JP5289099B2 - Karaoke system with singing volume adjustment function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a karaoke system for adjusting the output of a singing sound volume mixed when chorus of the same melody is performed, which sets an output state without a sense of incongruity for a listener, by not making noisy for the listener, even when a plurality of singers sing the same melody, during singing of any karaoke musical piece, and by avoiding beat etc. in final output. <P>SOLUTION: For singing voices which are input from both a first microphone and a second microphone, when they are the same melodies, regarding the threshold of a sound volume level which is a starting point for compressing sound volume for input singing voice, and a sound volume compression ratio when it exceeds the threshold value, setting change is performed such that the threshold is set to a threshold TH2 which is lower than a threshold TH1 default-set to an effector, and the sound volume compression ratio is set to a sound volume compression rate "1:5" which is larger than a default-set sound volume compression rate "1:3". <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention belongs to the technical field of a karaoke system, and relates to a system for adjusting a singing volume output mixed at the time of chorus of the same melody.

  In recent years, facilities equipped with a karaoke system often have at least two microphones, which are usually used by two or more microphones compared to solo singing using one microphone. The volume increases in the case of the chorus. Therefore, it is desired to adjust the volume without causing a sense of incongruity even when the volume is increased.

  Conventionally, in a karaoke apparatus, various techniques have been proposed as a countermeasure when the volume output from a speaker becomes so loud that it is difficult to hear. For example, it is proposed to set the output gain of the microphone amplifier according to the setting balance between the vocal audio signal input from the microphone amplifier and the output volume of the music signal, and to control the synthesis of the vocal audio signal from the microphone amplifier and the music signal (Patent Document 1).

  In addition, the auto gain controller may adjust the microphone amplifier so that the sound of each sound signal can be heard at the same sound volume based on the result of comparing the sound volume levels of the sound signals input from the two microphones. It has been proposed (Patent Document 2).

JP 09-214266 A Japanese Patent Laid-Open No. 10-282929

  In general, compared to the output volume of the singing voice input from one microphone, in the case of a choral singing mixed with the same melody from two microphones, the output volume can be heard larger. There is a phenomenon. This phenomenon is based on the so-called “resonance phenomenon”. When a song with the same melody is uttered at the same time, if the volume level increases to some extent, even if the volume level is the same as that of a solo song, When it comes to singing, it may be amplified and heard by the listener.

  By the way, as a technique for final output (speaker output) so that the singing voice can be heard comfortably, there are the above-mentioned Patent Documents 1 and 2, both of which adjust the gain of the microphone amplifier, May cause inconveniences. For example, if the gain is suppressed, one of the singers using each microphone can sing at a relatively large volume, so this volume is adjusted moderately, but the other singer is small. If you can sing only at the volume, lowering the gain at the same ratio will make the volume smaller and harder to hear, which may cause unfairness for the singer.

  In order to solve this problem, assuming that the technique of Patent Document 2 is applied and the volume balance between the two microphones can be adjusted, even if the volume level is relatively low, the volume itself is not adjusted. If the level is already too high, even if the volume level, which is assumed to be relatively high, is suppressed, it will eventually be heard loudly, and this problem cannot be solved. In addition, if the gain is frequently adjusted, there is a problem that a so-called “swell state” occurs in the final output, causing a listener to feel uncomfortable.

  Therefore, the present invention has been made in view of the above problems, and it is noisy to the listener even when there are scenes where a plurality of singers sing the same melody while singing an arbitrary karaoke piece. It is an object of the present invention to provide a karaoke system having a singing volume adjustment function that can be made to be in an output state that does not cause a sense of incongruity for listeners, without making it audible and avoiding undulation of the final output.

  In order to solve the above-mentioned problem, in the invention of claim 1, the singing voice input from each microphone is provided via an effector that includes at least a first microphone and a second microphone and performs volume compression on the singing voice. A karaoke system for outputting to a mixing amplifier, comprising melody comparison / determination means and effector control means, wherein the melody comparison / determination means acquires singing voice from the first microphone and the second microphone, and singing voice is received from both. If they are acquired at the same time, they are compared to determine whether or not they both have the same melody, and the effector control means is a starting point for compressing the volume of the input singing voice when both of the melody are the same as a result of the comparison determination. A threshold lower than a default threshold set for the effector and a default for a threshold of a volume level to be performed and a volume compression ratio when the threshold is exceeded To set change to the effector at least one of greater volume compression ratio than the constant loudness compression ratio, a constituent.

