in this type of sound adjustment device is provided with an adjustment level specifying means for specifying a volume adjustment level, and amplifies the sound signal at the adjustment level specified by the adjustment level specifying means. And is configured to adjust the volume. In such a sound adjusting device, the plurality of sound adjusting means are classified into a plurality of groups each constituted by a plurality of sound adjusting means, and various adjustments of the sound adjusting means for each group are performed as necessary. (For example, see Patent Document 1 and Patent Document 2).

JP2001-142476 JP 2004-140531 A

  By the way, in the case of adjusting individual audio signals by the audio adjusting means constituting the audio adjusting device described above, conventionally, the volume level of each audio signal has been manually operated by an adjustment switch (knob) or the like. ing. Therefore, there is a problem that the adjustment operation becomes troublesome and complicated as the number of sound adjusting means increases. In particular, audio signals from sound sources in the same place are grouped and audio signals from related sound sources are adjusted as a group, but when the number of sound sources reaches a large number, all of them are accurately adjusted in a short time. It was very difficult to adjust.

  For example, among the various adjustment functions in each audio system of this type of audio adjustment device, there is gain adjustment of a plurality of audio signal input circuits. In order to do this, the operator inputs each audio input signal. It is necessary to perform the operation while looking at the meter or monitoring the sound, and the more the number of sound channels to be adjusted, the more complicated it is. If the gain cannot be adjusted in advance by rehearsal, etc., the operator of the audio adjustment device must monitor the audio input level of dozens of channels and concentrate on gain adjustment to maintain an appropriate mixing balance. did not become.

  In other words, the input gain of the audio signal described above is adjusted according to the experience of the operator and the rating of the connection signal source. However, the sound signal level of the microphone has factors that determine the level of the sound source, space, microphone, etc., and rehearsal is required for reliable adjustment. There are dozens of these input gain adjustments on the sound adjustment device having a plurality of input circuits, which is a heavy burden on the operator.

  The present invention has been made in view of such circumstances, and when a plurality of audio signals are inputted, gain adjustment of each audio sound pressure level is automatically performed to obtain a well-balanced sound and almost An object of the present invention is to obtain a sound adjusting device capable of aligning sound pressure levels at the same level.

  In order to meet such an object, a sound adjustment device according to the present invention (the invention according to claim 1) includes a plurality of sound adjustment means for adjusting and outputting the volume of a plurality of input sound signals. In the audio adjustment device, each audio adjustment means has a function of automatically adjusting the input gain adjustment of the input circuit by detecting each audio input level, and the input in the plurality of audio adjustment means Select one input circuit as a reference from among the circuits, set the gain of this input circuit to a predetermined reference value, and automatically adjust the gain adjustment in other input circuits based on the reference value It is configured as described above.

  According to such a configuration, the gain adjustment in the group consisting of a plurality of sound adjustment means may be performed only by setting the reference value to one input circuit, and the rest can be automatically performed. Therefore, the conventional troublesome operation is unnecessary, and the adjustment can be appropriately performed. In particular, by performing automatic gain adjustment within a group based on a reference value set for one input circuit, the gain adjustment range for other input circuits can be narrowed because adjustment from the reference value is sufficient. As a result, the automatic gain adjustment time in the group can be shortened.

  Here, the group consisting of a plurality of sound adjusting means may be composed of a plurality of correlated sound signals such as sound signals obtained from substantially the same place or sound signals from related sound sources. However, of course, it is not limited to this.

  The sound adjustment device according to the present invention (the invention according to claim 2) is the sound adjustment device according to claim 1, wherein the gain adjustment value in the input circuit among the plurality of sound adjustment means exceeds an allowable value. It is provided with a warning function.

According to such a configuration, when performing gain adjustment within the same group in which automatic gain adjustment is specified, a warning can be given when the value of gain adjustment exceeds an allowable value. Therefore, the gain adjustment as the sound adjustment device can be performed more accurately.
Here, the permissible value means a deviation that can occur when the audio signal from the microphone or line is functioning normally, and is a value that can be determined that some abnormality has occurred if it is outside this range. is there.

  As described above, according to the sound adjustment device of the present invention, the gain adjustment in the group consisting of a plurality of sound adjustment means may be performed only by setting the reference value to one input circuit, and the rest is automatically performed. Since it can be performed, the operator does not need a troublesome operation as in the prior art, and the adjustment can be appropriately performed. Further, since such automatic gain adjustment is performed with reference to a reference value set in one input circuit, it is possible to shorten the gain adjustment time for the plurality of sound adjusting means as a whole.

