JP2019161546A - Acoustic controller, and acoustic control method - Google Patents

Abstract

To provide an acoustic controller and an acoustic control method capable of reducing stress on user, by restraining sound volume change to an unintended magnitude, when performing sound volume adjustment by remote operation.SOLUTION: In an acoustic control system configuration, an acoustic controller has a command server for analyzing the command of sound volume control inputted externally, and outputting an operation signal for a broadcast receiver 1 (acoustic control apparatus) becoming control object, and a control section 10 for determining the volume value after change on the basis of the operation signal, comparing the current volume value of the broadcast receiver 1 with the volume value after change, and when the volume value after change is larger than the volume maximum value thus set, or when the finite difference of the current volume value and the volume value after change is larger than a set volume change width maximum value, resetting the volume value after change.SELECTED DRAWING: Figure 2

Description

  The present embodiment relates to an acoustic control device and an acoustic control method.

  In recent years, as various devices are connected to the Internet and an IoT (Internet of Things) is progressing, cases where the devices operate in cooperation with each other are increasing. In particular, since a speaker (hereinafter referred to as an AI speaker) having a wireless communication connection function equipped with an AI function and a voice operation assistant function (hereinafter referred to as an AI speaker) has been put into practical use, a device connected via the Internet using the AI speaker is used. The situation to operate is increasing.

  For example, if an AI speaker is used, operations that have been performed using a remote control, such as turning on / off the device and adjusting the volume, can be performed remotely with hands-free operation, which is very convenient for the user. Will improve.

  However, on the other hand, when remote control is performed from another device such as an AI speaker, the user often performs an operation without actually looking at the device to be controlled, and thus the user may make an erroneous operation (input an incorrect instruction). . Moreover, there is a possibility that an unintended operation may be caused by an erroneous operation of the AI speaker or a trouble in the middle of the instruction transmission path.

  For example, when the volume adjustment of an audio device (speaker) built in a broadcast receiving device or the like is to be controlled by the voice recognition function of another device such as an AI speaker, the volume is increased to a very high volume due to erroneous voice recognition. There was a problem of becoming.

JP 2017-175397 A

  This embodiment suppresses a change in volume to an unintended volume when performing volume control by remote operation, and can reduce stress on the user and an acoustic control method. The purpose is to provide.

  The acoustic control apparatus according to the present embodiment analyzes a volume control command input from the outside, outputs a manipulation signal to the acoustic control device to be controlled, and changes the volume value based on the manipulation signal. Determining, comparing the current volume value of the acoustic control device with the changed volume value, and whether the changed volume value is greater than a set maximum volume value or the difference between the changed volume value and the current volume value A volume control unit that resets the changed volume value when is larger than the set maximum volume change amount.

Schematic which shows an example of the acoustic control system structure using the acoustic control apparatus concerning this embodiment. The block diagram which shows the structure of the broadcast receiver which is an example of the acoustic control apparatus which concerns on embodiment. The flowchart explaining an example of the setting method of a volume maximum value and a volume change width maximum value. The flowchart explaining an example of the acoustic control method concerning this embodiment. 6 is a flowchart for explaining an example of a method for determining whether or not volume change is possible. The flowchart explaining an example of the method of resetting the volume after a change. The flowchart explaining another example of the acoustic control method concerning this embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a schematic diagram illustrating an example of a configuration of an acoustic control system using the acoustic control device according to the present embodiment. The acoustic control device 100 includes an acoustic control device 1 and a command server 1a. A speaker 200 with a microphone is connected to the command server 1a via the Internet line 400 and the voice recognition server 300.

