JP2017173704A - Karaoke device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a balance of a volume of a music sound and a volume of a microphone sound and the whole volume, with respect to setting of volumes which is set by a user of a karaoke device, and meanwhile, reduce deterioration of sound quality.SOLUTION: A control part of a karaoke device determines a set value for actually adjusting each output level, based on a designated value which indicates a value of an output level designated by a user, for each of output levels of a microphone volume, a music volume and a main volume. The control part controls so that, a value of a difference between the microphone set value and the music set value becomes equal to a value of a difference between a designated value of the microphone and a designated value of the music, and out of the designated value of the microphone and the designated value of the music, makes the set value corresponding to the smaller designated value match a predetermined lower limit reference value. In addition, the control part determines a set value of the main volume, in a manner in which, change values between the designated values of the microphone and the music, and set values of the microphone and music, are reflected in a contrary direction to the designated value of the main volume.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a technique for adjusting a volume output in a karaoke apparatus.

  Patent Document 1 describes a volume adjustment technique in an audio playback device, in which a digital audio signal is gain-adjusted by a digital gain setting unit, converted to an analog audio signal, and gain-adjusted by an analog gain setting unit for output. Yes.

JP 2010-141571 A

  By the way, in a karaoke apparatus, the process which mixes and outputs the music sound by which the music was performed and the microphone sound input with the microphone is performed. Some karaoke apparatuses of this type are each provided with a volume for adjusting the output level in each of the plurality of sound processing paths, and further provided with a volume for adjusting the output level after the plurality of sound processing paths are mixed.

  Specifically, the output level is individually adjusted by the digital volume provided in each of the sound processing path of the music sound and the sound processing path of the microphone sound. Further, after the music sound and the microphone sound whose output levels are adjusted by the digital volume are mixed, the overall output level is adjusted by one analog volume.

  In the configuration of the karaoke apparatus as described above, the role of adjusting the volume balance between the music sound and the microphone sound is assumed as the use of the digital volume in the previous stage. Also, as an application of the analog volume in the subsequent stage, a role of adjusting the volume level of the entire mixed sound is assumed. However, depending on the user who uses the karaoke apparatus, there are many cases where the digital volume in the previous stage is used when adjusting the volume of the entire sound, regardless of the above assumption. However, if the volume is reduced using the digital volume, the dynamic range of the audio signal is narrowed, and the sound quality of the music sound and the microphone sound may be deteriorated due to bit dropping.

  On the other hand, Patent Document 1 discloses that the overall volume is controlled by controlling the distribution of volume adjustment in the preceding digital gain setting unit (corresponding to digital volume) and the subsequent analog gain setting unit (corresponding to analog volume). It describes that the deterioration of sound quality is reduced while holding. However, the technique of Patent Document 1 does not consider a configuration in which a volume at the previous stage is provided for each of a plurality of sound processing paths such as music sound and microphone sound.

  Therefore, the present disclosure provides a technique for reducing deterioration in sound quality while maintaining the balance between the volume of the music sound and the microphone sound and the overall volume with respect to the volume setting performed by the user of the karaoke apparatus. The purpose is to provide.

  A karaoke apparatus according to an aspect of the present disclosure includes a microphone volume adjustment unit, a music volume adjustment unit, a mixing unit, a main volume adjustment unit, an acquisition unit, a determination unit, and a volume control unit. The microphone volume adjustment unit is configured to adjust a microphone output level, which is an output level of an audio signal based on audio input via the microphone. The music volume control unit is configured to adjust the music output level, which is the output level of the audio signal output from the sound source that generates the performance sound of the karaoke music. The mixing unit is configured to mix two types of audio signals whose output levels are adjusted by the microphone volume adjusting unit and the music volume adjusting unit. The main volume control unit is configured to adjust a main output level that is an output level of the audio signal mixed by the mixing unit.

  The acquisition unit is configured to acquire a specified value representing an output level value specified by the user for each of the microphone output level, the music output level, and the main output level. The determining unit is configured to determine a microphone output setting value, a music output setting value, and a main output setting value based on each designated value acquired by the acquiring unit. The microphone output setting value is a setting value for actually adjusting the microphone output level with respect to the designated value of the microphone output level. The music output setting value is a setting value for actually adjusting the music output level with respect to the specified value of the music output level. The main output set value is a set value for actually adjusting the main output level with respect to the designated value of the main output level.

