JP2006352728A - Audio apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio apparatus that allows a user to recognize sound of human voice as if it is spoken from a mouth of a person displayed on a display apparatus. <P>SOLUTION: The audio apparatus 400 for inputting an audio signal of the same channel to left and right speakers 300L, 300R of two left and right channels, includes: non-localization correction sections that provide a frequency characteristic on the basis of an inverse function to a head transfer function from the left speaker to a left ear of a listener to the audio signal given to the left speaker 300L and provide a frequency characteristic on the basis of an inverse function to a head transfer function from the right speaker 300R to a right ear of the listener to the audio signal given to the right speaker 300R; and crosstalk canceling sections 823, 824 making correction of canceling the sound from the left speaker 300L reaching the right ear of the listener and the sound from the right speaker 300R reaching the left ear of the listener. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an audio apparatus for inputting a monaural audio signal to left and right two-channel speakers.

  In recent years, a system combining a large display and a multi-channel speaker such as a home theater has been put into practical use. For example, as shown in FIG. 4, such an audio system has a speaker 300 </ b> L disposed on the front left side of the listener listening position lp and a speaker 300 </ b> R disposed on the front right side of the listener with the display device 200 disposed in front. And a speaker 300C disposed between these speakers 300L and 300R (in front of the listening position).

  In this audio system, the audio device inputs an audio video signal of a multi-channel audio track to these speakers 300L and 300R. In other words, this audio apparatus inputs an r-channel audio signal to the speaker R and an l-channel audio signal to the speaker L, and an audio signal of the center channel c, which is a channel for a person's speech to be displayed, to the speaker 300C. input. As a result, a human voice is emitted from the speaker 300C, and background sounds, sound effects, back music, and the like are emitted from the speakers 300R and 300L. For this reason, the listener can view the video and audio with a sense of presence like being in a movie theater.

Further, another audio system does not include the speaker 300C as shown in FIG. Only 300L is provided (see, for example, Patent Document 1). The audio device inputs the audio signal of the center channel c in monaural to both the speakers 300L and 300R so as to be localized at a position between the speakers 300L and 300R. Thus, in this audio system, the audio signal of the center channel c is localized at the position of the center speaker 300C that does not actually exist. In this way, if there is a sound source at the position of the speaker 300C, it is possible to cause the listener to have an illusion and to emit a human voice.
JP-A-8-51698

  As described above, when the sound of the center channel c is emitted from the speaker 300 </ b> C with the configuration of FIG. 4, the sound image of the sound of the center channel c is localized at the position of the speaker 300. Further, in the configuration in which the sound of the center channel c is input to and output from the speakers 300R and 300L in FIG. 5, the sound image is localized at a position where the volume and the like of the speakers 300R and 300L are balanced between the viewers.

  In any case, the voice of the center channel c cannot be localized so that the voice is emitted from the voice m from the mouth of the person displayed on the display.

  In particular, in a home theater system using a large display, since the display is installed on the wall and the center speaker etc. are installed on the floor, the localization is not only left and right but also up and down. The localization of the sound image was so large that the viewer felt uncomfortable.

  SUMMARY OF THE INVENTION In order to solve the above-described problems, an object of the present invention is to provide an audio device that allows a user to recognize a voice of a person's speech from a person's mouth displayed on a display. .

  In order to solve the above problems, the present invention employs the following means.

  (1) The present invention is an audio device that inputs audio signals of the same channel to left and right two-channel speakers, and transmits the head from the left speaker to the listener's left ear in response to the audio signal input to the left speaker. A non-localization that gives the frequency characteristics based on the inverse function of the head-related transfer function from the right speaker to the listener's right ear to the audio signal input to the right speaker, while giving the frequency characteristics based on the inverse function to the function A correction unit, and a crosstalk cancellation unit that performs correction on the audio signal to cancel the sound that reaches the right ear of the listener from the left speaker and the sound that reaches the left ear of the listener from the right speaker. Is an audio device characterized by the above.

  In the above configuration, audio signals of the same channel are input to the left and right two-channel speakers. Here, when there is a distance from the speaker to the ear of the listener, the sound is attenuated and the frequency characteristics are changed before the sound is transmitted to the ear. Along with this, sound waves cause interference due to reflection and wraparound by the head, reflection in the auricle, and the like, and the frequency characteristics change accordingly. From this frequency characteristic, the listener recognizes the direction of the sound source.