  The sound control device 1 is configured such that the volume of the built-in sound device can be adjusted by an external control instruction. Hereinafter, a broadcast receiving apparatus will be described as an example of the acoustic control device 1. The broadcast receiving device 1 that is an acoustic control device includes a control unit 10. The control unit 10 may be configured by a processor using a CPU or the like, and may operate by using the RAM 10b according to a program stored in the ROM 10a to control each unit, or may have a function by a hardware electronic circuit. You may implement | achieve part or all. The control unit 10 is also provided with a nonvolatile memory 10c. The non-volatile memory 10c stores a preset maximum volume value Vh and maximum volume change width value Vcl. The nonvolatile memory 10c stores various types of information extracted from broadcast signals described later. FIG. 2 is a block diagram illustrating a configuration of a broadcast receiving apparatus which is an example of a volume control device according to the embodiment.

  The antenna 21 receives an advanced BS broadcast and an advanced broadband CS broadcast (hereinafter referred to as an advanced broadband broadcast) and supplies an advanced broadband broadcast signal to the input terminal 2 a of the broadcast receiving apparatus 1. The advanced broadband broadcast signal input to the input terminal 2a is supplied to the tuner unit Tu.

  The tuner unit Tu has a plurality of tuners Tu1, Tu2,... (Hereinafter referred to as tuner Tun). The tuner Tun is controlled by the control unit 10 to select a broadcast signal of a desired channel from the input high-broadband broadcast signals, and outputs the selected signal to the signal processing unit 3. The signal processing unit 3 demodulates the input broadcast signal.

  In the example of FIG. 2, only one antenna 21 corresponding to one advanced wideband broadcast is shown, but an antenna corresponding to terrestrial digital broadcast, BS broadcast, and CS broadcast is provided, and a signal from each antenna is supplied to the tuner unit Tu. It may be like this. In this case, the signal processing unit 3 performs demodulation corresponding to the modulation scheme of each broadcast. Thereby, the signal processing unit 3 obtains a stream of each broadcast signal. Note that FIG. 2 shows an example in which each broadcast signal is input via an antenna, but the transmission path of the broadcast signal is not particularly limited, and IP broadcasts received via the Internet line, not via the antenna, It may be received via a cable television broadcasting network.

  For example, for an advanced broadband broadcast signal, a TLV (Type Length Value) stream is obtained by demodulation of the signal processing unit 3. The signal processing unit 3 separates the IP packet included in the TLV stream, and includes video data, audio data, caption data, character superimposition, application data, ECM (Entitlement Control Message), EMM (Entitlement Management Message) included in the IP packet. ) Are extracted.

  Further, the signal processing unit 3 extracts a transport stream (a transport stream multiplexed according to the MPEG-2 Systems standard) by a demodulation process for a current broadcast signal such as a terrestrial digital broadcast signal. The signal processing unit 3 extracts video data and audio data from the transport stream, and extracts various messages including ECM and EMM.

  The broadcast receiving apparatus 1 is provided with a CAS module 15. The CAS module 15 is used for controlling the conditional access system. The CAS module 15 may be configured to be mounted on a chip built in the broadcast receiving apparatus 1, or may be configured by a board in which the CAS module is incorporated, and is provided in a slot (not shown) provided in the broadcast receiving apparatus 1. It is also conceivable that the conditional access function is realized by inserting the board. In addition, the CAS module 15 has both the limited reception function of the advanced broadband broadcast and the limited reception function of the current broadcast, or has only the limited reception function of the advanced broadband broadcast. In some cases, it is realized by a CAS card as the IC card 23.

  The signal processing unit 3 performs decoding processing on the extracted video and audio of each broadcasting system, and then performs predetermined signal processing to obtain video data and audio data. The signal processing unit 3 gives video data and audio data to the graphic processing unit 4 or the audio processing unit 7, respectively, and gives other data to the control unit 10.

  The OSD signal generation unit 5 generates image information (OSD signal) for superimposing display based on the information given from the control unit 10 and supplies it to the graphic processing unit 4. The graphic processing unit 4 manages digital video data from the signal processing unit 3 and window drawing based on a GUI (Graphical User Interface) from the OSD signal generation unit 5, and broadcasts data on an image based on the video data. And an image based on GUI or the like are superimposed, and the superimposed image is sent to the video processing unit 6.

