WO2014112792A1 - Appareil de traitement de signal audio pour barre sonore et procédé associé - Google Patents

Appareil de traitement de signal audio pour barre sonore et procédé associé Download PDF

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Publication number
WO2014112792A1
WO2014112792A1 PCT/KR2014/000439 KR2014000439W WO2014112792A1 WO 2014112792 A1 WO2014112792 A1 WO 2014112792A1 KR 2014000439 W KR2014000439 W KR 2014000439W WO 2014112792 A1 WO2014112792 A1 WO 2014112792A1
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Prior art keywords
channel
audio signal
speaker
signal
audio
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PCT/KR2014/000439
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English (en)
Korean (ko)
Inventor
서정일
장대영
박태진
최근우
강경옥
김진웅
Original Assignee
한국전자통신연구원
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Priority claimed from KR1020130094411A external-priority patent/KR102160218B1/ko
Application filed by 한국전자통신연구원 filed Critical 한국전자통신연구원
Priority to US14/760,770 priority Critical patent/US20150356975A1/en
Publication of WO2014112792A1 publication Critical patent/WO2014112792A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/005—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo five- or more-channel type, e.g. virtual surround
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Definitions

  • the present invention relates to an audio signal processing apparatus and method for a sound bar, and more particularly, by converting a multi-channel audio signal by using channel-specific location information of the multi-channel audio signal, the virtual signal is virtually in a position intended by the producer of the audio signal.
  • Sound field reproduction technology is a technology for reproducing a sound field that can detect the position of the sound source by outputting an audio signal using a plurality of speakers.
  • the sound bar is a new type loudspeaker configuration, which is a loudspeaker array in which a plurality of loudspeakers are linearly connected.
  • the output format of the audio signal is represented by stereo and 5.1 channels, and these formats are standardized by standardization organizations such as ITU-R and DVD Forum, so the playback position of the speaker is fixed. Only the playback position of each channel signal is determined and played back.
  • Korean Patent Publication No. 10-2009-0110598 discloses a technique for reproducing a sound field using a front speaker array as a sound bar.
  • the prior art reproduces the sound field by determining the signal to be radiated in the form of an arc array according to the sound field reproduction information.
  • the speaker Reproducing multichannel audio signals with arrays has been limited.
  • the present invention can provide an apparatus and method for properly representing a multi-channel sound field by transmitting not only a multi-channel audio signal but also channel-specific location information when a signal is transmitted from a multi-channel decoder to a sound bar in a multi-channel audio playback apparatus. have.
  • An audio signal processing apparatus includes an audio signal output unit for processing an input signal and outputting an audio signal of N channels; And a speaker signal generator configured to generate a speaker signal of the M channel by using an audio signal output position for each channel and an audio signal of the N channel.
  • the audio signal output unit of the audio signal processing apparatus may extract and output playback position information for each channel from an input signal when N is not the number of channels indicating the audio signal output position for each channel. .
  • the speaker signal generation unit of the audio signal processing apparatus identifies an adjacent audio signal based on the audio signal output position for each channel when N is greater than the M, and uses a plurality of adjacent audio signals. One speaker signal can be generated.
  • the speaker signal generator of the audio signal processing apparatus may generate a plurality of speaker signals by dividing an audio signal when the N is less than the M.
  • the speaker signal generation unit of the audio signal processing apparatus may generate an M channel speaker signal by processing an N channel audio signal using a rendering algorithm according to the audio signal output position for each channel.
  • a speaker signal generator of an audio signal processing apparatus when the audio signal output position for each channel is a front channel, an amplitude / power panning rendering or a wave field synthesis rendering
  • the audio signal may be processed by a rendering algorithm to generate at least one speaker signal corresponding to the audio signal.
  • the speaker signal generating unit of the audio signal processing apparatus when the audio signal output position for each channel is a side channel or a rear channel, Head Related Transfer Function rendering (Head Related Transfer Function rendering), beamforming rendering (The audio signal may be processed by a beam forming rendering or a focused source rendering algorithm to generate at least one speaker signal corresponding to the audio signal.
  • Head Related Transfer Function rendering Head Related Transfer Function rendering
  • beamforming rendering The audio signal may be processed by a beam forming rendering or a focused source rendering algorithm to generate at least one speaker signal corresponding to the audio signal.