  Specifically, the determination unit is configured to determine the microphone output setting value and the music output setting value as follows. That is, the difference value between the microphone output setting value and the music output setting value is made equal to the difference value between the specified value of the microphone output level and the specified value of the music output level. In addition, the setting value corresponding to the smaller one of the designated value of the microphone output level and the designated value of the music output level is matched with a lower limit reference value that is a predetermined lower limit value. In addition, the determining unit reflects the change values between the microphone output level and the music output level specified value, the microphone output setting value, and the music output setting value in a direction opposite to the main output level specified value. To determine the main output set value.

  The volume control unit adjusts the output level for each of the microphone volume adjustment unit, the song volume adjustment unit, and the main volume adjustment unit according to the microphone output setting value, the song output setting value, and the main output setting value determined by the determination unit. It is configured as follows.

  In the karaoke device according to the present disclosure, considering that the sound quality deteriorates when the output level of the microphone volume control unit and the music volume control unit is set to be excessively small, among the specified values of the microphone output level and the music output level, The set value that is actually adjusted for the smaller specified value can be determined in accordance with the lower limit reference value. In addition, the microphone output setting value and the music output setting are set such that the difference value between the microphone output setting value and the music output setting value is equal to the difference value between the specified value of the microphone output level and the specified value of the music output level. The value can be determined.

  By doing in this way, deterioration of sound quality can be reduced, maintaining the balance of the volume of a music sound and a microphone sound with respect to the volume setting which the user of a karaoke apparatus performs. In addition, the main output setting value is determined so as to compensate the change value between the specified value of the microphone output level and the music output level, and the microphone output setting value and the music output setting value, thereby maintaining the overall volume. However, it is possible to reduce deterioration of sound quality.

  In the above configuration, the following may be further performed. That is, the determination unit is configured to determine the microphone output setting value and the music output setting value so that at least one of the microphone output setting value and the music output setting value is equal to or greater than the lower limit reference value. For example, if a lower limit reference value is set in advance so that sound quality degradation due to a decrease in output level is not significant, at least one of the microphone output setting value and the music output setting value becomes equal to or higher than the lower limit reference value. By determining as described above, it is possible to effectively reduce deterioration of sound quality.

  In the above configuration, the following may be further performed. That is, the microphone volume adjustment unit is configured to adjust the microphone output level, which is the output level of the digital audio signal generated based on the sound input through the microphone. The music volume control unit is configured to adjust the music output level, which is the output level of the digital audio signal output from the sound source that generates the performance sound of the karaoke music.

  Furthermore, the first conversion unit that converts the digital audio signal whose output level is adjusted in the microphone volume adjustment unit into an analog audio signal, and the digital audio signal whose output level is adjusted in the music volume adjustment unit is converted into an analog audio signal. A second conversion unit. The mixing unit is configured to mix two types of analog audio signals converted by the first conversion unit and the second conversion unit. The main volume control unit is configured to adjust a main output level that is an output level of the analog audio signal mixed by the mixing unit.

  According to such a configuration, it is possible to maintain the balance of the volume of the music sound and the microphone sound in the microphone volume adjusting unit and the music volume adjusting unit that adjust the output level of the digital audio signal. Further, in the main volume control unit that adjusts the output level of the analog audio signal, it is possible to reduce the deterioration of the sound quality while maintaining the entire volume.

  In the above configuration, the following may be further performed. That is, the volume control unit is configured to set the target to be lower than the output level before the adjustment from the target to be higher than the output level before the adjustment among the microphone output setting value, the music output setting value, and the main output setting value determined by the determination unit. Also configured to adjust first. By doing so, it is possible to avoid a sudden increase in volume in the process of adjusting the microphone output level, the music output level, and the main output level, and to reduce the uncomfortable feeling experienced by the user of the karaoke apparatus.

  In addition, this indication is also realizable with the form of the storage medium which memorize | stores the program run in the computer which controls a karaoke apparatus, or a program.

The block diagram showing the structure of a karaoke apparatus. The block diagram showing the structure of an acoustic control part. Explanatory drawing showing an example of a volume setting UI. The flowchart showing the procedure of a volume setting process.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In addition, this indication is not limited to the following embodiment, It is possible to implement in various aspects.
[Description of configuration of karaoke apparatus 10]
As illustrated in FIG. 1, the karaoke apparatus 10 includes a control unit 11, a communication interface unit 12, a storage unit 13, an operation unit 14, and an acoustic control unit 15. In addition, peripheral devices such as a display 16, a microphone 17, and a speaker 18 are connected to the karaoke apparatus 10. The karaoke device 10 is a device having a function of playing karaoke music requested by a user, and is embodied by, for example, a commercial karaoke device installed in a karaoke store.