  For example, in addition to video data, the graphic processing unit 4 is provided with various data for acquiring a program, electronic program guide (EPG) information, program attribute information, subtitle information, and the like. Image generation processing can be performed to display EPG, subtitles, and the like based on the information.

  The video processing unit 6 is controlled by the control unit 10 to convert the digital video signal from the graphic processing unit 4 into a format (number of pixels, frame frequency, scanning method) that can be displayed on the video display unit 8, or display color. Are arbitrarily adjusted and output to the video display unit 8. Thereby, a video can be displayed on the display screen of the video display unit 8.

  The audio processing unit 7 converts the digital audio data from the signal processing unit 3 into an analog audio signal that can be reproduced by the speaker 9, and then outputs the analog audio signal to the speaker 9 to reproduce the audio. When the broadcast receiving apparatus is a set top box or the like, it is not necessary to include the video display unit 8 and the speaker 9.

  The broadcast receiving apparatus 1 is provided with a card interface (I / F) 13, a communication I / F 16, a USB I / F 17, and an HDMII / F 18. The card I / F 13 enables transmission / reception of data between the IC card 23 mounted on the card holder 14 and the control unit 10. For example, when a CAS card (hereinafter referred to as a B-CAS card) corresponding to the current digital broadcast is adopted as the IC card 23, the card I / F 13 transmits / receives data related to the descrambling of the current broadcast.

  The communication I / F 16 is an interface corresponding to a predetermined communication path such as a telephone line or a LAN. It is connected to the command server 1a via the terminal 2b, and enables data transmission / reception between the external device and the control unit 10 via the command server 1a. An operation signal such as volume change can be input from the command server 1 a via the communication I / F 16, and the communication I / F 16 outputs the received operation signal to the control unit 10.

  The control unit 10 as a sound control unit controls each unit of the broadcast receiving device 1 based on an operation signal input from the command server 1a via the communication I / F 16. For example, when an operation for increasing the volume is performed, the control unit 10 verifies the validity of the input volume change operation, and then generates an appropriate volume change instruction signal to the voice processing unit 7. Output. The voice processing unit 7 performs a volume change process according to the volume change instruction signal.

  The HDMII / F 18 is an interface corresponding to the HDMI (registered trademark) standard, is connected to an external device (not shown) via the terminal 2d, receives an HDMI (registered trademark) signal from the external device, and controls the control unit 10. Or an HDMI (registered trademark) signal from the control unit 10 can be output to an external device via the terminal 2d.

  The USB I / F 17 is an interface compatible with the USB standard, and is connected to a USB compatible device such as the HDD 24 via the terminal 2 c to enable data transmission / reception between the USB compatible device and the control unit 10. For example, when the HDD 24 is connected to the terminal 2c, the control unit 10 can give video data to the HDD 24 via the USB I / F 17 and the terminal 2c for recording.

  When the recording unit is configured by an HDD, an optical disc disk drive, an SD (registered trademark) card reader / writer, etc. (not shown) built in the broadcast receiving apparatus 1, the control unit 10 records a broadcast program signal in each of these recordings. It is also possible to record in the section.

  For example, when recording of a broadcast program is specified by the user, the control unit 10 stores the descrambled program data (video and audio data) acquired by the signal processing unit 3 in the HDD 24 via the USB I / F 17. It can be given and recorded. The control unit 10 can execute recording of a broadcast program even in a standby state (function standby state).

  The broadcast receiving apparatus 1 is provided with an operation unit 11 and a receiving unit 12. The operation unit 11 includes switches, keys, buttons, and the like (not shown), and outputs an operation signal based on a user operation to the control unit 10. The receiving unit 12 receives an operation signal based on a user operation from the remote controller 22 and outputs the received operation signal to the control unit 10. The control unit 10 controls each unit of the broadcast receiving device 1 based on operation signals from the operation unit 11 and the reception unit 12. For example, when an operation for designating a reception channel number is performed by the remote controller 22 using an up / down key, a one-touch channel selection key, or the like, each tuner Tun selects a channel according to an operation signal from the reception unit 12. Perform the action.