  In the present invention, the frequency characteristics based on the inverse function of the head-related transfer function from the left speaker to the listener's left ear is imparted to the audio signal input to the left speaker by the non-localization processing unit. At the same time, a frequency characteristic based on the inverse function of the head-related transfer function from the right speaker to the right ear of the listener is given to the audio signal input to the right speaker. Here, the head-related transfer function is a transfer function of sound from the speaker to the ear of the listener.

  This makes it possible to increase the amplitude of each frequency component of the audio signal input to the speaker by the amount of sound attenuation from the speaker to the listener's ear. For this reason, it becomes possible to correct | amend the frequency characteristic of the audio | voice from a speaker to a listener's ear | mouth, flat, and a listener cannot recognize the direction of a sound source based on hearing.

  Further, the audio signal is corrected by the crosstalk canceling unit to cancel the sound that reaches the right ear of the listener from the left speaker and the sound that reaches the left ear of the listener from the right speaker. When crosstalk occurs when the sound from the left speaker reaches the right ear of the listener or when crosstalk occurs when the sound from the right speaker reaches the left ear of the listener, the listener The placement position is recognized as a sound source. Here, since correction for canceling the crosstalk is performed, the listener is prevented from performing such recognition.

  Since the correction as described above is performed on the audio signal by the crosstalk canceling unit and the non-localization processing unit, if the sound emitted from the left and right speakers is localized at any position in the listening room, the listener cannot be recognized only by hearing. . Hereinafter, this state is referred to as an unorientated state. Here, when the present invention is applied to an audio device for emitting the sound of a moving image displayed on a display, the listener can be displayed on the display by the influence of visual sense by making the sound non-localized. Illusion that there is a sound source.

  (2) In the audio apparatus according to the present invention, the audio signal is a center channel signal of a video signal including a multi-channel audio track. The center channel signal is a human speech channel. When the present invention is applied to an audio device for emitting sound of a moving image displayed on a display, a speech sound source is provided at the mouth of a person displayed on the display due to visual influence by making the sound non-localized. It is possible to make the listener have an illusion.

  According to the present invention, the listener can recognize that the sound emitted from the left and right speakers is in a non-localized state where the sound is not localized at any position in the listening room. Here, when the present invention is applied to an audio device for emitting sound of a moving image displayed on a display, a sound source is placed on the mouth of a person displayed on the display due to visual influence by making the sound non-localized. Listeners can be illusioned as there is. For this reason, a user can be made to recognize so that the voice of a person's speech may be emitted from the person's mouth displayed on a display.

  An audio system 100 according to an embodiment of the present invention will be described in detail with reference to FIG. 1 and FIG. FIG. 1 is a diagram for explaining the arrangement of the speakers 300 and the sound emitted from the speakers 300 of the audio system 100 according to the present embodiment.

  The audio system 100 outputs audio of a video displayed on the display device 200. The audio system 100 includes a plurality of speakers 300 arranged around a listener listening position lp in a listening room, and an audio device 400 that inputs audio signals to these speakers 300. This audio signal is an audio signal extracted from a video signal including a multi-channel audio track. The video signal extracted from the video signal is displayed on the display device 200 by a video playback device (not shown).

  The plurality of speakers 300 includes a speaker 300L disposed on the front left side of the listening position lp, a speaker 300R disposed on the front right side, a speaker 300LS disposed on the left side, and a speaker 300RS disposed on the right side. The audio device 400 inputs audio signals of channels r, l, rs, and ls corresponding to the speakers 300 to the speakers 300R, 300L, 300RS, and 300LS, respectively. At the same time, the audio device 400 inputs the audio signal of the center channel c to the speakers 300R and 300L. In addition, the same small letter alphabet as the corresponding speaker 300 is given to each of these channels as an identifier.

  Here, when the signal of the center channel c is input to the speakers 300R and 300L as they are, the sound of the center channel c is localized between the speakers 300L and 300R as shown in FIG. In the audio apparatus 400 according to the present embodiment, the audio signal of the center channel c input to the speakers 300R and 300L is processed based on the head-related transfer function, thereby eliminating the localization of the sound of the center channel c.

  Thus, by making the sound of the center channel c non-localized, the listener localizes the sound not based on the sound itself but based on vision. As a result, the listener localizes the speech output from the center channel c to the mouth m of the person displayed on the screen.