  • the speaker signal generation unit of the audio signal processing apparatus processes the audio signal by a beam-forming rendering algorithm when the audio signal output position for each channel is a side channel or a rear channel. At least one speaker signal corresponding to the audio signal may be generated.
  • the audio signal output unit of the audio signal processing apparatus may output an N channel audio signal by decoding the audio bitstream to an audio decoder.
  • An audio signal processing apparatus comprises: an audio signal decoder for decoding an audio signal of N channels and playback position information for each channel in an audio bitstream; And an audio renderer for rendering the audio signal of the N channel into the speaker signal of the M channel by using the reproduction position information for each channel and the speaker position information that outputs the speaker signal.
  • the audio renderer of the audio signal processing apparatus may provide an N-channel based on the difference between the playback position information of each channel and the speaker position information when the playback position information of each channel and the speaker position information are different.
  • the audio signal can be rendered as a speaker signal of the M channel.
  • An audio signal processing method comprises the steps of: processing an input signal and outputting an audio signal of N channels; And generating a speaker signal of the M channel by using the audio signal output position of each channel and the audio signal of the N channel.
  • An audio signal processing method includes the steps of decoding an audio signal of N channels and playback position information for each channel in an audio bitstream; And rendering the audio signal of the N channel into the speaker signal of the M channel by using the reproduction position information for each channel and the speaker position information that outputs the speaker signal.
  • the multi-channel audio signal when a sound field is reproduced in a sound bar, the multi-channel audio signal is converted into a speaker signal by using the channel-specific position information of the multi-channel audio signal, so that the producer of the input signal is positioned at the intended position.
  • Virtual channels may be formed.
  • the audio signal processing apparatus when reproducing a sound field in a general speaker environment, converts a multi-channel audio signal into a speaker signal by using the location of the speaker and location information for each channel of the multi-channel audio signal.
  • the virtual channel can be formed at the position intended by the producer of the input signal.
  • FIG. 1 is a view showing an audio signal processing apparatus according to an embodiment of the present invention.
  • FIG. 2 is an example of a structure of the sound bar shown in FIG. 1.
  • FIG. 3 is a diagram illustrating an operation of an audio signal processing apparatus according to an embodiment of the present invention.
  • FIG. 4 is an example of a speaker signal output by a sound bar according to an exemplary embodiment of the present invention.
  • FIG. 5 is a diagram illustrating an audio signal processing apparatus according to another embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a relationship between an audio signal and a speaker signal according to an embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating an audio signal processing method according to an embodiment of the present invention.
  • FIG. 8 is a flowchart illustrating an audio signal processing method according to another embodiment of the present invention.
  • the audio signal processing method according to an embodiment of the present invention may be performed by an audio signal processing apparatus.
  • FIG. 1 is a view showing an audio signal processing apparatus according to an embodiment of the present invention.
  • an audio signal processing apparatus 100 may include an audio signal output unit 110 and a speaker signal generator 120.
  • the audio signal output unit 110 may process an input signal and output an audio signal of N channels.
  • N is the total number of channels of the audio signal output from the audio signal output unit 110, and may be one of the number of channels used in the multi-channel audio signal.
  • the N channel may be one of 2.0 channels, 5.1 channels, 7.1 channels, 10.2 channels, and 22.2 channels.
  • the input signal may include at least one of an analog audio input signal, a digital audio input signal, or an encoded audio bitstream.
  • the audio signal output unit 110 may receive an input signal from a device such as a DVD, BD, or MP3 player.
  • the audio signal output unit 110 may extract and output channel-specific reproduction position information from the input signal when N is not the number of channels for which the audio signal output position for each channel is known, such as 5.1 channels.
  • the reproduction position information for each channel may be information related to a position at which the audio signal for each channel is output.
  • the N-channel audio signal is a stereo audio signal or a multi-channel audio signal formed in accordance with international standards such as a 5.1-channel audio signal
  • an optimal position of a loudspeaker for reproducing the audio signal for each channel is determined.
  • the speaker signal generator 120 may identify the audio signal output position for each channel only by the value of N, the audio signal output unit 110 may not output reproduction position information for each channel.
  • the speaker signal generator 120 may not identify the audio signal output position for each channel by using only N.
  • the input signal includes channel-specific playback position information related to a position at which an audio signal of each channel of the N-channel audio signal is output, and the audio signal output unit 110 extracts and outputs channel-specific playback position information from the input signal.