  The control unit 11 is an information processing apparatus mainly configured with a CPU, RAM, ROM, semiconductor memory such as a flash memory (not shown), an input / output interface, and the like. The function of the control unit 11 is realized by the CPU executing a program stored in a non-transitional physical storage medium such as a ROM or a semiconductor memory. The communication interface unit 12 is a communication device that connects the karaoke apparatus 10 to a network and controls communication via the network. In the present embodiment, the karaoke apparatus 10 communicates with the remote control terminal 20 via the communication interface unit 12.

  The storage unit 13 is a storage device composed of, for example, a hard disk drive or a semiconductor memory. The storage unit 13 stores a karaoke database in which a lot of music data for playing karaoke music is recorded and a program for controlling the operation of the karaoke apparatus 10. The operation unit 14 is an input device for inputting an operation from a user, and includes a touch panel, a key switch, and the like provided in the main body of the karaoke apparatus 10.

  In the present embodiment, it is assumed that a user interface (hereinafter referred to as UI) for individually setting a microphone volume, a music volume, and a main volume is assumed as an application of the operation unit 14. The microphone volume is a volume at which sound input via the microphone 17 is output. The music volume is a volume at which the performance sound of karaoke music is output. The main volume is the overall volume including the sound of the microphone 17 and the performance sound of karaoke music.

  The acoustic control unit 15 is a device that controls voice input / output. A microphone 17 is connected to the input side of the acoustic control unit 15. Thereby, the acoustic control part 15 acquires a user's song voice. A speaker 18 is connected to the output side of the sound control unit 15. Thereby, the sound control unit 15 outputs a sound source signal obtained by mixing the performance sound of the music reproduced in the performance process by the control unit 11 and the user's singing voice to the speaker 18. The speaker 18 outputs the sound source signal output from the sound control unit 15 in place of sound. The display 16 is a display device that displays video based on video data sent from the control unit 11.

  When the control unit 11 receives a music request from a user via the remote control terminal 20, the control unit 11 associates the music number of the music with the requested user's identification information, and is managed in an internal RAM or the like. Register to the list in order of acceptance. The control unit 11 sequentially acquires the music data corresponding to the reserved music according to the performance order registered in the reservation list, and performs the performance processing. Since other functions and configurations of the karaoke apparatus 10 are in accordance with known techniques, detailed description thereof is omitted here.

  The remote control terminal 20 is a remote operation device for the karaoke apparatus 10. The remote control terminal 20 includes a control unit that is an information processing device that controls the operation of the remote control terminal 20, a display that displays information, an operation unit such as a touch panel and a key switch that accepts user input operations, a wireless LAN communication unit, An infrared communication unit (not shown) is provided. By using the remote control terminal 20, the user can browse information related to the karaoke service, select a karaoke piece to be played by the karaoke apparatus 10, perform sound volume setting, and the like. The remote control terminal 20 has, for example, a wireless communication function conforming to a well-known wireless LAN communication standard, and communicates with the karaoke apparatus 10 via a network.

  Next, a detailed configuration of the acoustic control unit 15 of the karaoke apparatus 10 will be described with reference to FIG. As illustrated in FIG. 2, the acoustic control unit 15 includes an A / D conversion unit 151, a microphone volume 152, a music volume 153, two D / A conversion units 154 and 155, a mixer 156, and a main volume 157. Among these units, the A / D conversion unit 151, the microphone volume 152, and the D / A conversion unit 154 constitute an audio processing path for processing an audio signal representing audio input by the microphone 17. On the other hand, the music volume 153 and the D / A conversion unit 155 constitute an audio processing path for processing an audio signal representing the performance sound of the karaoke music reproduced in the control unit 11.

  The A / D conversion unit 151 is an electronic circuit that converts an analog audio signal input from the microphone 17 into a digital audio signal. The microphone volume 152 is a so-called digital volume that adjusts the volume by increasing or decreasing the output level, which is the amplitude of the digital audio signal converted by the A / D converter 151. The microphone volume 152 adjusts the output level of the digital audio signal according to the microphone volume setting value (corresponding to the microphone output setting value in the present disclosure) set in the control unit 11. The D / A converter 154 is an electronic circuit that converts the digital audio signal amplified by the microphone volume 152 into an analog audio signal.