  The operation unit 11 and the remote controller 22 are provided with a power switch (not shown) for turning on / off the power of the broadcast receiving apparatus 1. The broadcast receiving apparatus 1 is provided with a power supply circuit (not shown) for supplying power to each unit, and the control unit 10 controls the power supply to each unit by operating a power switch, It is set to the state.

  In the standby state, at least the graphic processing unit 4, the OSD signal generation unit 5, the video processing unit 6, the audio processing unit 7, the video display unit 8 and the speaker 9 shown in FIG. However, the user cannot view the broadcast program. When this embodiment is applied to a decoder that receives advanced broadband broadcasting and outputs video and audio, the standby state means a video and audio data output stop state.

  In the standby state, the control unit 10 can realize various functions as follows, for example. For example, even in the standby state, the control unit 10 supplies power to a circuit necessary for receiving download content information by its own timer based on the notification information, downloads the download content, and stands at the end of the download. It has a power control function to turn off the raised power. In addition, even when the power switch is turned off and the controller 10 shifts to a standby state, the control unit 10 maintains energization of necessary circuits, downloads download contents, and turns off the power when the download ends. It has a function.

  Moreover, the control part 10 can also perform the operation | movement similar to the electricity supply control function mentioned above for EMM acquisition.

  The control unit 10 can acquire EPG information by channel search in the standby state.

  In addition, the control unit 10 receives the TMCC in the standby state, and monitors the emergency information descriptor (MH) in the MPT of the reception channel even when the activation control bit of the TMCC is 1, so that the emergency warning broadcast (EWS) Can be received.

  Moreover, the control part 10 can perform various reservation operation | movement (program reservation etc.) by a receiver.

  The command server 1a receives an operation signal to the broadcast receiving apparatus 1 input from the outside via the Internet line 400. The instruction contents, parameters, and the like of the received operation signal are interpreted, converted into a format that can be processed by the broadcast receiving apparatus 1, and output. The operation signal output from the command server 1a is input to the control unit 10 of the broadcast receiving apparatus 1 via the terminal 2b and the communication I / F 16.

  The speaker 200 with a microphone is a speaker having a network connection function and a voice operation assistant function. When a voice command issued from the user is input, the voice command is output to the voice recognition server 300. In addition to outputting voice commands from the user to the voice recognition server 300, data input from the voice recognition server 300 can be output as voice.

  The speech recognition server 300 performs language analysis on the speech command input from the speaker 200 with a microphone, and identifies the operation content and the operation target intended by the speech command. For example, when the user inputs a voice command “Turn up the volume of the television” to the speaker 200 with a microphone, the voice recognition server 300 indicates that the operation content is “Raise the volume” by language analysis, and the operation target is It identifies “TV (= broadcast receiving device 1)”. Then, the operation content is output as an operation instruction signal to the operation target device or the device that controls the operation target device.

  In the case of the example shown in FIG. 1, when an operation instruction for the broadcast receiving apparatus 1 is input as a voice command from the microphone-equipped speaker 200, the voice recognition server 300 sends the broadcast receiving apparatus to the command server 1 a via the Internet line 400. 1, the operation instruction content is output as an operation instruction signal.

  Next, the acoustic control method in this embodiment will be described. As a preliminary work for accepting remote operation from the outside, first, the volume maximum value Vh and the volume change width maximum value Vcl are set in the broadcast receiving apparatus 1. The setting operation will be described with reference to FIG. FIG. 3 is a flowchart for explaining an example of a method for setting the maximum volume value and the maximum volume change width.

