JP4413000B2 - Audio equipment - Google Patents

Description

  The present invention relates to an audio apparatus.

  For example, an in-vehicle audio device (so-called car audio) is known as an in-vehicle device mounted on a vehicle such as an automobile. An in-vehicle audio device is a device that sends sound output from a tuner as an analog audio source that receives radio broadcasts, a CD player as a digital audio source, or the like, using an amplifier, an in-vehicle speaker, or the like (for example, Patent Document 1).

In recent years, a plurality of speakers are mounted on a vehicle, and sound effects are enhanced by outputting different sounds from these speakers.
Japanese Patent Laid-Open No. 11-251939

  However, in the configuration in which different sounds are output from a plurality of speakers as described above, when the user individually adjusts the sound output from each speaker, the sound is output from other than the adjustment target speaker. If this is the case, there is a problem that the sound cannot be adjusted accurately.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an audio apparatus that allows a user to accurately adjust a sound.

In order to achieve the above object, the present invention provides an audio device for reproducing an audio signal from an audio source, wherein the audio signal is divided into a plurality of frequency bands and divided into a plurality of channels for each frequency band. Audio signal processing means for performing sound field correction including time alignment, crossover, and parametric equalizer on the reproduction signal of each channel, and instructing to mute or unmute the reproduction signal Sound field correction for each of the operation means operated by the user, the mute means for attenuating the level of the reproduction signal to a predetermined level according to the operation of the operation means, and the time alignment, crossover and parametric equalizer Playback signal muted during adjustment Corresponded beforehand, the on mode to adjust the by that sound field correction in the audio signal processing means when said operation means is operated, determines the sound field correction to be adjusted, the sound field correction of the adjustment target based on, mute, or to identify the reproduced signal to be canceled muted, the specified reproduced signal the mute state, or already in the case of mute controls the muting means so as to mute release state And a control means.

The present invention, in the above invention, wherein if the adjusted sound field correction is the crossover, reproduction signals of all the channels belonging to the frequency band that is subject to adjustment of the crossover, Alternatively, the mute means is controlled so that all audio signals of other channels except for all channels belonging to the frequency band are muted, or in the mute released state when already muted. .

The present invention, in the above invention, when the adjusted sound field correction is the time alignment, the channel of the reproduced signal of the frequency band that is subject to adjustment of the time alignment, or the channel of the frequency band The mute means is controlled so that all the audio signals of the other channels except the mute state are in a mute state or, if already mute state, the mute release state.

The present invention, in the above invention, wherein if the adjusted sound field correction is a parametric equalizer, all playback signal of the channel which is subject to adjustment of the parametric equalizer, or the channel The mute means is controlled so that all the reproduction signals of the other channels except for mute are in a mute state, or in a mute release state when already in a mute state .

  According to the present invention, the user can accurately adjust the sound.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, as an aspect of the audio apparatus, an in-vehicle audio apparatus mounted on a vehicle or the like is illustrated. FIG. 1 is a block diagram showing a functional configuration of an in-vehicle audio apparatus 1 according to the present embodiment, and FIG. 2 is a front view showing its appearance.

  First, as shown in FIG. 2, a front panel 1 a is mounted on the front surface of the in-vehicle audio device 1. A CD (Compact Disc) insertion slot 24 is formed above the front panel 1a, and a CD can be inserted from this insertion slot. In addition, a display panel 13a such as a liquid crystal display or an organic EL (Electro Luminescence) display is provided at substantially the center of the front panel 1a. The display panel 13a has an operating state of the in-vehicle audio device 1 and a CD being reproduced. Various information such as a track number, a reproduction music title, and a reception channel such as a radio is displayed.

  On the left side of the display panel 13a, a volume switch 20 which is a rotary operator for adjusting the volume (volume) is disposed. The volume switch 20 is superimposed with the function of a push-down switch. When the volume switch 20 is pressed, the playback sound is muted (MUTE).

  An adjustment switch 21 that is a push-down switch is disposed at the lower left of the volume switch 20, and an operation mode switch 23 that is also a push-down switch is disposed at the upper left of the volume switch 20. ing. The adjustment switch 21 is operated when an adjustment screen for performing various adjustments of the in-vehicle audio device 1 is displayed on the display panel 13a. In particular, in the present embodiment, various settings relating to reproduced sound are performed. Is also performed by operating the adjustment switch 21.

  The operation mode switch 23 is operated when switching the operation mode of the in-vehicle audio device 1.