  According to the present invention, when the singing voices input from both the first microphone and the second microphone are the same melody with respect to the singing voices input from the first microphone and the second microphone, The threshold of the volume level as a starting point for volume compression and the volume compression ratio when the threshold is exceeded are at least a threshold lower than the default threshold set for the effector and a volume compression ratio greater than the default volume compression ratio. Even if there is a scene where multiple singers sing the same melody while singing an arbitrary karaoke piece by setting any one to the effector concerned, It is possible to make the output state without any sense of incongruity for the listener, without making it loud and avoiding the undulation of the final output.

It is a block block diagram of the song volume adjustment function part of the karaoke system which concerns on this invention. It is processing explanatory drawing of the melody comparison determination means of FIG. It is control explanatory drawing of the comp / limiter control means of FIG. FIG. 6 is another explanatory diagram (1) of the control / limiter control means of FIG. 1. FIG. 7 is another control explanatory diagram (2) of the comp / limiter control means of FIG. 1.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, a case where two microphones are used in the karaoke system will be described and described, but the present invention can be applied even when there are three or more microphones.

  FIG. 1 shows a block configuration diagram of a singing volume adjustment function part of the karaoke system according to the present invention, and FIG. 2 shows a process explanatory diagram of the melody comparison determination means of FIG. In FIG. 1, the karaoke system 11 includes a first microphone 12 and a second microphone 13. From the first microphone 12 to a mixing amplifier 16 via a first compressor / limiter (first effector) 14 and a first microphone amplifier 15 as an effector (hereinafter referred to as “comp / limiter”) having a limiter and a compressor. Singing voice is input. Note that a conventional device (circuit) can be applied to the effector itself.

  In addition, the singing voice is input from the second microphone 13 to the mixing amplifier 16 via the second compressor / limiter (second effector) 17 and the second microphone amplifier 18 similar to the first comp / limiter 14. The first and second microphone amplifiers 15 and 18 are circuits that amplify an input singing voice (singing volume) with a set gain, and include a volume for appropriately adjusting the gain. The mixing amplifier 16 mixes the amplified singing voices from the first and second microphone amplifiers 15 and 18 and music performance data input from a music database (not shown), and amplifies it with a gain adjustment function such as a volume as appropriate. Are output from the speaker system 19.

  The above configuration is a basic component in the karaoke system 11, and in addition, includes a melody comparison / determination unit 21, a comp / limiter control unit 22 as an effector control unit, and a storage unit 23. In the storage unit 23, storage areas for the first table 24, the second table 25, and the set value 26 are formed. The set value 26 is a threshold value (threshold level) and a compression ratio (compression ratio) for each of the first and second compressor / limiters 14 and 17.

  The first table 24 is the first voice when the singing voice is input from either the first microphone 12 or the second microphone 13 or when both are not the same melody as a result of the comparison judgment by the melody comparison judgment means 21 described later. FIG. 6 is a table for setting default threshold values and compression ratios for the first and second comp / limiters 14 and 17 in the input state (described in FIG. 3). In addition, the second table 25 is configured such that the singing voice is simultaneously acquired from both the first microphone 12 and the second microphone 13 and both the first and second comps / states in the second voice input state in the case of the same melody. It is a table for arbitrarily setting a threshold value and a compression ratio for each of the limiters 14 and 17 (described in FIG. 3).

  The melody comparison / determination means 21 is a program that acquires singing voice from the first microphone 12 and the second microphone 13 and compares and determines whether or not the melody is the same when both singing voices are acquired simultaneously. For example, as shown in FIG. 2, the difference between the singing pitch data input from the first microphone 12 and the singing pitch data input from the second microphone 13 is calculated and compared in a synchronized state. It is determined whether or not the melody is the same depending on whether or not is within a certain range. Here, the pitch is a so-called pitch (pitch) and is represented by a frequency.

  The comp / limiter control means 22 has a volume that is a starting point for compressing the volume of the input singing voice in the second voice input state in the case of the same melody according to the result of the comparison judgment in the melody comparison judgment means 21. With respect to the level threshold value and the volume compression ratio when the threshold value is exceeded, the first compressor / limiter 14 and the second compressor / limiter 17 have a volume equal to or lower than the default threshold value and a volume level greater than the default volume compression ratio. This is a program for changing the setting of at least one of the compression ratios to the first comp / limiter 14 and the second comp / limiter 17.

  The default threshold and compression ratio set in the first voice input state are set from the first table 24 and stored in the set value 26. The threshold and compression ratio in the second voice input state are These are set from the second table 25 and stored in the set value 26 (described in FIG. 3). That is, in each of the first comp / limiter 14 and the second comp / limiter 17, a threshold value and a compression ratio that are set as default in the case of the first voice input state and arbitrarily set in the case of the second voice input state are arbitrarily set. The threshold value and the compression ratio are set each time according to the voice input state.