  Hereinafter, the configuration of the audio apparatus 400 having the function of setting the sound of the center channel c as described above to the non-localized state will be described.

  FIG. 2 is a block diagram schematically showing functions of the audio device 400. The audio device 400 includes an audio interface 1, a signal processing unit 2, a DA (digital analog) converter 3, an amplifier 4, and a control unit 5.

  The audio interface 1 is an interface circuit for inputting a digital audio signal from an AV content playback device (not shown) connected to the input terminal 6a via the input terminal 6a. The signal processing unit 2 separates the audio signal input from the audio interface 1 into channels l, r, c, ls, and rs, performs filter processing (frequency characteristic control) on the separated audio signal, and supplies the signal to the speaker 300. Signal processing such as adjustment of output level and delay time is performed.

  The signal processing unit 2 includes, for example, a DSP (Digital Signal Processor) and outputs an audio signal subjected to signal processing to the corresponding DA converter 3 for the channels l, r, ls, and rs. At the same time, the signal processing unit 2 inputs the audio signal of the center channel c to the signal processing unit 8 described later.

  The DA converter 3 converts the input digital audio signal into an analog signal. The DA converter 3 is provided for each speaker 300. The DA converter 31 corresponds to the speaker 300L, the DA converter 32 corresponds to the speaker R, the DA converter 32 corresponds to the speaker LS, and the DA converter 33 corresponds to the speaker RS. What is to be done is a DA converter 34. Audio signals of channels 1 and r are input to the DA converters 31 and 32 via the adder 7 (61 and 62). Audio signals of channels ls and rs are input to the DA converters 33 and 34.

  The amplifying unit 4 (41 to 44) is provided for each speaker 300, amplifies the signal level of the audio signal input from the DA converter 3, and inputs the amplified signal to the speaker 300 connected to the output terminal 6b. As a result, the sounds of the channels l, r, ls, and rs are emitted from the speakers 300L, 300R, 300LS, and 300RS, respectively.

  The control unit 5 includes a CPU (Central Processing Unit) together with a storage unit such as a memory and a user interface such as an operation unit. The control unit 5 executes a program stored in the memory, whereby the signal processing unit 2 and signal processing described later are performed. The operation of each part of the audio apparatus 400 including the signal processing of the part 8 is controlled.

  The audio device 400 includes a signal processing unit 8 in addition to the above-described configuration. The signal processing unit 8 is realized by a DSP or the like, and an audio signal of the center channel c is input from the signal processing unit 2. The signal processing unit 8 subjects the input audio signal to the processing for making the sound of the center channel c as described above into a non-localized state, and outputs the result to the adding unit 7 (71, 72). The signal processing unit 8 may be realized by the same DSP as the signal processing unit 2.

  Hereinafter, a process for setting the sound of the center channel c to the non-localized state and a configuration for performing this process will be described in detail. In order to make the sound of the center channel c non-localized, non-localization correction is required.

  Here, the non-orientation correction is a correction that flattens the frequency characteristics of the sound transmitted from the speaker to both ears of the listener and eliminates the sound localization feeling based on the listener's audibility. Since the speaker 300 is a loudspeaker, the sound is attenuated according to the distance and direction from the speaker 300 to the listener's ear, and the frequency characteristics change. Further, the frequency characteristics change due to reflection or wraparound by the head, reflection by the pinna, or the like. Based on this change in frequency characteristics, the listener empirically recognizes the direction and distance of the sound source.

  Therefore, if the change in frequency characteristics due to sound propagation is canceled by filtering or the like and the sound reaches the listener's ear with a flat characteristic, the listener will recognize the localization of the sound based on the sense of hearing. become unable. In general, when human beings cannot localize sound based on their auditory perception, if there is a video or object to be localized in the field of view, it has the property of recognizing (illusion) that the sound is localized in that video or object. is there.

  In this embodiment, by utilizing this human nature, the sound of the center channel c is subjected to non-localization processing and output, so that the person on the screen recognizes that the speech of the line is localized. .

  Further, in order to output the non-localized sound from the speaker 300, which is a loudspeaker, and to allow the listener to hear the completely non-localized sound for audibility, further crosstalk cancellation processing is required.