  On the right side of the display panel 13a, an operation key 22 provided with three first to third operation keys 22a to 22c is disposed. These three first to third operation keys 22a to 22c are seesaw type switches having a vertically long key shape. In the present embodiment, the upper part of the first to third operation keys 22a to 22c, or Each preset function is configured to be executed by pressing the lower part.

  Specifically, when the upper part of the first operation key 22a is pressed, when playing a CD or when the CD autochanger is connected as an external device, it functions as a scan (SCN) key, and when the adjustment screen is displayed, the cursor is moved. Functions as a key to move left (or higher level). On the other hand, when the lower part of the first operation key 22a is pressed, it functions as a key for sequentially switching a plurality of discs in the forward direction when the CD autochanger is connected as an external device, and the cursor is moved downward when the adjustment screen is displayed. Functions as a key to move to (or the next item in the same hierarchy).

  When the upper part of the second operation key 22b is pressed, when a CD is played or when a CD autochanger is connected as an external device, it functions as a repeat playback (RPT) key. When the adjustment screen is displayed, the cursor is moved to the right. Functions as a key to move in the direction (or lower hierarchy). On the other hand, when the lower part of the second operation key 22b is pressed, when the CD autochanger is connected as an external device, it functions as a key for sequentially switching a plurality of discs in the reverse direction. Functions as a key to move upward (or the previous item in the same hierarchy).

  When the upper part of the third operation key 22c is pressed, it functions as a random playback (RDM) key during CD playback or when a CD autochanger is connected as an external device. On the other hand, when the lower part of the third operation key 22c is pressed, a function preset by the user (no assignment in the initial state) is executed.

  Further, a display key 25 for the user to switch display on / off of the display panel 13a is provided at the lower left of the display panel 13a. Here, “display off” refers to a state where not only the display on the display panel 13a is not performed but also the power supply to the driver circuit that drives the display panel 13a is cut off. Therefore, for example, it is possible to turn off the display during CD reproduction, thereby preventing an electric signal for driving the display panel 13a from being mixed into the reproduction signal as noise.

  In addition to the above-described components, the front panel 1a of the in-vehicle audio device 1 includes a power on / off / function key, a search up key, a play / pause / input confirmation (ENT) key, a search down key, a band A switch (during radio reception) / leading song move (during CD playback) / lead disc move (during CD changer playback) key is provided.

  The in-vehicle audio apparatus 1 according to the present embodiment divides the frequency band of the sound to be reproduced into four bands, a high range, a middle range, a low range, and a subwoofer. A channel and an R channel are provided, and a reproduction signal is generated for each channel. As shown in FIG. 1, each of these reproduction signals (reproduction analog signals) is output to a speaker (not shown). For this purpose, an analog terminal output unit 8 is provided. Specifically, the analog terminal output unit 8 includes a high range L channel speaker terminal 8-1a, a high range R channel speaker terminal 8-1b, a middle range L channel speaker terminal 8-2a, and a middle range R. Channel speaker terminal 8-2b, low range L channel speaker terminal 8-3a, low range R channel speaker terminal 8-3b, L channel subwoofer terminal 8-4a, R channel subwoofer terminal 8- A total of eight terminals, 4b, are provided.

  Moreover, as shown in FIG. 1, the vehicle-mounted audio apparatus 1 is provided with the controller 11 which controls each part of an apparatus. The controller 11 is configured as a microcomputer including a CPU as a control execution unit and a ROM or RAM as a storage unit, and performs various controls by the CPU executing a control program stored in advance in the ROM. . The controller 11 is connected to an operation unit 12 including various operation keys and operation switches such as the operation keys 22 and the volume switch 20 described above. Various operations on the operation unit 12 by the user are performed by the controller 11. In response to this input, the controller 11 executes processing. The controller 11 is connected to the display panel 13a and a display unit 13 including a driver circuit (not shown) for driving the display panel 13a. Under the control, various information such as the operation state of the in-vehicle audio device 1, the reproduced music, the reception radio channel, and the like are displayed.

  The in-vehicle audio apparatus 1 also reads a digital signal (for example, a music signal) recorded on a CD and outputs the digital signal to a DSP (Digital Signal Processor) 4 via the digital interface 3. The CD drive 2 is a digital audio source. Built in. The digital interface 3 is connected to the CD drive 2 in a serial signal and connected to the DSP 4 in a parallel signal, and converts the digital signal from the CD drive 2 into a two-channel parallel signal including an L channel and an R channel for stereo reproduction. And output to DSP4.