  • the speaker signal generator 120 may identify the audio signal output position for each channel.
  • the audio signal output unit 110 decodes the audio bitstream by using an audio decoder to output an N channel audio signal. You can output In this case, the audio signal output unit 110 may output the playback position information for each channel by analyzing the information included in the audio bitstream.
  • the speaker signal generator 120 may generate the speaker signal of the M channel by using the audio signal output position for each channel and the audio signal of the N channel received from the audio signal output unit 110.
  • M may be the number of loudspeakers included in the sound bar 130, which is a speaker array in which speaker signals are reproduced.
  • the number N of audio channels input to the speaker signal generator 120 and the number M of channels output by the speaker signal generator 120 may be the same or different.
  • the speaker signal generator 120 identifies adjacent audio signals based on audio channel output positions for each channel, and generates one speaker signal using a plurality of adjacent audio signals. Can be.
  • the speaker signal generator 120 may generate a plurality of speaker signals by dividing the audio signal.
  • the speaker signal generator 120 may determine a method of generating a speaker signal based on at least one of a listening environment such as a position of a listener, a structure of the sound bar 130, and a reflection environment.
  • the speaker signal generator 120 may generate an M channel speaker signal by processing the N channel audio signal using a rendering algorithm according to an audio signal output position for each channel.
  • the speaker signal generator 120 processes the audio signal using a wave field synthesis rendering algorithm to at least one speaker signal corresponding to the audio signal. Can be generated.
  • the speaker signal generator 120 may include head related transfer function rendering, beam-forming rendering, or a concentrated sound source.
  • the audio signal may be processed by a rendered source rendering algorithm to generate at least one speaker signal corresponding to the audio signal.
  • the speaker signal generator 120 At least one speaker signal corresponding to the audio signal may be generated by converting or downmixing the upper channel channel or the lower channel signal into a middle layer channel signal.
  • the speaker signal generator 120 deletes the altitude information from the upper channel or the lower channel, converts the altitude information into the middle channel, and then processes the audio signal using an algorithm such as sound field synthesis rendering to process at least one speaker corresponding to the audio signal. You can also generate a signal.
  • the sound bar 130 may be a speaker array module including M loudspeakers.
  • the sound bar 130 may amplify the M channel speaker signal received from the speaker signal generator 120, and output the amplified M channel speaker signal through the loudspeaker corresponding to each of the M channel speaker signals.
  • the audio signal processing apparatus 100 When the audio signal processing apparatus 100 reproduces the sound field in the sound bar, the audio signal processing apparatus 100 converts the multi-channel audio signal into a speaker signal by using the channel-specific position information of the multi-channel audio signal, thereby virtualizing the input signal to a position intended by the producer of the input signal.
  • Channels may be formed.
  • FIG. 2 is an example of a structure of the sound bar shown in FIG. 1.
  • the sound bar 130 includes panning, wave field synthesis, beam forming, focus source, and head transfer function in a speaker arrangement environment including the sound bar 130.
  • Multi-channel audio signals can be virtually reproduced using three-dimensional sound field processing techniques such as (Head Related Transfer Function).
  • the sound bar 130 may provide a virtual multichannel surround sound field with only a single linear array located in front of the listener.
  • the general sound bar 130 may be composed of a single horizontal linear array 210 positioned at the bottom of the TV as shown in FIG. 2.
  • the sound bar 130 includes a double horizontal linear array 220 installed at the top and bottom of the TV to provide high elevation, a double vertical linear array 230 positioned at the left and right of the TV, and surrounds the TV. It may be composed of a window-shaped array 240 of the form.
  • the sound bar 130 may be installed in a form 250 surrounding the listener or in a form 260 positioned in front of or behind the listener.
  • FIG. 3 is a diagram illustrating an operation of an audio signal processing apparatus according to an embodiment of the present invention.
  • the audio signal output unit 110 may process an input signal and output an N channel audio signal 310 including the first audio signal, the second audio signal, and the N th audio signal.
  • the audio signal output unit 110 may extract and output reproduction position information 320 for each channel from the input signal.
  • the reproduction position information for each channel may be information related to a position at which the audio signal for each channel is output.