  First, the user turns on the power of the broadcast receiving apparatus 1 and displays a setting menu screen for setting the maximum volume value and the maximum volume change width on the video display unit 8 using the remote controller 22 or the like. It is made to be on the screen (S1).

  Next, the volume maximum value Vh and the volume change width maximum value Vcl are input using the remote controller 22 or the like (S2). The maximum volume value Vh is selected from values within the range up to the maximum volume that can be output by the broadcast receiving apparatus 1. For example, when the volume can be set from 0 to 100, the volume maximum value Vh is selected (or input) a value of 100 or less. Also, the maximum volume change width Vcl is selected from a value within the range up to the maximum volume that can be output by the broadcast receiving apparatus 1.

  Finally, by pressing a save button or the like displayed on the screen, the value set in S2 is written in the nonvolatile memory 10c (S3).

  When the default volume maximum value Vh and the volume change width maximum value Vcl are registered in advance in the nonvolatile memory 10c at the time of product shipment or the like, the volume maximum value and the volume change width are set by the user. If the maximum value is not set, these default values can be used.

  In addition, when the default value is not set and the setting is not performed by the user, the maximum volume that can be set by the broadcast receiving apparatus 1 is set to the volume maximum value Vh, and the minimum volume is subtracted from the maximum volume that can be set. The value is set to the maximum volume change width Vcl. For example, when the volume can be set from 0 to 100, the maximum volume value Vh = 100 and the maximum volume change width Vcl = 100 (= 100-0).

  Next, the acoustic control method in this embodiment will be described. A method for increasing the volume of the broadcast receiving apparatus 1 by remote operation in response to a voice instruction from the user will be described with reference to FIG. FIG. 4 is a flowchart for explaining an example of the acoustic control method according to this embodiment.

  First, the user inputs an instruction to increase the volume of the broadcast receiving apparatus 1 to the speaker 200 with a microphone by voice (S11). For example, the user issues a voice command such as “Raise the volume of the television” toward the speaker 200 with a microphone. The microphone-equipped speaker 200 outputs the inputted voice command to the voice recognition server 300 as voice data (S12).

  The voice recognition server 300 analyzes the input voice data and analyzes the user's intention (S13). Specifically, the operation content is determined by analyzing the audio data, and the device to be operated is determined. For example, when the voice data “Turn up the volume of the television” is input, it is determined that the operation content is to increase the volume, and the device to be operated is determined to be the broadcast receiving apparatus 1.

  Subsequently, the voice recognition server 300 outputs the analysis result to the command server 1a via the Internet line 400 (S14). Note that the output destination of the analysis result is selected according to the operation target device determined in S13. When the operation target is the broadcast receiving apparatus 1, the command server 1a for inputting an operation signal to the broadcast receiving apparatus 1 is selected.

  The command server 1a identifies the content and parameters of the operation and the operation target device based on the analysis result input from the voice recognition server 300. When it is identified that the operation target device is the broadcast receiving device 1 and the operation content is to increase the volume, an operation signal in a format that can be processed by the broadcast receiving device 1 that is the volume control device is generated and output (S15). . The operation signal output from the command server 1a is input to the control unit 10 of the broadcast receiving apparatus 1 via the terminal 2b and the communication I / F 16.

  In the broadcast receiving apparatus 1, the control unit 10 checks the validity when the volume is controlled based on the operation signal input from the command server 1a (S16). Specifically, when an instruction to increase the volume is input, it is determined whether or not the changed volume Vo exceeds a set volume maximum value Vh. Further, it is also determined whether or not the volume change amount Vc from the current volume Vp exceeds the set maximum change value Vcl. A specific check procedure in S16 will be described with reference to FIG.

  FIG. 5 is a flowchart for explaining an example of a method for determining whether or not the sound volume can be changed. First, the current volume value Vp stored in the nonvolatile memory 10c is acquired (S21). Next, it is determined whether or not the changed volume value Vo is input from the command server 1a (S22). In S1 of FIG. 4, when the user designates a specific volume and inputs an instruction to increase the volume to the speaker with microphone 200, an operation output from the command server 1a to the broadcast receiving apparatus 1 in S15. The signal also includes the changed volume value Vo. When the changed volume value Vo is input (S22, YES), the changed volume value Vo is compared with the set volume maximum value Vh (S23).