  The DSP 4 uses a digital signal (reproduced signal) of a total of 8 channels of 2 channels (R channel, L channel) for the high range speaker, middle range speaker, low range speaker and subwoofer from the input digital signal. Sound field correction is performed on each of these 8 channel signals under the control of the controller 11, such as filtering, equalizing processing such as gain setting, and surround processing such as alignment (delay time). Output to the D / A converter (DAC) 5.

  Here, the DSP 4 of the present embodiment includes a parametric equalizer having a plurality of peaking equalizers, and four bands for a high range, a middle range, a low range, and a subwoofer. A filter circuit that adjusts the passband frequency (cutoff frequency), frequency bandwidth (crossover), and gain is provided. The parameters of the parametric equalizer and the parameters of each filter circuit are used for sound field correction adjustment. Therefore, it is configured to be adjustable by the user.

  The D / A converter 5 converts the digital signals for 8 channels output from the DSP 4 into analog signals and outputs the analog signals to the electronic volume 6. The electronic volume 6 adjusts the gains of the eight input analog signals (reproduction signals) individually under the control of the controller 11, and outputs them to the analog output terminal unit 8 via the mute circuit 7.

  On the other hand, under the control of the controller 11, the mute circuit 7 puts all eight analog signals into the mute (silence) state or outputs them as they are. The mute state is not limited to the mute state, and may be a state in which the signal level of the reproduced sound is attenuated.

  The in-vehicle audio apparatus 1 includes a tuner 9 as an analog audio source in addition to the digital audio source. The tuner 9 receives broadcast radio waves such as radio broadcasts and outputs an analog signal. The analog signal is input to the DSP 4 via the selector 10. The DSP 4 incorporates an A / D conversion circuit (not shown). When an analog signal is input, the DSP 4 converts the analog signal into a digital signal, and after applying various sound field effects as described above, the D / A converter 5 is output. The selector 10 selects an analog audio source signal to be input to the DSP 4 under the instruction of the controller 11.

  The in-vehicle audio apparatus 1 includes an external device connection terminal 16 and an optical input / output terminal 15 as terminals for transmitting / receiving data to / from the external device 17. The external device connection terminal 16 is a connection terminal for the external device 17 and is connected to a signal cable having a bus line (communication line) and analog audio signal lines (L, R). That is, the in-vehicle audio apparatus 1 and the external device 17 communicate with each other via the external device connection terminal 16, and when the external device 17 is an analog audio source, an analog audio signal is output from the external device connection terminal 16. Is input to the in-vehicle audio apparatus 1 and output to the selector 10. The selector 10 selects an analog audio signal from the external device 17 under the instruction of the controller 11 and outputs it to the DSP 4, whereby the analog audio signal from the external device 17 is reproduced.

  On the other hand, the optical input / output terminal 15 is used for transferring a digital audio signal to / from the external device 17, and an optical cable 18 is connected to the optical input / output terminal 15. As shown in FIG. 3, when the external device 17 is a digital audio source such as a CD autochanger (hereinafter simply referred to as “digital source”), digital audio that is a reproduction signal from the external device 17 to the in-vehicle audio device 1. A signal is input. On the contrary, as shown in FIG. 4, when the external device 17 is an external amplifier device, a digital audio signal as a reproduction signal is output from the in-vehicle audio device 1 to the external device 17. Input / output switching of digital signals to / from the external device 17 is performed by the input / output switching unit 14 in accordance with instructions from the controller 11. Thereby, the input and output of a digital signal can be performed by one optical input / output terminal 15.

  Incidentally, as described above, the in-vehicle audio apparatus 1 according to the present embodiment is configured to be capable of 8-channel playback, and the user can appropriately adjust the sound of each channel. However, when the user adjusts the sound for each channel, if a sound other than the channel to be adjusted is output, there is a problem that the channel cannot be adjusted accurately. Therefore, in the present embodiment, only the channel desired by the user can be muted (MUTE: mute) or mute can be released.

  Specifically, in the present embodiment, the following three adjustment items are provided as modes for performing reproduction sound adjustment (hereinafter referred to as “sound field correction adjustment”) performed by the user. That is, first, parametric equalizer adjustment (P.EQ adjustment) for adjusting the parameters of the parametric equalizer for each L channel and R channel, and second, a high range speaker, a middle range speaker, a low range speaker, and a subwoofer Crossover adjustment (X-OVER adjustment) that adjusts the frequency band output to each speaker, and thirdly, it is output from each of the high range speaker, middle range speaker, low range speaker, and subwoofer speaker There are three types of time alignment adjustment (TIME ALIGNMENT adjustment) for adjusting the reverberation sound of the reproduced sound for each L channel and R channel. These adjustments are performed by operating the operation keys 22, for example.