  In addition, according to the present invention, it is possible to ask the operator's judgment by a warning when the gain adjustment value exceeds the allowable value during automatic gain adjustment. Can be performed more accurately.

Therefore, according to the audio adjustment device of the present invention, when a plurality of audio signals are input, the gain adjustment of each audio sound pressure level is automatically performed to obtain a well-balanced sound, and the sound is almost the same level. There is an excellent effect that the pressure level can be made uniform.
The audio adjusting device of the present invention is
There is an advantage.

FIG. 1 shows an embodiment of a sound adjustment apparatus according to the present invention.
In the figure, reference numeral 10 denotes an audio adjustment device that characterizes the present invention, and the audio adjustment device 10 adjusts and outputs the volume of a plurality of audio signals input from a plurality of sound sources 1a to 1n. A plurality of sound adjusting means. Each of the plurality of sound adjustment means includes input gain adjustment circuits 11a to 11n, and also includes other necessary adjustment means.

  Each of the sound adjustment means has a function of automatically adjusting the input gain adjustment of the input gain adjustment circuits 11a to 11n by detecting the respective sound input levels. That is, according to the present invention, one input circuit (for example, 11a) serving as a reference is selected from the input gain adjustment circuits 11a to 11n in the plurality of sound adjustment means, and the gain of the input gain adjustment circuit 11a is A predetermined reference value is set by an input operation 14 by the operator. The gain adjustment in the other input gain adjustment circuits 11b to 11n is automatically adjusted based on the reference value.

  In FIG. 1, reference numeral 12 denotes a microprocessor as a control unit, and reference numeral 13 denotes an audio sound pressure level detection unit that detects the audio sound pressure level of each audio input. The respective gain adjustment circuits 11b to 11n are controlled by the microprocessor to automatically adjust the respective gains.

  That is, after the sound sound pressure level of the input gain adjusting circuits 11a to 11n is detected by the sound sound pressure level detecting unit 13, the change width of the input gain for obtaining the reference sound pressure level is calculated by the microprocessor 12, and the result is obtained. Input gain adjustment is performed. Here, the above-described detection has an auditory correction and an averaging process, and performs a process close to the sound pressure level felt by a person.

Needless to say, the input operation 14 of the operator who sets the reference value is also transmitted from the microprocessor 12 to the corresponding input gain adjustment circuit 11a and controlled.
In FIG. 1, reference numeral 15 denotes a display means for displaying the signal state of each audio signal and the adjustment result state.

  According to the above configuration, in the audio adjustment device 10 for adjusting audio signals from the correlated sound sources 1a to 1n, one of a plurality of audio adjustment means (a plurality of input channels) is defined as a reference channel. Decide. Then, the input gain of the reference channel is set to a predetermined value (reference value).

  In this state, the other input channels are set as an input channel group that automatically adjusts based on the reference value, and the gains of these input gain adjustment circuits 11b to 11n are temporarily controlled by the microprocessor 12 and the reference values described above. Set to value.

  Next, the sound pressure level in the input gain adjustment circuit 11a of the reference channel is compared with the sound pressure levels in the input gain adjustment circuits 11b to 11n of other channels for a predetermined time, and the gain difference is detected via the detection unit 13. The microprocessor 12 grasps. Then, by automatically adjusting the circuits 11b to 11 so that the gain in the other channel becomes the same as the sound pressure level in the reference channel, in other words, the gain difference is eliminated. Gain adjustment for the entire group can be performed automatically.

  According to the configuration as described above, the gain adjustment in the group consisting of a plurality of sound adjustment means may be performed only by setting the reference value to one input circuit 11a, and the rest can be automatically performed. The operator does not need a troublesome operation as in the past, and can also be adjusted appropriately. In particular, by performing automatic gain adjustment within a group based on a reference value set in one input circuit 11a, the other input circuits 11b to 11n are narrowed because the gain adjustment range may be adjusted from the reference value. As a result, the automatic gain adjustment time in the group can be shortened.

  Here, the group consisting of a plurality of sound adjusting means means a plurality of correlated sound signals such as a sound signal obtained from a sound source located in substantially the same place or a sound signal from a related sound source. What is necessary is just to comprise. Such sound sources 1a to 1n include various types such as a plurality of microphones for collecting the same type of sound source, or appropriate audio signals received via a plurality of transmission lines.