  On the other hand, if the changed volume value Vo is not included in the operation signal output from the command server 1a to the broadcast receiving apparatus 1 (S22, NO), whether or not the volume change amount Vc is input from the command server 1a. Is determined (S24). In S <b> 1 of FIG. 4, when the user specifies a specific volume change amount and inputs an instruction to increase the volume to the speaker 200 with a microphone, for example, “Raise the volume of the TV by 10” or the like. When a voice instruction is input, the operation signal output from the command server 1a to the broadcast receiving apparatus 1 in S15 includes the volume change amount Vc.

  When the volume change amount Vc has been input (S24, YES), the volume change amount Vc is added to the current volume value Vp to calculate the changed volume value Vo (S26). On the other hand, when the volume change amount Vc is not input (S24, NO), the volume value Vo after change is calculated by adding the preset volume change setting amount Vcd to the current volume value Vp (S25). . Note that the volume change set amount Vcd is a value (specified value) used for volume control when only an instruction to change the volume is input and no change condition is input. Similar to the maximum volume value Vh and the maximum volume change width value Vcl, it is stored in advance in the nonvolatile memory 10c.

  After calculating the changed volume value Vo in S25 or S26, the changed volume value Vo is compared with the set maximum volume value Vh (S23). When the changed volume value Vo is larger than the maximum volume value Vh (S23, YES), it is determined that the check result is NG (S29), and the series of check procedures is terminated.

  On the other hand, when the changed volume value Vo is equal to or less than the maximum volume value Vh (S23, NO), the volume change width is compared with the set volume change width maximum value Vcl (S27). Note that the volume change range is calculated by subtracting the current volume value Vp from the changed volume value Vo. When the volume change width is larger than the set volume change width maximum value Vcl (S27, YES), it is determined that the check result is NG (S29), and the series of check procedures is terminated.

  On the other hand, if the volume change width is equal to or smaller than the set volume change width maximum value Vcl (S27, NO), it is determined that the check result is OK (S28), and the series of check procedures is terminated.

  Returning to the procedure of FIG. 4, if the check result is OK (S17, YES), the control unit 10 changes the volume of the speaker 9 to the volume value Vo after the change according to the instruction input from the command server 1a. A control signal is output to the sound processing unit 7. The sound processing unit 7 changes the sound volume according to the control signal (S18), and ends the series of processes for acoustic control.

  On the other hand, when the check result is NG (S17, NO), the control unit 10 resets the changed volume value Vo (S19). A specific procedure for resetting the volume value Vo after the change will be described with reference to FIG.

  FIG. 6 is a flowchart for explaining an example of a method for resetting the volume after the change. First, a value obtained by subtracting the current volume value Vp from the changed volume value Vo set at that time, that is, the volume change width and the volume change width maximum value Vcl are compared (S31). When the volume change width is equal to or smaller than the volume change width maximum value Vcl (S31, NO), the changed volume value Vo is compared with the set volume maximum value Vh (S33).

  On the other hand, when the volume change width is larger than the volume change width maximum value Vcl (S31, YES), the volume obtained by adding the volume change width maximum value Vcl to the current volume value Vp is reset as the changed volume value Vo. (S32). Then, the changed volume value Vo is compared with the set volume maximum value Vh (S33).

  When the changed volume value Vo is equal to or less than the set maximum volume value Vh (S33, NO), the changed volume value Vo is determined, and the series of volume resetting procedures is terminated. On the other hand, when the changed volume value Vo is larger than the set maximum volume value Vh (S33, YES), the maximum volume value Vh is reset as the changed volume value Vo (S34), and a series of volume re-starts. End the setting procedure.