  Here, the crosstalk is a phenomenon that occurs when a multi-channel (binaural) signal is output from a loudspeaker instead of a headphone. The binaural signal outputs a sound to be reached to the left ear of the listener from the left speaker, and outputs a sound to be reached to the right ear of the listener from the right speaker, thereby realizing a predetermined localization feeling with respect to the listener. However, in the case of a loudspeaker, the sound output from the left speaker wraps around the listener's right ear, and the sound output from the right speaker also wraps around the listener's left ear (these wraparound sounds). Is referred to as crosstalk), and the predetermined localization feeling and the like are reduced.

  Therefore, by adding and outputting a signal that cancels the crosstalk due to the listener's audibility, a predetermined sense of localization can be realized even when a loudspeaker is used. Specifically, a signal for canceling the crosstalk reaching the right ear from the speaker 300L is output from the speaker 300R, and a signal for canceling the crosstalk reaching the right ear from the speaker 300R is output from the speaker 300L. Cancel the talk. Details of this crosstalk correction will be described later.

  The signal processing unit 8 includes a signal separation unit 81 and a signal correction unit 82 in order to perform non-localization correction and crosstalk cancellation correction as described above. The signal separation unit 81 receives the c-channel audio signal from the signal processing unit 2, and generates four audio signals from the input audio signal.

  The signal correction unit 82 includes an lch signal correction unit 821 and an rch signal correction unit 822 as a configuration for non-localization correction, and an lch crosstalk cancellation unit 823 and an rch crosstalk cancellation unit as a configuration for crosstalk cancellation correction. 824. Each of these units 821, 822, 823, and 824 includes, for example, an FIR (Finite Impulse Response) filter and the like, and an audio signal is input from the signal separation unit 81, respectively.

  In the lch signal correction unit 821, a filter coefficient corresponding to an inverse function of the head related transfer function from the speaker 300L to the left ear of the listener is set in advance. The head-related transfer function is a transfer function of sound from the sound source to the listener's ear opening. With reference to FIG. 3, (A) is a figure which shows the frequency characteristic of the audio | voice transmitted with the head-related transfer function from the speaker 300L to the left ear, (B) is a figure which shows the frequency characteristic based on this inverse function It is. Thus, the lch signal correction unit 821 gives the frequency characteristic shown in (B) to the audio signal of the center channel c to be input to the speaker 300L. Therefore, when this audio signal is transmitted by the head-related transfer function from the speaker 300L to the left ear, each frequency component is attenuated as shown in (A), but the signal level is raised by this attenuation. It will be. Thereby, the frequency characteristic of the sound of the center channel c from the speaker 300L to the left ear can be corrected to be flat.

  In the rch signal correction unit 822, a filter coefficient corresponding to an inverse function of the head related transfer function from the speaker 300R to the right ear of the listener is set in advance. Similarly to the lch signal correction unit 821, the rch signal correction unit 822 also performs an inverse function of the head related transfer function from the speaker 300R to the right ear of the listener with respect to the audio signal of the center channel c to be input to the speaker 300R. The frequency characteristic based on is given. Thereby, the frequency characteristic of the sound of the center channel c from the speaker 300R to the right ear can be corrected to be flat. The lch signal correction unit 821 and the rch signal correction unit 822 input the audio signal subjected to the non-localization correction to the corresponding addition unit 9 (91, 92).

  The lch crosstalk cancellation unit 823 is a filter corresponding to a product of the inverse function of the head-related transfer function from the speaker 300R to the listener's right ear and the inverse function of the head-related transfer function from the speaker 300R to the listener's left ear. Coefficients are preset. Here, the filter coefficient corresponding to the inverse function of the head related transfer function from the speaker 300R to the listener's right ear is set in the audio signal output to the speaker 300R by the correction in the rch signal correction unit 822. This is because the filter characteristic corresponding to the inverse function of the head-related transfer function from the speaker 300R to the listener's right ear is given. By giving the filter characteristic similar to this filter characteristic, an audio signal subjected to the same processing as the audio signal input to the speaker 300R is generated.

  The filter coefficient corresponding to the inverse function of the head-related transfer function from the speaker 300R to the listener's left ear is set to flatly correct the frequency characteristic of the sound of the center channel c from the speaker 300R to the left ear. It is to do. Referring to FIG. 3, (C) is a diagram showing the frequency characteristics of the sound transmitted by the head-related transfer function from the speaker 300R to the left ear, and (D) is a diagram showing the frequency characteristics based on this inverse function. It is. As described above, the lch crosstalk canceling unit 823 gives the frequency characteristic indicated by (D) to the audio signal of the center channel c.