FIG. 2 shows an operation flow of the sound adjustment device 10 as described above. This will be briefly described. When the audio of the program shown in S101 is mixed and adjusted and broadcast and recorded using the audio adjusting device 10, the system is first set in S102. Next, in S103, a plurality of sound sources are connected to a plurality of input circuits of the sound adjustment device.
In step S104, the operator performs basic adjustment of the sound adjustment device.

In step S105, the input gain is adjusted. In step S106, the audio adjustment device 10 receives audio signals from the signal sources. The input gain of the input circuit 11a based on S107 is adjusted and set.
In S108, an input circuit to be matched with the sound level similar to the input sound level determined as the reference is determined and set and input to the sound adjusting device 10. In step S109, automatic adjustment is started. In step S110, the completion of the adjustment is confirmed, and the adjusted gain is also confirmed.

By the way, among the voice inputs by the plurality of voice adjusting means described above, the sound pressure level may be too high to perform automatic gain adjustment. In such a case, a warning means is attached to the display means 15 or the like (or may be provided separately), and gain adjustment values in the plurality of input gain adjustment circuits 11b to 11n exceed an allowable value. It is better to be able to warn
Here, the permissible value means a deviation that can occur when a sound signal from a sound source such as a microphone or a line is functioning normally, and if it deviates from this, it can be determined that some abnormality has occurred. A value of about may be used.

  With this configuration, when performing gain adjustment within the same group with automatic gain adjustment specified, it is possible to warn when the gain adjustment value exceeds the allowable value, so it is possible to ask the operator's judgment Thus, the gain adjustment as the audio adjustment device 10 can be performed more accurately.

  That is, it is preferable to determine whether or not the gain difference determined by the microprocessor 12 exceeds the arbitrarily set gain difference allowable value, and when it exceeds, it is preferable to give a warning to the operator by display or the like. The operator determines whether to automatically adjust within the allowable value or to turn off the automatic adjustment. Such a determination indicates that the level difference from the reference channel is large, so that it is possible to detect troubles such as a microphone or a line abnormality.

  The step of setting the adjustment range to an allowable value in advance is described in S120 and subsequent steps in FIG. That is, after the setting in S120, automatic adjustment is started in S121, confirmation after the adjustment is performed in S122, and a warning is given in the case where the adjustment cannot be made within the allowable value in S123.

  Therefore, according to the audio adjusting device 10 of the present invention, when a plurality of audio signals are input, the gain adjustment of each audio sound pressure level is automatically performed to obtain a well-balanced sound and almost the same level. The sound pressure level can be made uniform.

  That is, when collecting the same type of sound source with multiple microphones, when playing back a recording medium containing multiple audio signals, the audio signal received via multiple transmission lines is the same as the main audio signal. If it is, it is desirable that the level is almost the same. This is obvious when compared to a stereo signal, because there are many recordings intended to localize the main audio signal in the center.

  According to the present invention, since the input gain is adjusted by detecting and comparing the sound pressure level in the sound adjusting device 10, level deviations in a plurality of sound sources such as a microphone and each transmission circuit can be absorbed, and the sound adjusting device is operated. The advantage is that the person can concentrate on the mixing work.

  It should be noted that the present invention is not limited to the structure described in the above-described embodiment, and it goes without saying that the shape, structure, and the like of each part constituting the sound adjustment device 10 can be appropriately modified and changed.

1 is a block diagram of a schematic configuration showing an embodiment of a sound adjustment device according to the present invention. It is a flowchart for demonstrating operation | movement of the audio | voice adjustment apparatus which concerns on this invention.

Explanation of symbols

  1a, 1b,..., 1n ... audio signals from the sound source, 10 ... audio adjustment device, 11a, 11b, ..., 11n ... input gain adjustment circuit in the audio adjustment means, 12 ... microprocessor (control unit), 13... Sound sound pressure level detection unit, 14... Input operation, 15... State, result display means (including warning means).

Claims (2)

In a sound adjustment device comprising a plurality of sound adjustment means for adjusting and outputting the volume of each of a plurality of input sound signals,
Each of the sound adjustment means has a function of automatically adjusting the input gain adjustment of the input circuit by detecting each sound input level,
One input circuit as a reference is selected from the input circuits in the plurality of sound adjustment means, the gain of the input circuit is set to a predetermined reference value, and the gain adjustment in the other input circuits is performed using the reference value. A voice adjustment device configured to automatically adjust based on the reference. The sound adjustment device according to claim 1,
An audio adjustment device comprising a warning function when a gain adjustment value in an input circuit exceeds an allowable value among a plurality of audio adjustment means.

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