  The music volume 153 is a so-called digital volume that adjusts the volume by increasing / decreasing an output level that is an amplitude of a digital audio signal that is output when the music data is played back by the control unit 11. The music volume 153 adjusts the output level of the digital audio signal according to the music volume setting value (corresponding to the music output setting value in the present disclosure) set in the control unit 11. The D / A converter 155 is an electronic circuit that converts the digital audio signal amplified by the music volume 153 into an analog audio signal.

  The mixer 156 is an electronic circuit that mixes and outputs the analog audio signal (microphone side) output from the D / A converter 154 and the analog audio signal (music side) output from the D / A converter 155. It is. The main volume 157 is a so-called analog volume that adjusts the volume by increasing or decreasing the output level that is the amplitude of the analog audio signal output from the mixer 156. The main volume 157 adjusts the output level of the analog audio signal according to the main volume setting value (corresponding to the main output setting value in the present disclosure) set in the control unit 11. The analog audio signal amplified in the main volume 157 is output as audio from the speaker 18 via the power amplifier.

  The karaoke apparatus 10 is configured such that the user can adjust the volume of each of the microphone volume 152, the music volume 153, and the main volume 157. Specifically, by providing the user with a volume setting UI 200 that is a user interface as illustrated in FIG. 3, the user can input a desired volume as a numerical value. This volume setting UI 200 is embodied as, for example, a GUI (Graphical User Interface) composed of an image linked with a touch panel provided on the display of the remote control terminal 20. Alternatively, it may be embodied as a GUI configured with an image interlocked with the touch panel of the operation unit 14 of the karaoke apparatus 10. Or you may be comprised by the indicator which displays a mechanical button switch and a numerical value etc.

  As illustrated in FIG. 3, the volume setting UI 200 includes a microphone volume designation unit 201, a music volume designation unit 202, and a main volume designation unit 203. Each of these volume designation sections 201, 202, and 203 is provided with a button for increasing / decreasing the designated volume value and a display section that represents the current volume value with a numerical value or a graph. In the present embodiment, it is assumed that the volume can be designated by a numerical value from 0 (minimum volume) to 64 (maximum volume) in each volume designation unit 201, 202, 203. An input value that is a volume value input by the user in the volume setting UI 200 is transmitted to the control unit 11 of the karaoke apparatus 10.

[Description of volume setting process]
The procedure of the volume setting process executed by the control unit 11 of the karaoke apparatus 10 will be described with reference to the flowchart of FIG. This process is a process executed when the karaoke apparatus 10 is operating with the power switch of the karaoke apparatus 10 turned on.

  In S100, the control unit 11 determines whether an instruction to change the volume is received via the volume setting UI 200 (see FIG. 3). When the instruction to change the volume is not accepted (S100: NO), the control unit 11 repeats the process of S100. When the instruction to set the volume is received (S100: YES), the control unit 11 proceeds to S102.

  In S102, the control unit 11 sets “X” as the value obtained by adding the “specified value of the microphone volume” and the “specified value of the main volume”, and the “specified value of the music volume” and the “specified value of the main volume”. The added value is calculated as “Y”. The “specified value of the microphone volume”, “specified value of the music volume”, and “specified value of the main volume” referred to here are the input values input from the user in the volume setting UI 200 by the respective volumes 152, 153, and 153. This is a value converted to a gain value (unit: decibel) at 157. This conversion is performed, for example, based on a given table that defines the correspondence between the volume input value and the output level gain.

  In S104, the control unit 11 calculates the absolute value of the difference between the X value and the Y value calculated in S102 as “Z”. That is, Z is equal to the absolute value of the difference between the specified value of the microphone volume and the specified value of the music volume. In S106, the control unit 11 branches the process depending on whether or not the value of X is greater than or equal to the value of Y. When the value of X is greater than or equal to the value of Y (S106: YES), the control unit 11 proceeds to S108. On the other hand, when the value of X is smaller than the value of Y (S106: NO), the control unit 11 proceeds to S110.