  Therefore, the controller 11 executes mute key processing (see FIG. 3) described below when the volume switch 20 is pressed by the user to instruct mute (or mute release) to adjust the sound field correction. , That is, which adjustment is selected (selected) by the user among the above three adjustment items, and various mute processes (see FIGS. 4 to 7) described later are executed. The channel to be muted (or unmuted) is specified. Here, in the present embodiment, a mute flag is provided for each channel, and the mute state is indicated by the mute flag. Therefore, in the mute process, the controller 11 sets a mute flag corresponding to the channel to be muted, executes a process for clearing the mute flag corresponding to the channel to be unmuted, and performs a mute common process to be described later. (See FIG. 8), the channel for which the mute flag is set is put into the mute state. Hereinafter, these processes will be described in detail with reference to FIGS.

  FIG. 3 is a flowchart showing the mute (MUTE) key process described above.

  As shown in this figure, when the volume switch 20 is pressed and a mute instruction or a mute release instruction is issued, the controller 11 first determines whether the sound field correction is currently being adjusted by the user (step). Sa1). When the sound field correction is being adjusted, the controller 11 determines which channel should be muted to indicate that the user has issued a mute instruction or a mute release instruction to adjust the sound for each channel. Therefore, the following processing is executed.

  That is, the controller 11 determines whether the pressing operation of the volume switch 20 is during the parametric equalizer adjustment (P.EQ adjustment) (step Sa2) or the crossover adjustment (X-OVER adjustment) ( Step Sa4) or whether time alignment is being adjusted (TIME ALIGNMENT is being adjusted) (step Sa6).

  If the operation of pressing the volume switch 20 is during parametric equalizer adjustment (P.EQ adjustment), the controller 11 executes a parametric equalizer mute (P.EQ MUTE) process described later (step Sa3). When the crossover adjustment is in progress (X-OVER adjustment is in progress), a crossover mute (X-OVER MUTE) process described later is executed (step Sa5), and the time alignment is being adjusted (TIME ALIGNMENT is being adjusted). If so, a time alignment mute (TIME-A MUTE) process, which will be described later, is executed (step Sa7).

  Further, when the pressing operation of the volume switch 20 is not during the sound field correction adjustment, the controller 11 indicates the following (the normal) as a whole to indicate that the sound of all channels should be muted or unmuted. A mute process is executed (step Sa8).

  FIG. 4 is a flowchart showing the entire (normal) mute process. As shown in this figure, the controller 11 changes the mute flag of the entire channel in order to change the mute state of all eight channels (step Sb1). More specifically, when the volume switch 20 is pressed to instruct to mute (MUTE ON), the entire mute flag indicating the mute state of the entire channel is set and the mute release is instructed. If so (MUTE OFF), the entire mute flag is cleared to unmute the entire channel. After changing the entire mute flag in this way, the controller 11 executes a mute common process (see FIG. 8) (step Sb2). This common mute process is a process for changing the mute state of each channel in accordance with the change of the mute flag and the overall mute flag, and details thereof will be described later.

  FIG. 5 is a flowchart showing the parametric equalizer mute (P.EQ MUTE) process. As shown in this figure, when the volume switch 20 is pressed during parametric equalizer adjustment, the controller 11 is an operation performed while adjusting the L channel (P.EQ-Lch) of the parametric equalizer. (Step Sc1), it is determined whether the entire L channel is muted or unmuted, or whether the entire R channel is muted or unmuted.

  If it is determined in step Sc1 that the volume switch 20 has been pressed while adjusting the L channel, the controller 11 changes the mute flag for the entire L channel (step Sc2). Specifically, when the pressing operation of the volume switch 20 is an instruction to mute (MUTE ON), each mute flag of the entire L channel is set and when the mute release is instructed. Clears the mute flags of the entire L channel and executes a mute common process (to be described later) (step Sc4). Here, the L channel as a whole means four L channels of the L and R channels for the high range, the L and R channels for the middle range, the L and R channels for the low range, and the L and R channels for the subwoofer. Point to.

  As a result of the determination in step Sc1, if the volume switch 20 is pressed while adjusting the R channel, the controller 11 changes the mute flag for the entire R channel in the same manner as for the L channel. (Step Sc3), a mute common process (to be described later) is executed (Step Sc4).