  As a result, when this audio signal is transmitted by the head-related transfer function from the speaker 300R to the left ear, it is attenuated as indicated by (C), but the signal level is raised by this attenuation. For this reason, the frequency characteristic of the sound of the center channel c from the speaker 300R to the left ear can be corrected flat. By this correction, the input audio signal becomes a sound signal (crosstalk cancel signal) for canceling the crosstalk component that is emitted from the speaker 300R and reaches the left ear.

  The rch crosstalk cancellation unit 824 has filter coefficients corresponding to the inverse function of the head-related transfer function from the speaker 300L to the listener's left ear and the inverse function of the head-related transfer function from the speaker 300L to the listener's right ear. Is set. Similarly to the lch crosstalk canceling unit 823, the rch crosstalk canceling unit 824 also calculates the inverse function of the head related transfer function from the speaker 300L to the left ear of the listener and the head related transfer function from the speaker 300L to the right ear of the listener. A filter characteristic based on the inverse function is given to the audio signal of the center channel c. As a result, the audio signal becomes an audio signal (crosstalk cancellation signal) for canceling the crosstalk component emitted from the speaker 300L and reaching the right ear.

  The lch crosstalk cancellation unit 823 and the rch crosstalk cancellation unit rch input the corrected audio signal to the corresponding addition unit 9 (91, 92).

  The adder 91 adds the crosstalk cancellation signal from the lch crosstalk cancel unit 823 to the audio signal input from the lch signal correction unit 821 (hereinafter, the signal after the addition is referred to as “audio signal x1”). The audio signal x1 is input from the adder 91 to the adder 71.

  Further, the adding unit 92 adds the crosstalk cancellation signal from the rch crosstalk canceling unit 824 to the audio signal input from the rch signal correcting unit 822 (the signal after the addition is hereinafter referred to as “audio signal x2”). ). The audio signal x2 is input from the adder 92 to the adder 72.

  The audio signal x1 is added to the audio signal of the channel 1 by the adding unit 71 and input to the speaker 300L via the DA converter 31 and the amplifying unit 41. The audio signal x2 is added to the audio signal of the channel r by the adder 72 and input to the speaker 300R via the DA converter 32 and the amplifier 42. As a result, the sound of the audio signal x1 is emitted from the speaker 300L together with the sound of the channel l and reaches the left ear of the listener. In addition, the audio signal x2 is emitted from the speaker 300R together with the audio of the channel r and reaches the right ear of the listener.

  Here, the crosstalk sound from the speaker 300R also reaches the left ear, and the crosstalk sound from the speaker 300L also reaches the right ear. However, the crosstalk cancellation signal from the speaker 300R is added to the audio signal x1 by the adder 91. Further, a crosstalk cancellation signal from the speaker 300L is added from the audio signal x2 by the adding unit 92. As a result, the crosstalk component is canceled, and neither crosstalk from the speaker 300R to the left ear nor crosstalk from the speaker 300L to the right ear occurs.

  Note that the filter coefficients of the above-described lch signal correction unit 821, rch signal correction unit 822, lch crosstalk cancellation unit 823, and rch crosstalk cancellation unit 824 are calculated and set in advance, for example, as follows. As a preliminary preparation, microphones (not shown) are attached to both ears of the listener while the listener is located at the listening position lp in the listening room. The audio apparatus 400 connects the microphone and prepares to receive a signal from the microphone.

  In this state, when there is an instruction from the listener, the audio device 400 sequentially inputs audio signals for test audio (test audio signals) to the speakers 300L and 300R. Here, a plurality of types of test audio signals having different frequencies are switched at predetermined time intervals and input to the speakers 300L and 300R. By analyzing the test audio signals having a plurality of frequencies input from the microphone, the audio apparatus 400 transmits the head transfer function from the speaker 300R to the listener's right ear and the head transfer from the speaker 300L to the listener's left ear. The function can be analyzed.

  The audio apparatus 400 calculates a filter coefficient corresponding to this head-related transfer function and sets it in each of the above-described units 821, 822, 823, and 824. Note that the filter coefficient may be calculated by other methods such as the above-described processing being performed by the manufacturer before the audio device 400 is shipped. In this case, the listening position lp must be set in a predetermined positional relationship with the speakers 300R and 300L.