  Returning to the procedure of FIG. 4, after the changed volume value Vo is reset, the control unit 10 outputs a control signal to the audio processing unit 7 so as to change the volume of the speaker 9 to the changed volume value Vo. . The voice processing unit 7 changes the volume according to the control signal (S19). Then, the user is notified that the contents of the operation instruction are limited and executed (S20), and the series of processes of the acoustic control is terminated.

  Note that a notification that the operation instruction content has been executed is output from the broadcast receiving apparatus 1 through the command server 1a, the Internet line 400, and the voice recognition server 300 as voice.

  For example, when the current volume of the broadcast receiving apparatus 1 is 19 and the maximum volume Vh is 40, when the user inputs “Turn up the volume of the TV 30” to the speaker 200 with a microphone, the volume is maximum. From the constraint condition of the value Vh, the volume after the change is 40, not 49 that the user desires. As described above, when the volume is not changed to the state intended by the user, the user is notified by voice via the speaker 200 with the microphone. Note that the notification means is not limited to voice, and may be displayed as a message on the display screen of the broadcast receiving apparatus 1 or other means, for example. Further, the notification by voice may be performed not only by the device (= speaker 200 with a microphone) in which the operation content is input, but also by the speaker 9 of the broadcast receiving apparatus 1, for example.

  As described above, according to the present embodiment, when performing an operation instruction to increase the volume to the audio device by remote control from another device such as a speaker with a microphone, the volume maximum value Vh, In addition, the maximum volume change width Vcl is set, and the operation instruction contents input by the volume are compared with these set values to determine whether or not the operation instruction contents are appropriate. If it is determined to be appropriate, the volume is changed according to the input operation instruction content. On the other hand, if it is determined that the sound volume is not appropriate, the sound volume is changed within a predetermined range based on the sound volume maximum value Vh and the sound volume change width maximum value Vcl. Therefore, it is possible to prevent a sudden loud sound from being output from the acoustic device, and to reduce stress on the user.

  In the above description, the control unit 10 of the broadcast receiving apparatus 1 that is an audio device performs the determination as to whether or not the operation instruction content is appropriate, and the alternative operation instruction when it is determined as inappropriate. You may carry out by the command server 1a.

  For example, when an operation signal is input to the command server 1a and the operation target device is the broadcast receiving device 1 and the operation content is to increase the volume, the command server 1a sends the maximum volume value to the broadcast receiving device 1. An instruction is output to transmit Vh, the maximum volume change width Vcl, and the current volume value Vp. When receiving the instruction, the control unit 10 of the broadcast receiving apparatus 1 outputs these values stored in the nonvolatile memory 10c to the command server 1a. The command server 1a uses these input values to determine whether or not the operation instruction content is valid. When it is determined that it is not appropriate, the changed volume value Vo is reset and an operation signal is input to the broadcast receiving apparatus 1.

  Moreover, in the above, the voice recognition server having a function of analyzing a voice command input from a speaker with a microphone, analyzing text data, and analyzing a user's intention, and a command server for performing an operation instruction to an acoustic device, Although the operation content by the voice instruction from the user is transmitted to the acoustic device using two servers, these functions may be performed by one server, or the functions are performed by three or more servers. You may make it the structure which divides and has.

  Further, the command server 1a may be configured inside the volume control device 1.

  Further, in the above description, when it is determined that the operation instruction content is not appropriate, the sound control device resets the sound to the appropriate operation instruction content and changes the volume. However, the user may be inquired whether the operation is possible. . FIG. 7 is a flowchart for explaining another example of the acoustic control method according to this embodiment.