  • the speaker signal generator 120 may generate the speaker signal 330 of the M channel by using the audio signal output position 320 for each channel and the audio signal 310 of the N channel received from the audio signal output unit 110. Can be.
  • M may be the number of loudspeakers included in the sound bar 130, which is a speaker array in which speaker signals are reproduced.
  • the speaker signal generator 120 may include a first speaker signal, a second speaker signal, a third speaker signal, and a fourth speaker.
  • the speaker signal 330 of the M channel including the speaker signal and the fifth speaker signal may be output.
  • the number of loudspeakers depends on the playback position for each channel of the audio signal.
  • the multi-channel audio signal may be optimized and output to the sound bar 130.
  • FIG. 4 is an example of a speaker signal output by a sound bar according to an exemplary embodiment of the present invention.
  • the sound bar 400 includes a first speaker 420, a second speaker 430, a third speaker 440, a fourth speaker 450, and a fifth speaker 460, and the input signal is 5.1 channel.
  • the audio signal processing apparatus 100 may output five speaker signals using a 5.1 channel audio signal.
  • 5.1 channel audio signal is C (Center) channel where the output position is located at the front center of the user, L / R (Left / Right) channel where the output position is respectively positioned at the ⁇ 30 ° position of the user, and ⁇ It may include a left side / right side (LS / RS) channel having an output position at a 90 ° position, and a left back / right back (LB / RB) channel having an output position at a user's ⁇ 150 ° position. .
  • the audio signal processing apparatus 100 may include an LS channel of an input signal, a first speaker signal generated using an LB channel, a second speaker signal generated using an L channel of an input signal, and a C channel of an input signal.
  • the third speaker signal generated by using the A, the fourth speaker signal generated by using the R channel of the input signal, the RS channel of the input signal, the fifth speaker signal generated by using the RB channel can be output.
  • first speaker 420, the second speaker 430, the third speaker 440, the fourth speaker 450, and the fifth speaker 460 may include a first speaker signal, a second speaker signal, and a first speaker.
  • the third speaker signal, the fourth speaker signal, and the fifth speaker signal can be output.
  • the first speaker signal output by the first speaker 420 may include a sound 421 reflected to the position of the LS channel and a sound 422 reflected to the position of the LB channel, as shown in FIG. 4. have.
  • the second speaker signal output by the second speaker 430 includes a sound 431 reflected to the position of the L channel, as shown in FIG. 4, and the third speaker output by the third speaker 440.
  • the signal may include sound reflected to the location of the C channel.
  • the fourth speaker signal output by the fourth speaker 450 includes a sound 451 reflected to the position of the R channel as illustrated in FIG. 4, and the fifth speaker output by the fifth speaker 460.
  • the signal may include sound 461 reflected to the position of the RS channel and sound 462 reflected to the position of the RB channel.
  • the sound bar 400 can reproduce a sound field of 5.1 channels with five loudspeakers.
  • the audio signal processing apparatus 100 may generate a second speaker signal using the L channel and the LS channel of the input signal, and generate a fourth speaker signal using the R channel and the RS channel of the input signal.
  • the user may listen to the sound 421 output from the first speaker 420 and the sound reflected by the LS channel output from the second speaker 430 together and recognize the sound of the LS channel.
  • FIG. 5 is a diagram illustrating an audio signal processing apparatus according to another embodiment of the present invention.
  • 5 may be a configuration of an apparatus for processing an audio signal in a sound field reproduction environment composed of speakers other than a sound bar.
  • an audio signal processing apparatus 500 may include an audio signal decoder 510 and an audio renderer 520.
  • the audio signal decoder 510 may decode the N-channel audio signal and the reproduction position information for each channel in the audio bitstream received by the audio signal processing apparatus 500.
  • the audio signal decoder 510 may transmit the decoded N-channel audio signal and playback position information for each channel to the audio renderer 520.
  • the audio renderer 520 may render the audio signal of the N channel as the speaker signal of the M channel by using the reproduction position information for each channel and the speaker position information that outputs the speaker signal.
  • the speaker location information may be manually input by the user who installed the speaker to the audio renderer 520, or each speaker may identify its location and transmit the speaker location information to the audio renderer 520.
  • the speaker signal of the M channel rendered by the audio renderer 520 may include sound field characteristics of the audio signal of the N channel. That is, the audio renderer 520 may render the speaker signal of the M channel to maintain the sound field characteristics of the audio signal of the N channel to the maximum.