  In the present embodiment, the first comp / limiter 14 is made to correspond to the first microphone 12, and the second comp / limiter 17 is made to correspond to the second microphone 13, so that each singing sound is Although the volume compression is performed independently, the present invention is not limited to this, and it is possible to simultaneously support both singing voices with a single comp / limiter in which the first comp / limiter 14 and the second comp / limiter 17 are integrated. Good.

  FIG. 3 shows a control explanatory diagram of the comp / limiter control means of FIG. FIG. 3A is an example of the first table 24 that is a default setting target in the case of the first voice input state. As a fixed setting, a threshold (threshold) when a limiter (compression ratio 1: ∞) is set. For example, it is set at “−5 dB”, and for example, the threshold (threshold) TH1 is selected as “−15 dB” and the compression ratio (compression ratio) is selected as “1: 3”, and the setting value 26 of the storage unit 23 is set as a default setting. Remembered.

  FIG. 3B is an example of the second table 25 to be arbitrarily set in the second voice input state, and the threshold (threshold value) when the limiter (compression ratio 1: ∞) is set as a fixed setting. ) Is set at, for example, “−10 dB”, and arbitrarily, for example, the threshold (threshold) TH2 is selected at “−20 dB” and the compression ratio (compression ratio) is set at “1: 5”, and stored in the set value 26 of the storage unit 23. Is done.

  Therefore, in FIG. 3C, the threshold value set by default based on the set value 26 is determined by the comp / limiter control means 22 in the first voice input state based on the result of the comparison determination by the melody comparison determination means 21. (Threshold) TH1 is set to “−15 dB”, and the default compression ratio (compression ratio) is set to “1: 3” for each of the first and second compressor / limiters 14 and 17.

  Then, the first comp / limiter 14 or the second comp / limiter 17 is in the first voice input state, and the volume level of the singing voice input from the first or second microphone 12 or 13 is set to the threshold TH1 “−15 dB”. When it exceeds, the singing volume is compressed to the compression ratio “1: 3” and output to the first microphone amplifier 15 or the second microphone amplifier 18 corresponding to each microphone. When the volume level of the singing voice input from the first microphone 12 and / or the second microphone 13 corresponding to each microphone exceeds the first voice input state limiter “−5 dB”, the compression ratio “1: ”And output to the first microphone amplifier 15 and / or the second microphone amplifier 18 corresponding to each microphone.

  On the other hand, when the result of the comparison determination by the melody comparison determination means 21 is the second voice input state, the comp / limiter control means 22 sets the threshold (threshold) TH1 set based on the set value 26 to “−20 dB”. Then, the set compression ratio (compression ratio) is set to “1: 5” for each of the first and second compressor / limiters 14 and 17.

  Then, the first comp / limiter 14 or the second comp / limiter 17 is in the second voice input state, and the volume level of the singing voice inputted from the first microphone 12 and the second microphone 13 is the threshold TH2 “−20 dB”. When it exceeds, the singing volume is compressed to the compression ratio “1: 5” and output to the first microphone amplifier 15 or the second microphone amplifier 18 corresponding to each microphone. Further, when the volume level of the singing voice input from the first microphone 12 and the second microphone 13 corresponding to each microphone exceeds the second voice input state limiter “−10 dB”, the compression ratio becomes “1: ∞”. It compresses and outputs to the 1st microphone amplifier 15 and / or the 2nd microphone amplifier 18 corresponding to each said microphone.

  As described above, in the case of the first voice input state, the listener does not hear a loud speaker volume, and the threshold (threshold value) TH1 is set to be relatively high, and the compression ratio (compression ratio) is set to be relatively small. In the second voice input state, the threshold (threshold) TH2 is set lower than the threshold (threshold) TH1, and the compression ratio (compression ratio) is set larger than that in the first voice input state. Without adjusting the gain of the microphone amplifier, even if there is a scene where multiple singers sing the same melody while singing any karaoke music, without making the listener hear loud In addition, it avoids the undulation of the final output from the speaker system 19 so that the listener feels uncomfortable. It is capable to output state.

  Next, FIGS. 4 and 5 show other control explanatory views of the comp / limiter control means of FIG. FIG. 3 described above shows a case where both the threshold (threshold value) and the compression ratio (compression ratio) are changed according to the first and second audio input states, but FIG. 4 changes the compression ratio based on the threshold. FIG. 5 shows a case where the threshold is changed as a compression ratio reference.