  After the user inputs a voice command for increasing the volume of the broadcast receiving apparatus 1 to the microphone-equipped speaker 200 until the validity of the operation instruction content is checked (a series of steps from S11 to S17 in FIG. 4). When it is determined that the check result is NG (S17, NO), the broadcast receiving apparatus 1 notifies the user that the check result is NG and inquires whether the volume can be changed (S41). As a notification method, similar to the method of notifying that the change has been controlled in S20 of FIG. 4, notification is made by voice from the speaker 200 with the microphone via the command server 1a, the Internet line 400, and the voice recognition server 300. It is desirable.

  In response to an inquiry about whether or not the volume can be changed, the user again inputs an operation instruction by voice. The voice command input by the user is again subjected to a predetermined analysis by the voice recognition server 300 and input to the command server 1a via the Internet line 400 as an operation signal. The command server 1 a converts the operation signal into a predetermined format and inputs it to the broadcast receiving apparatus 1. The control unit 10 outputs a control signal to the sound processing unit 7 so as to change the volume of the speaker 9 in accordance with the operation instruction input from the user according to the instruction input from the command server 1a. The sound processing unit 7 changes the volume in accordance with the control signal (S42), and ends the series of processes for acoustic control.

  As described above, when it is determined that the content of the first operation instruction is not valid, the user changes the volume by exceeding the set values (maximum volume value Vh, volume change width maximum value Vcl) by inquiring the user again. It is possible to cope with the case where the user wants to do so, and a more flexible volume adjustment operation can be performed.

  Although several embodiments of the present invention have been described, these embodiments are shown by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Sound control apparatus (broadcast receiving apparatus), 1a ... Command server, 2a ... Input terminal, 2b, 2c, 2d ... Terminal, 3 ... Signal processing part, 4 ... Graphic processing part, 5 ... Signal generation part, 6 ... Image | video Processing unit, 7 ... Audio processing unit, 8 ... Video display unit, 9 ... Speaker, 10 ... Control unit, 10c ... Non-volatile memory, 11 ... Operation unit, 12 ... Reception unit, 14 ... Card holder, 15 ... CAS module, DESCRIPTION OF SYMBOLS 21 ... Antenna, 22 ... Remote controller, 23 ... Card, 100 ... Sound control apparatus, 200 ... Speaker with microphone, 300 ... Voice recognition server, 400 ... Internet line.

Claims (9)

A command server that analyzes a volume control command input from the outside and outputs an operation signal to an acoustic control device to be controlled;
A change volume value is determined based on the operation signal, the current volume value of the acoustic control device is compared with the change volume value, and the change volume value is greater than a set maximum volume value or the change volume value And a volume control unit that resets the changed volume value when the difference between the value and the current volume value is greater than a set maximum volume change amount.   The acoustic control apparatus according to claim 1, wherein the volume control command is a voice command.   The volume control unit resets the volume to a value smaller than the changed volume value as the reset, or resets the difference to be a value smaller than a set maximum volume change amount. The acoustic control device according to claim 1 or 2.   The sound control device according to any one of claims 1 to 3, wherein when the changed sound volume value is reset, the sound volume control unit notifies that the sound volume has been reset.   The volume control unit sends a notification as to whether or not change is possible when the changed volume value is greater than the maximum volume value or the difference between the changed volume value and the current volume value is greater than the maximum volume change amount. The acoustic control device according to claim 1, wherein the acoustic control device is issued. Analyzes the volume control command input from the outside, outputs an operation signal to the acoustic control device to be controlled,
A change volume value is determined based on the operation signal,
Compare the current volume value of the acoustic control device with the changed volume value,
The changed volume value is reset when the changed volume value is greater than the set maximum volume value or when the difference between the changed volume value and the current volume value is greater than the set maximum volume change amount. , Acoustic control method.   The acoustic control method according to claim 6, wherein the volume control command is a voice command.   The acoustic control method according to claim 6 or 7, wherein when the changed sound volume value is reset, notification of resetting is made.   The change volume value is larger than the maximum volume value, or if the difference between the change volume value and the current volume value is larger than the maximum volume change amount, a notification for inquiring whether the change is possible is issued. The sound control method according to claim 6 or 7.

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