  With the above processing, when the user presses down the volume switch 20 during parametric equalizer adjustment, the entire L or R channel currently being adjusted is muted or unmuted. In other words, when the user is performing parametric equalizer adjustment as sound field correction adjustment, to mute (or unmute) the playback sound of the entire channel of either the L channel or the R channel, select the channel to be muted. The volume switch 20 is pressed to mute (or unmute) the adjustment.

  Next, FIG. 6 is a flowchart showing the cross-over mute (X-OVER MUTE) process. As shown in this figure, when the volume switch 20 is pressed during the crossover adjustment, the controller 11 determines which range (frequency band) among the high range, middle range, low range, and subwoofer is pressed. By determining whether the operation is performed during adjustment (step Se1), it is determined which range (frequency band) of the channel is to be muted or unmuted, and the channel (L And R channel) mute flag is changed (steps Se2 to Se5).

  For example, when the range (frequency band) being adjusted is the high range (HIGH), the controller 11 may select the high range L channel (HIGH-Lch) and the R channel (HIGH) if the pressing operation indicates mute. If the mute flag is set for the two channels (-Rch) and the pressing operation instructs the mute release, the two channels of the high-range L channel (HIGH-Lch) and R channel (HIGH-Rch) The mute flag is cleared (step Se2). Also, when the range being adjusted is the middle range (MID), low range (LOW), and subwoofer (SW), the controller 11 changes the mute flags for the L and R channels of that range, as in the high range. To do. After changing the mute flag in this way, the controller 11 executes a mute common process described later (step Se6).

  With the above processing, when the user presses the volume switch 20 during crossover adjustment, the L and R channels in the currently adjusted range (frequency band) are muted or unmuted. That is, when the user is performing crossover adjustment as sound field correction adjustment, if the playback sound of the L channel and R channel in a specific range is muted (or unmuted), that channel is selected and adjusted. The volume switch 20 is pressed to mute (or unmute).

  FIG. 7 is a flowchart showing the time alignment mute (TIME-A MUTE) process. As shown in this figure, when the volume switch 20 is pressed during the time alignment adjustment, the controller 11 performs the pressing operation for the high range L channel (HIGH-Lch) and the high range R channel (HIGH-Rch). Middle range L channel (MID-Lch), Middle range R channel (MID-Rch), Low range L channel (ROW-Lch), Low range R channel (ROW-Rch), Subwoofer L channel (SW -Lch) and R channel (SW-Rch) of the subwoofer (Step Sd1) by determining which channel is being adjusted (step Sd1), which channel is muted or unmuted Judgment is made and the mute flag of the channel is changed (steps Sd2 to Sd9).

  For example, if the channel being adjusted is a high-range L channel (HIGH-Lch), the controller 11 sets a mute flag for the high-range L channel (HIGH-Lch) if the pressing operation indicates mute. If the pressing operation is an instruction to cancel mute, the mute flag of the high-range L channel (HIGH-Lch) is cleared (step Sd2). Also, when the range being adjusted is another channel, the controller 11 changes the mute flag of that channel as in the case of the high-range L channel. In this way, after changing the mute flag, the controller 11 executes a mute common process described later (step Sd10).

  Through the above processing, when the user presses the volume switch 20 during the time alignment adjustment, the currently adjusted channel is muted or unmuted. That is, when the user is performing time alignment adjustment as sound field correction adjustment, when the reproduction sound of a specific channel among the eight channels is muted (or unmuted), that channel is being selected and adjusted. Then, the volume switch 20 is pressed to mute (or unmute).

  FIG. 8 is a flowchart showing the mute common processing. In this mute common processing, each channel is muted according to the mute flag. That is, the controller 11 has a high range L channel (HIGH-Lch), a high range R channel (HIGH-Rch), a middle range L channel (MID-Lch), a middle range R channel (MID-Rch), and a low range L channel (LOW). -Lch), low range R channel (LOW-Rch), L channel subwoofer (SW-Lch), and R channel subwoofer (SW-Rch) mute flags are set (that is, mute flag = "1") )) In order, and if the mute flag is set, the gain of the corresponding channel is set to “−∞” with respect to the electronic volume (E-VOL) 6 in order to mute the channel. Volume (VOLUME) data instructing to be generated is generated (steps Sf1 to Sf16).