  In FIG. 4, FIG. 4A is an example of the first table 24 to be set in the case of the first voice input state, and the threshold (when the limiter (compression ratio 1: ∞) is set as the fixed setting. (Threshold value) is set to “−5 dB”, for example, the compression ratio (compression ratio) is arbitrarily selected to “1: 2” with reference to the threshold (threshold value) TH1 “−15 dB”, and the set value 26 of the storage unit 23 is set. Is stored as a default setting.

  FIG. 4B is an example of the second table 25 to be set in the second audio input state, and the threshold (threshold) when the limiter (compression ratio 1: ∞) is set as the fixed setting. Is set to “−10 dB”, and the compression ratio (compression ratio) is arbitrarily selected from “1: 5” with reference to the threshold (threshold) TH1 “−15 dB” in the same manner as described above, and the set value 26 of the storage unit 23 is set. Is remembered.

  That is, as shown in FIG. 4 (C), the first comp / limiter 14 or the second comp / limiter 17 receives the singing voice input from the first or second microphones 12 and 13 in the first voice input state. When the volume level exceeds the threshold TH1 “−15 dB”, the singing volume is compressed to the compression ratio “1: 2” and is output to the first microphone amplifier 15 or the second microphone amplifier 18 corresponding to each microphone.

  Also, the first comp / limiter 14 or the second comp / limiter 17 is in the second voice input state, and the volume level of the singing voice input from the first microphone 12 and the second microphone 13 is set to the threshold TH1 “−15 dB”. When exceeding, it compresses to compression ratio "1: 5", and outputs it to the 1st microphone amplifier 15 or the 2nd microphone amplifier 18 corresponding to the said each microphone.

  In the case of FIG. 5, FIG. 5A is an example of the first table 24 to be set in the case of the first voice input state, and the limiter (compression ratio 1: ∞) is set as the fixed setting. The threshold (threshold value) is set to, for example, “−5 dB”. For example, the threshold (threshold value) TH1 “−15 dB” is arbitrarily selected on the basis of the compression ratio (compression ratio) “1: 5”. 26 is stored as a default setting.

  FIG. 5B is an example of the second table 25 to be set in the second voice input state, and the threshold (threshold) when the limiter (compression ratio 1: ∞) is set as a fixed setting. Is set to, for example, “−10 dB”, and the threshold (threshold value) TH2 “−20 dB” is arbitrarily selected on the basis of the compression ratio (compression ratio) “1: 5” in the same manner as described above, and the setting value 26 of the storage unit 23 is set. It is remembered.

  That is, as shown in FIG. 5 (C), the first comp / limiter 14 or the second comp / limiter 17 receives the singing voice input from the first or second microphones 12 and 13 in the first voice input state. When the volume level exceeds the threshold TH1 “−15 dB”, the singing volume is compressed to the compression ratio “1: 5” and output to the first microphone amplifier 15 or the second microphone amplifier 18 corresponding to each microphone.

  In addition, the first comp / limiter 14 or the second comp / limiter 17 is in the second voice input state, and the volume level of the singing voice input from the first microphone 12 and the second microphone 13 is the threshold TH2 “−20 dB”. When exceeding, it compresses to compression ratio "1: 5", and outputs it to the 1st microphone amplifier 15 or the 2nd microphone amplifier 18 corresponding to the said each microphone.

  Thus, not only when both the threshold (threshold) and the compression ratio (compression ratio) are changed according to the first and second audio input states, but the compression ratio or the threshold is changed based on the threshold or the compression ratio. It is also possible to achieve the same effects as described above.

  The karaoke system provided with the singing volume adjustment function of the present invention can be used in the field of karaoke equipment manufacturing having a basic karaoke function.

DESCRIPTION OF SYMBOLS 11 Karaoke system 12 1st microphone 13 2nd microphone 14 1st comp / limiter 15 2nd comp / limiter 21 Melody comparison judgment means 22 Comp / limiter control means

Claims (1)

A karaoke system that includes at least a first microphone and a second microphone, and outputs a singing voice input from each microphone to a mixing amplifier via an effector that compresses the volume of the singing voice.
It has a melody comparison judgment means and an effector control means,
The melody comparison determination means acquires singing voice from the first microphone and the second microphone, and when singing voice is simultaneously acquired from both, it compares and determines whether or not both are the same melody,
The effector control means, in the case of both the same melody according to the result of the comparison determination, a volume level threshold value as a starting point for performing volume compression on the input singing voice and a volume compression ratio when the threshold value is exceeded, Changing the setting of at least one of a threshold value lower than the default threshold value for the effector and a volume compression ratio greater than the default volume compression ratio for the effector;
A karaoke system equipped with a singing volume control function.

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