  In S108, which proceeds when the value of X is greater than or equal to the value of Y, the control unit 11 branches the process depending on whether the value of Z calculated in S104 is 6.0 dB or less. The value of 6.0 dB is an output level corresponding to the full scale (that is, the maximum volume) of the digital audio signal handled by the microphone volume 152 and the music volume 153 in the present embodiment.

When the value of Z is 6.0 dB or less in S108 (S108: YES), the control unit 11 proceeds to S112. In S112, the control unit 11 determines a calculation formula used to calculate a volume setting value that is a value for actually adjusting the output level of each of the volumes 152, 153, and 157 as the following formula (1).
Microphone volume setting value = Z (dB)
Music volume setting value = 0.0 (dB)
Main volume setting value = Y (dB) (1)
Here, the microphone volume setting value is a setting value that actually adjusts the output level of the microphone volume 152 with respect to the specified value of the microphone volume specified by the user. The music volume setting value is a setting value for actually adjusting the output level of the music volume 153 with respect to the specified value of the music volume specified by the user. The main volume setting value is a setting value that actually adjusts the output level of the main volume 157 with respect to the specified value of the main volume specified by the user.

  According to the above formula (1), the music volume setting value corresponding to the smaller music volume among the microphone volume specified value and the music volume specified value is set to 0.0 dB. The value of 0.0 dB is a value that is predetermined as a lower limit reference value in a range in which deterioration in sound quality due to a decrease in output level is not significant in the present embodiment. On the other hand, the microphone volume setting value is set to a value of Z (that is, the absolute value of the difference between the microphone volume and the music volume). As a result, the difference between the microphone volume setting value and the music volume setting value becomes equal to the difference between the microphone volume designation value designated by the user and the music volume designation value. That is, the volume balance in the microphone volume setting value and the music volume setting value set here is equal to the volume balance in the microphone volume specified value and the music volume specified value specified by the user, and the volume balance. Is maintained.

  Further, the main volume setting value is set to a value of Y (that is, a specified value of the music volume + a specified value of the main volume). This corresponds to a value obtained by adding a change value when the music volume setting value is changed to 0.0 dB with respect to the specified value of the music volume in a direction opposite to the specified value of the main volume. As a result, the overall volume at the designated value of the main volume designated by the user is maintained.

On the other hand, when the value of Z is larger than 6.0 dB in S108 (S108: NO), the control unit 11 proceeds to S114. In S <b> 114, the control unit 11 determines a calculation formula used to calculate a volume setting value that is a value for actually adjusting the output level of each of the volumes 152, 153, 157 as the following formula (2).
Microphone volume setting value = 6.0 (dB)
Music volume setting value = 6.0−Z (dB)
Main volume setting value = X−6.0 (dB) (2)
According to the above formula (2), the microphone volume setting value corresponding to the larger microphone volume among the microphone volume specified value and the music volume specified value is set to 6.0 dB. The value of 6.0 dB is an output level corresponding to the full scale (that is, the maximum volume) of the digital audio signal in the present embodiment. On the other hand, the music volume setting value is set to a value of 6.0-Z. As a result, the difference between the microphone volume setting value and the music volume setting value becomes equal to the difference between the microphone volume designation value designated by the user and the music volume designation value.

  In the case where the above formula (2) is applied, the difference between the specified value of the microphone volume and the specified value of the music volume is larger than 6.0 dB of the full scale, so the larger microphone volume setting value is the upper limit of 6. It is set to 0 dB. In addition, in order to maintain the balance between the microphone volume setting value and the music volume setting value, and to reduce the deterioration of sound quality as much as possible, the smaller music volume setting value can be set to 0.0 dB, which is the lower limit reference value. It is set to be as close as possible.

  The main volume setting value is set to a value of X-6.0. This corresponds to a value obtained by adding a change value when the microphone volume setting value is changed to 6.0 dB with respect to the specified value of the microphone volume in a direction opposite to the specified value of the main volume. As a result, the overall volume at the designated value of the main volume designated by the user is maintained.

  On the other hand, in S <b> 110 that proceeds when it is determined in S <b> 106 that the value of X is smaller than the value of Y, the control unit 11 determines whether the value of Z calculated in S <b> 104 is 6.0 dB or less. To branch processing.