  • the audio renderer 520 may identify adjacent audio signals based on the channel-specific audio signal output positions, and may render a plurality of adjacent audio signals as one speaker signal.
  • the audio renderer 520 may render the audio signal of the N channel as the speaker signal of the M channel based on the difference between the playback position information and the speaker position information for each channel. have.
  • the speaker 530 may amplify the speaker signal of the M channel output by the audio renderer 520 and output the amplified speaker signal.
  • the audio signal processing apparatus 500 converts a multi-channel audio signal into a speaker signal by using the location of the speaker and channel-specific location information of the multi-channel audio signal, so that the speaker of the input signal may be different from the location of the channel.
  • the virtual channel may be formed at the intended position.
  • FIG. 6 is a diagram illustrating a relationship between an audio signal and a speaker signal according to an embodiment of the present invention.
  • the audio signal decoder 510 includes a C channel 611, an R channel 612, an RS channel 613, an RB channel 614, an LB channel 615, an LS channel 616, and an L channel 617.
  • the N-channel audio signal 610 may be output.
  • the audio renderer 520 may include a first speaker 621 outputting the C channel 611, a second speaker 622 outputting the R channel 612, and a third speaker outputting the RS channel 613 ( 623, a fourth speaker 624 outputting the RB channel 614, a fifth speaker 625 outputting the LB channel 615, a sixth speaker 626 outputting the LS channel 616, and L
  • the speaker location information 620 indicating the location of each of the seventh speakers 627 outputting the channel 617 may be input.
  • each channel of the first speaker 621 outputting the C channel 611 and the C channel 611 may be different as illustrated in FIG. 6.
  • the second speaker 622 outputting the R channel 612 and the playback position for each channel of the R channel 612, the channel of the third speaker 623 and RS channel 613 outputting the RS channel 613
  • Fourth speaker 624 for outputting a separate playback position
  • the fourth speaker 624 for outputting the RB channel 614
  • a fifth speaker 625 and an LB channel 615 for outputting the playback position for each channel of the RB channel 614 and the LB channel 615.
  • the reproduction position for each channel of 617 may also be different as shown in FIG. 6.
  • the audio renderer 520 may correspond to the C channel 611 to the first speaker 621 based on a difference in the direction and distance between the position of the first speaker 621 and the playback position for each channel of the C channel 611. Can be rendered as a first speaker signal.
  • the first speaker signal output from the first speaker 622 may reproduce the sound field that is closest to the case where the C channel 611 is output at the reproduction position for each channel of the C channel 611.
  • the audio renderer 520 may correspond to the R channel 612 to the second speaker 622 based on a difference in the direction and the distance between the position of the second speaker 622 and the playback position for each channel of the R channel 612. Renders a second speaker signal, and transmits the RS channel 613 to the third speaker 623 based on a difference in the direction and distance between the position of the third speaker 623 and the playback position for each channel of the RS channel 613. It may render to the corresponding third speaker signal.
  • the audio renderer 520 may correspond to the RB channel 614 to the fourth speaker 624 based on a difference in the direction and distance between the position of the fourth speaker 624 and the playback position for each channel of the RB channel 614. Renders the LB channel 615 to the fifth speaker 625 based on a difference in the direction and the distance between the position of the fifth speaker 625 and the reproduction position for each channel of the LB channel 615.
  • the image may be rendered as a corresponding fifth speaker signal.
  • the audio renderer 520 may correspond to the LS channel 616 to the sixth speaker 626 based on a difference in the direction and distance between the position of the sixth speaker 626 and the playback position for each channel of the LS channel 616. Renders the sixth speaker signal to the seventh speaker 627 based on the difference in the direction and the distance between the position of the seventh speaker 627 and the reproduction position for each channel of the L channel 617.
  • the image may be rendered as a corresponding seventh speaker signal.
  • FIG. 7 is a flowchart illustrating an audio signal processing method according to an embodiment of the present invention.
  • FIG. 7 may be an audio signal processing method performed by the audio signal processing apparatus shown in FIG. 1.
  • the audio signal output unit 110 may process an input signal and output an audio signal of N channels.
  • N is the total number of channels of the audio signal output from the audio signal output unit 110, and may be one of the number of channels used in the multi-channel audio signal.