  With the configuration described above, the audio apparatus 400 according to the present embodiment can perform the crosstalk cancellation correction and the non-localization correction on the audio signal of the center channel c, thereby making the audio of the center channel c non-localized. This allows the listener to have an illusion that there is a c channel sound source in the mouth m of the person displayed on the display device 200.

  The present embodiment can employ the following modified examples.

  (1) In this embodiment, the channels ls and rs are input to the speakers 300LS and 300RS, but the present invention is not limited to this configuration. The channels ls and rs may also be input to the speakers 300L and 300R so that the sound of the channels ls and rs is emitted from the virtual speaker.

  (2) In this embodiment, the audio signal is input to the speaker 300 with five channels, but the number of channels is not limited to this. Any number of channels may be input as long as audio signals of at least one channel corresponding to human speech are input to two speakers arranged side by side as viewed from the front of the listener.

  (3) In the present embodiment, the speakers 300L and 300R are used as speakers for inputting the audio signal of the center channel c, but other speakers 300 may be used. For example, a configuration may be employed in which speakers 300RS and 300LS are arranged on the front side and monaural center channel c audio signals are input to these speakers 300RS and 300LS.

  (4) In the present embodiment, the audio apparatus 400 performs crosstalk cancellation correction on the audio signal to prevent the crosstalk cancellation. However, the crosstalk cancellation may be prevented by other methods. For example, a configuration in which a speaker having narrow directivity is used as a speaker for the center channel c to prevent crosstalk cancellation may be used. In this configuration, the right speaker is disposed at an angle that allows the sound from the right speaker to reach only the right ear of the listener, and the left speaker is disposed at an angle that allows the sound from the left speaker to reach only the left ear of the listener. .

  (5) In the present embodiment, the configuration is such that the sound of the c channel is in the non-localized state, but is not limited to this configuration, and any configuration may be used as long as the sound of the human speech channel is in the non-localized state.

  (6) In the present embodiment, when the listening position lp is changed due to movement of the listener or the like, the sound of the center channel c does not enter a non-localized state at the changed listening position lp. On the other hand, in the present invention, a configuration may be adopted in which the filter coefficient of the signal correction unit 82 is changed following the change of the listening position lp, that is, the change of the head-related transfer function. In this case, for example, the head-related transfer function is measured in advance at a plurality of locations in the listening room, and the control unit 5 stores the filter coefficient based on the head-related transfer function together with information on the measurement position. When reproducing the audio signal, the audio device 400 inputs the position of the listener as needed from a position sensor or the like attached to the listener. Then, the control unit 5 obtains the filter coefficient corresponding to the input position from the stored filter coefficient and measurement position information, and sets the filter coefficient in the signal correction unit 82.

It is a figure for demonstrating the arrangement | positioning of the speaker of the audio system concerning this embodiment, and the sound emitted from these speakers. FIG. 2 is a block diagram illustrating functions of the audio device. It is a figure for demonstrating the signal correction of a signal correction part. It is a figure for demonstrating the conventional audio system. It is a figure for demonstrating the conventional audio system different from the audio system shown in FIG.

Explanation of symbols

3-DA converter 300L, 300R-speakers (left and right speakers) 400-audio device 821-lch signal correction unit (non-localization processing unit) 822-rch signal correction unit (non-localization processing unit) 823-lch crosstalk cancellation unit 824- rch crosstalk cancel unit l, r, c, ls, rs-channel

Claims (2)

An audio device for inputting audio signals of the same channel to left and right two-channel speakers,
A frequency characteristic based on the inverse function of the head-related transfer function from the left speaker to the listener's left ear is given to the audio signal input to the left speaker, and the right speaker is input to the audio signal input to the right speaker. A non-localization processing unit that gives a frequency characteristic based on an inverse function of a head-related transfer function from the listener to the right ear of the listener;
A crosstalk canceling unit that performs correction on the audio signal to cancel the sound that reaches the right ear of the listener from the left speaker and the sound that reaches the left ear of the listener from the right speaker;
An audio apparatus comprising:   The audio apparatus according to claim 1, wherein the audio signal is a center channel signal of a video signal including a multi-channel audio track.

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