If the value of Z is 6.0 dB or less in S110 (S110: YES), the control unit 11 proceeds to S116. In S116, the control unit 11 determines a calculation formula used to calculate a volume setting value, which is a value for actually adjusting the output level of each of the volumes 152, 153, and 157, as the following formula (3).
Microphone volume setting value = 0.0 (dB)
Music volume setting value = Z (dB)
Main volume setting value = X (dB) (3)
According to the above equation (3), the microphone volume setting value corresponding to the smaller microphone volume of the microphone volume specified value and the music volume specified value is set to 0.0 dB, which is the lower limit reference value. On the other hand, the music volume setting value is set to a value of Z (that is, the absolute value of the difference between the microphone volume and the music volume). As a result, the difference between the microphone volume setting value and the music volume setting value becomes equal to the difference between the microphone volume designation value designated by the user and the music volume designation value. That is, the volume balance in the microphone volume setting value and the music volume setting value set here is equal to the volume balance in the microphone volume specified value and the music volume specified value specified by the user, and the volume balance. Is maintained.

  Also, the main volume setting value is set to a value of X (that is, a specified value of the microphone volume + a specified value of the main volume). This corresponds to a value obtained by adding a change value when the microphone volume setting value is changed to 0.0 dB with respect to the specified value of the microphone volume in a direction opposite to the specified value of the main volume. As a result, the overall volume at the designated value of the main volume designated by the user is maintained.

On the other hand, when the value of Z is larger than 6.0 dB in S110 (S110: NO), the control unit 11 proceeds to S118. In S118, the control unit 11 determines a calculation formula used to calculate a volume setting value that is a value for actually adjusting the output level of each of the volumes 152, 153, and 157 as the following formula (4).
Microphone volume setting value = 6.0−Z (dB)
Music volume setting value = 6.0 (dB)
Main volume setting value = Y−6.0 (dB) Expression (4)
According to the above equation (4), the music volume setting value corresponding to the larger music volume among the specified value of the microphone volume and the specified value of the music volume is set to 6.0 dB corresponding to the full-scale volume level. The On the other hand, the microphone volume setting value is set to a value of 6.0-Z. As a result, the difference between the microphone volume setting value and the music volume setting value becomes equal to the difference between the microphone volume designation value designated by the user and the music volume designation value.

  In the case where the above formula (4) is applied, the difference between the specified value of the microphone volume and the specified value of the music volume is larger than 6.0 dB of the full scale, so the larger music volume setting value is the upper limit of 6. It is set to 0 dB. In addition, in order to maintain the balance between the microphone volume setting value and the music volume setting value and reduce the deterioration of sound quality as much as possible, the smaller microphone volume setting value can be set to 0.0 dB, which is the lower limit reference value. It is set to be as close as possible.

  The main volume setting value is set to a value of Y-6.0. This corresponds to a value obtained by adding a change value when the music volume setting value is changed to 6.0 dB with respect to the specified value of the music volume in a direction opposite to the specified value of the main volume. As a result, the overall volume at the designated value of the main volume designated by the user is maintained.

  In S120, the control unit 11 calculates the microphone volume setting value, the music volume setting value, and the main volume setting value according to the calculation formula determined in any of S112, S114, S116, and S118 described above. In S122, the controller 11 sets the microphone volume setting value, the music volume setting value, and the main volume setting value calculated in S122 to values corresponding to binary data that can be set in the volumes 152, 153, and 157, respectively. Convert to Here, when the calculated values of the microphone volume setting value, the music volume setting value, and the main volume setting value are values that do not correspond to the settable binary data, for example, the values are shifted to close settable values. Also, if the calculated value of the volume setting value is a numerical value equal to or less than mute, it is set to mute.

  In S124, the control unit 11 determines the order of volume adjustment for each of the volumes 152, 153, and 157. Specifically, among the volumes 152, 153, and 157, the control unit 11 sets the target for performing the process of lowering the output level from the volume setting value at the time before the change to the target for performing the process of increasing the output level. Determine the order to adjust to.

  In S126, the control unit 11 outputs the output levels to the volumes 152, 153, and 157 in the order determined in S124 according to the microphone volume setting value, the music volume setting value, and the main volume setting value converted in S122. Control is performed to sequentially change. On the other hand, the microphone volume 152, the music volume 153, and the main volume 157 change the output level according to the respective volume setting values instructed by the control unit 11.

  In S128, the control part 11 determines whether the instruction | indication which turns off the power switch of the karaoke apparatus 10 was received. When the instruction to turn off the power switch is not received (S128: NO), the control unit 11 returns to S100. On the other hand, when an instruction to turn off the power switch is received (S128: YES), the control unit 11 ends the volume setting process.