  • the audio signal output unit 110 may extract and output playback position information for each channel from the input signal.
  • the reproduction position information for each channel may be information related to a position at which the audio signal for each channel is output.
  • the speaker signal generator 120 may generate the speaker signal of the M channel using the audio signal output position for each channel and the audio signal of the N channel output in operation 710.
  • the speaker signal generator 120 identifies adjacent audio signals based on audio channel output positions for each channel, and generates one speaker signal using a plurality of adjacent audio signals. Can be.
  • the speaker signal generator 120 may generate a plurality of speaker signals by dividing the audio signal.
  • the speaker signal generator 120 may generate an M channel speaker signal by processing the N channel audio signal using a rendering algorithm according to an audio signal output position for each channel.
  • the sound bar 130 amplifies the M channel speaker signal generated in operation 720 and outputs the amplified M channel speaker signal through the loudspeaker corresponding to each of the M channel speaker signals. I can reproduce it.
  • FIG. 8 is a flowchart illustrating an audio signal processing method according to another embodiment of the present invention.
  • FIG. 8 may be an audio signal processing method performed by the audio signal processing apparatus shown in FIG. 5.
  • the audio signal decoder 510 may decode audio signals of N channels and playback position information for each channel in the audio bitstream received by the audio signal processing apparatus 500.
  • the audio signal decoder 510 may transmit the decoded N-channel audio signal and playback position information for each channel to the audio renderer 520.
  • step 810 the audio renderer 520 M channel the audio signal of the N channel decoded in step 810 by using the speaker position information outputting the speaker signal and the playback position information for each channel decoded in step 810. Can be rendered as a speaker signal.
  • the speaker signal of the M channel rendered by the audio renderer 520 may include sound field characteristics of the audio signal of the N channel.
  • the audio renderer 520 may identify adjacent audio signals based on the channel-specific audio signal output positions, and may render a plurality of adjacent audio signals as one speaker signal.
  • the audio renderer 520 may render the audio signal of the N channel as the speaker signal of the M channel based on the difference between the playback position information and the speaker position information for each channel. have.
  • the speaker 530 may amplify the speaker signal of the M channel rendered in operation 820 and output the amplified speaker signal.
  • a producer of an input signal when a sound field is reproduced in a sound bar, may be converted by converting a multi-channel audio signal into a speaker signal using location information for each channel of the multi-channel audio signal.
  • the virtual channel may be formed at the intended position.
  • the audio signal processing apparatus converts a multi-channel audio signal into a speaker signal by using the location of the speaker and channel-specific location information of the multi-channel audio signal, so that the location of the speaker is channel-specific. Even if the position is different, the virtual channel may be formed at the position intended by the producer of the input signal.

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Abstract

L'invention concerne un appareil de traitement d'un signal audio destiné à reproduire un son en utilisant une barre sonore, et un procédé associé. L'appareil de traitement d'un signal audio comprend: une partie de sortie de signal audio servant à traiter un signal d'entrée de façon à délivrer en sortie un signal audio à N voies; et une partie de génération de signal pour haut-parleurs servant à générer un signal pour haut-parleurs à M voies au moyen de la position de sortie du signal audio de chaque voie et du signal audio à N voies.
PCT/KR2014/000439 2013-01-15 2014-01-15 Appareil de traitement de signal audio pour barre sonore et procédé associé WO2014112792A1 (fr)

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US14/760,770 US20150356975A1 (en) 2013-01-15 2014-01-15 Apparatus for processing audio signal for sound bar and method therefor

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KR20130004360 2013-01-15
KR10-2013-0004360 2013-01-15
KR10-2013-0094411 2013-08-08
KR1020130094411A KR102160218B1 (ko) 2013-01-15 2013-08-08 사운드 바를 위한 오디오 신호 처리 장치 및 방법

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US20100232619A1 (en) * 2007-10-12 2010-09-16 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Device and method for generating a multi-channel signal including speech signal processing
KR20110053600A (ko) * 2009-11-16 2011-05-24 삼성전자주식회사 다채널 사운드 신호 생성 장치
KR20110062912A (ko) * 2009-12-04 2011-06-10 한국전자통신연구원 멀티 채널 오디오 재생 장치 및 시스템
KR20120084136A (ko) * 2011-01-19 2012-07-27 한국해양연구원 바다의 소리 체험장치

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