  Next, the controller 11 determines whether or not the overall mute flag is set (that is, the overall mute flag = “1”) (step Sf17). If the overall mute flag is set (step Sf17: YES), the channel 11 In order to mute the whole, volume (VOLUME) data for instructing the electronic volume (E-VOL) 6 to set the gains of all channels to, for example, “−∞” is generated (step Sf18).

  Then, the controller 11 executes a process of transferring the generated volume data to the electronic volume 6 (step Sf19), thereby muting or unmuting the entire channel or the entire channel.

  As described above, according to the present embodiment, when the sound field correction adjustment is performed, the controller 11 mutes based on the content of the sound field correction adjustment when the volume switch 20 is pressed. Alternatively, since the electronic volume 6 is controlled to specify the channel of the band to be unmuted and mute the playback signal of the channel or to cancel the mute, the playback sound of the channel of the band desired by the user is It is possible to mute or cancel the mute individually, so that the user can accurately adjust the sound for each channel.

  Note that the above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified within the scope of the present invention.

  For example, in the above-described embodiment, when the volume switch 20 is pressed during sound field correction adjustment, the playback signal of the currently selected channel is muted or unmuted. Instead, the playback signals of all the channels other than the currently selected channel may be muted or unmuted.

  Also, for example, when the volume switch 20 is pressed for a short time during sound field correction adjustment, the playback signal of the currently selected channel is muted or unmuted, and the volume switch 20 is pressed for a long time. In such a case, the playback signals of all the channels other than the currently selected channel may be muted or unmuted.

  In the above-described embodiment, an in-vehicle audio device mounted on a vehicle or the like is illustrated as an aspect of the audio device. However, the present invention is not limited to this, and the audio device may be installed indoors.

It is a block diagram which shows the functional structure of the vehicle-mounted audio apparatus which concerns on this Embodiment. It is a front view of a vehicle-mounted audio apparatus. It is a flowchart which shows the mute (MUTE) key process performed when a volume switch is pressed down. It is a flowchart which shows the whole (normal) mute (MUTE) process. It is a flowchart which shows a parametric equalizer mute (P.EQ MUTE) process. It is a flowchart which shows a crossover mute (X-OVER MUTE) process. It is a flowchart which shows a time alignment mute (TIME-A MUTE) process. It is a flowchart which shows a mute (MUTE) common process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car audio apparatus 2 CD drive 4 DSP (audio signal processing means)
6 Electronic volume (mute means)
7 Mute circuit 11 Controller (control means)
13 Display 20 Volume switch (first control)
22 Operation keys (second operator)

Claims (4)

In an audio device that plays an audio signal from an audio source,
The audio signal is divided into a plurality of frequency bands, divided into a plurality of channels for each frequency band , a reproduction signal is generated for each channel , and time alignment, crossover and parametric equalizers are performed on the reproduction signals of each channel. Audio signal processing means for performing sound field correction including :
An operation means operated by a user to instruct to mute or unmute the reproduction signal;
Mute means for attenuating the level of the reproduction signal to a predetermined level according to the operation of the operation means;
The time alignment, each crossover and parametric equalizer, related in advance the reproduction signal to mute when the sound field correction adjustment, the audio signal processing mode for adjusting the by that sound field correction means, said operating means operating when, to determine the sound field correction to be adjusted, based on the sound field correction of the adjusted, mute, or to identify the reproduced signal to be canceled muted, the specified reproduction signal mute state, Alternatively, an audio apparatus comprising: control means for controlling the mute means so that the mute state is canceled when the mute state is already established . Wherein if the adjusted sound field correction is the crossover, reproduction signals of all the channels belonging to the frequency band that is subject to adjustment of the crossover, or all belonging to the frequency band 2. The audio apparatus according to claim 1, wherein the mute unit is controlled so that all audio signals of channels other than the channel are in a mute state or in a mute release state when already in a mute state . The control means, when the adjustment target of the sound field correction is the time alignment, the reproduction signal of the channel of the frequency band that is the adjustment target of the time alignment, or other channels excluding the channel of the frequency band The audio device according to claim 1 or 2 , wherein the mute means is controlled so that all the audio signals are muted, or when the audio signal is already muted , the muting means is set to the muted canceling state. Wherein if the adjusted sound field correction is a parametric equalizer, all playback signal of the channel which is subject to adjustment of the parametric equalizer, or any reproduction of other channels except the channel The audio apparatus according to any one of claims 1 to 3, wherein the mute means is controlled so that the signal is in a mute state or in a mute release state when the signal is already in a mute state .

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