[effect]
According to the karaoke apparatus 10 of the embodiment, the following effects can be obtained.
The control unit 11 sets the difference value between the microphone volume setting value and the music volume setting value to be equal to the difference value between the microphone volume specified value and the music volume specified value specified by the user, and The microphone volume setting is set so that the volume setting value that is actually adjusted with respect to the smaller specified value of the specified value of the microphone volume and the specified value of the music volume is as close as possible to the lower limit reference value of 0.0 dB. Value and music volume setting value.

  Further, the control unit 11 determines the microphone volume setting value and the music volume setting value so that at least one of the microphone volume setting value and the music volume setting value is equal to or higher than the lower limit reference value. Further, the lower limit reference value is determined in advance as a value in a range where deterioration of sound quality due to a decrease in output level is not significant.

  By doing so, it is possible to reduce deterioration in sound quality while maintaining the balance of the volume of the music sound and the microphone sound with respect to the volume setting performed by the user. Also, by determining the main volume setting value so as to compensate for the change value between the specified value of the microphone volume and the music volume and the microphone volume setting value and the music volume setting value, the sound quality is maintained while maintaining the overall volume. Can be reduced.

  In addition, the control unit 11 adjusts, among the volumes 152, 153, and 157, the target for performing the process for lowering the output level from the volume setting value at the time before the change before the target for performing the process for increasing the output level. It is configured to determine the order. By doing so, it is possible to avoid sudden increase in volume in the process of adjusting the microphone volume, music volume, and main volume, and to reduce the uncomfortable feeling experienced by the user.

[Correspondence with configuration described in claims]
The correspondence between each configuration of the embodiment and the configuration described in the claims is as follows.
The microphone volume 152 corresponds to a microphone volume adjustment unit. The music volume 153 corresponds to a music volume control unit. The D / A conversion unit 154 corresponds to the first conversion unit. The D / A conversion unit 155 corresponds to a second conversion unit. The mixer 156 corresponds to a mixing unit. The main volume 157 corresponds to the main volume control unit. The process in which the control unit 11 acquires the input value of each volume via the volume setting UI 200 and converts it into the output level gain value corresponds to the process as the acquisition unit. The processing of S102 to S122 executed by the control unit 11 corresponds to the processing as the determination unit. The processing of S124 and S126 executed by the control unit 11 corresponds to processing as a volume control unit.

[Modification]
The functions of one component in each of the above embodiments may be shared by a plurality of components, or the functions of a plurality of components may be exhibited by one component. Moreover, you may abbreviate | omit a part of structure of each said embodiment. In addition, at least a part of the configuration of each of the above embodiments may be added to or replaced with the configuration of the other above embodiments. It should be noted that all aspects included in the technical idea specified from the words described in the claims are embodiments of the present disclosure.

  For example, in the above-described embodiment, the case where the digital volume is applied as the microphone volume 152 and the music volume 153 and the analog volume is applied as the main volume 157 has been described. For example, the present disclosure can be applied to a configuration in which an analog volume is applied as a microphone volume or a music volume, and a configuration in which a digital volume is applied as a main volume.

  In addition, the present disclosure can be realized in various forms such as a program for causing a computer to function as the control unit 11 of the karaoke apparatus 10 described above and a non-transitional actual recording medium such as a semiconductor memory in which the program is recorded. .

  DESCRIPTION OF SYMBOLS 10 ... Karaoke apparatus, 11 ... Control part, 12 ... Communication interface part, 13 ... Memory | storage part, 14 ... Operation part, 15 ... Sound control part, 16 ... Display, 17 ... Microphone, 18 ... Speaker, 20 ... Remote control terminal, 151 ... A / D converter, 152 ... microphone volume, 153 ... music volume, 154,155 ... D / A converter, 156 ... mixer, 157 ... main volume.

Claims (5)

A microphone volume control unit configured to adjust a microphone output level, which is an output level of an audio signal based on sound input through the microphone;
A music volume control unit configured to adjust a music output level that is an output level of an audio signal output from a sound source that generates a performance sound of karaoke music;
A mixing unit configured to mix two kinds of the audio signals whose output levels are adjusted in the microphone volume adjusting unit and the music volume adjusting unit;
A main volume control unit configured to adjust a main output level which is an output level of an audio signal mixed by the mixing unit;
An acquisition unit configured to acquire a specified value representing a value of an output level specified by a user for each of the microphone output level, the music output level, and the main output level;
Based on each specified value acquired by the acquisition unit, a microphone output setting value that is a setting value for actually adjusting the microphone output level, and a music output setting value that is a setting value for actually adjusting the music output level; A determination unit configured to determine a main output set value that is a set value for actually adjusting the main output level;
According to the microphone output setting value, the music output setting value, and the main output setting value determined by the determining unit, the output level is adjusted for each of the microphone volume adjusting unit, the music volume adjusting unit, and the main volume adjusting unit. A volume control unit configured,
The determination unit
The microphone output level is set such that a difference value between the microphone output setting value and the music output setting value is equal to a difference value between the specified value of the microphone output level and the specified value of the music output level. Among the designated value and the designated value of the music output level, the set value corresponding to the smaller designated value is matched with a lower limit reference value which is a predetermined lower limit value, and the microphone output set value and the A music output setting value is determined, and a change between the microphone output level and the music output level specified value and the microphone output setting value and the music output setting value with respect to the main output level specified value A karaoke apparatus configured to determine the main output set value by reflecting values in opposite directions. The karaoke apparatus according to claim 1,
The determining unit is configured to determine the microphone output setting value and the music output setting value so that at least one of the microphone output setting value and the music output setting value is equal to or greater than the lower limit reference value. There is a karaoke device. In the karaoke apparatus according to claim 1 or claim 2,
The microphone volume adjustment unit is configured to adjust a microphone output level, which is an output level of a digital audio signal generated based on sound input via a microphone,
The music volume adjusting unit is configured to adjust a music output level that is an output level of a digital audio signal output from a sound source that generates a performance sound of karaoke music,
A first conversion unit that converts a digital audio signal whose output level is adjusted in the microphone volume adjustment unit into an analog audio signal;
A second conversion unit for converting the digital audio signal whose output level is adjusted in the music volume adjustment unit into an analog audio signal;
The mixing unit is configured to mix two types of analog audio signals converted in the first conversion unit and the second conversion unit,
The karaoke apparatus, wherein the main volume adjustment unit is configured to adjust a main output level that is an output level of an analog audio signal mixed by the mixing unit. The karaoke apparatus according to any one of claims 1 to 3,
The volume control unit is configured such that, among the microphone output setting value, the music output setting value, and the main output setting value determined by the determination unit, a target that is lower than the output level before adjustment is higher than a target that is higher than the output level before adjustment. The karaoke device is also configured to adjust first. A microphone volume control unit configured to adjust a microphone output level, which is an output level of an audio signal based on sound input through the microphone;
A music volume control unit configured to adjust a music output level that is an output level of an audio signal output from a sound source that generates a performance sound of karaoke music;
A mixing unit configured to mix two kinds of the audio signals whose output levels are adjusted in the microphone volume adjusting unit and the music volume adjusting unit;
A main volume control unit configured to adjust a main output level which is an output level of an audio signal mixed by the mixing unit;
A program executed by a computer that controls a karaoke device comprising:
For each of the microphone output level, the music output level, and the main output level, an acquisition procedure for acquiring a designated value that represents a value of an output level designated by a user;
Based on each specified value acquired in the acquisition procedure, a microphone output setting value that is a setting value for actually adjusting the microphone output level, and a music output setting value that is a setting value for actually adjusting the music output level; A determination procedure for determining a main output setting value, which is a setting value for actually adjusting the main output level;
Volume control for adjusting the output level for each of the microphone volume adjustment unit, the song volume adjustment unit, and the main volume adjustment unit according to the microphone output setting value, the song output setting value, and the main output setting value determined in the determination procedure Have procedures,
The determination procedure is as follows:
The microphone output level is set such that a difference value between the microphone output setting value and the music output setting value is equal to a difference value between the specified value of the microphone output level and the specified value of the music output level. Among the designated value and the designated value of the music output level, the set value corresponding to the smaller designated value is matched with a lower limit reference value which is a predetermined lower limit value, and the microphone output set value and the A music output setting value is determined, and a change between the microphone output level and the music output level specified value and the microphone output setting value and the music output setting value with respect to the main output level specified value A program configured to determine the main output set value by reflecting values in opposite directions.

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