CA2620030A1 - Method and apparatus for decoding an audio signal - Google Patents

Method and apparatus for decoding an audio signal Download PDF

Info

Publication number
CA2620030A1
CA2620030A1 CA002620030A CA2620030A CA2620030A1 CA 2620030 A1 CA2620030 A1 CA 2620030A1 CA 002620030 A CA002620030 A CA 002620030A CA 2620030 A CA2620030 A CA 2620030A CA 2620030 A1 CA2620030 A1 CA 2620030A1
Authority
CA
Canada
Prior art keywords
audio signal
signal
timeslot
arranging
downmix
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002620030A
Other languages
French (fr)
Other versions
CA2620030C (en
Inventor
Hee Suk Pang
Hyeon O Oh
Dong Soo Kim
Jae Hyun Lim
Yang Won Jung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020060056480A external-priority patent/KR20070003574A/en
Application filed by Individual filed Critical Individual
Publication of CA2620030A1 publication Critical patent/CA2620030A1/en
Application granted granted Critical
Publication of CA2620030C publication Critical patent/CA2620030C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The invention relates to a method for decoding an audio signal, to allow an audio signal to be compressed and transfered more efficiently. The inventive method comprises steps of receiving an audio signal with spatial information signal, obtainning location information using the number of time slot and parameter of audio signal, establishing a multi-channel audio signal by applying spatial information signal to down-mix signal, and performing a multi-channel array for a multi-channel audio signal in response to the output channel.

Claims (12)

  1. [Claim 1]

    A method of decoding an audio signal, comprising:
    receiving an audio signal including a spatial information signal and a downmix signal;

    obtaining position information of a timeslot using a timeslot number and a parameter number included in the audio signal;

    generating a multi-channel audio signal by applying the spatial information signal to the downmix signal according to the position information of the timeslot; and arranging multi-channel audio signal correspondingly to an output channel.
  2. [Claim 2]

    The method of claim 1, wherein the position information of the timeslot is represented as a variable bit number.
  3. [Claim 3]

    The method of claim 2, wherein the position information includes an initial value and a difference value, wherein the initial value indicates the position information of the timeslot to which a first parameter is applied and wherein the difference value indicates the position information of the timeslot to which a second or subsequent parameter is applied.
  4. [Claim 4]

    The method of claim 3, wherein the initial value is represented as a variable bit number decided using at least one of the timeslot number and the parameter number.
  5. [Claim 5]

    The method of claim 3, wherein the difference value is represented as a variable bit number decided using at least one of the timeslot number, the parameter number and the position information of the timeslot to which a previous parameter is applied.
  6. [Claim 6]

    The method of claim 1, further comprising arranging downmix signal according to a preset method.
  7. [Claim 7]

    The method of claim 6, wherein the arranging downmix signal is performed on the downmix signal entering a signal converting unit upmixing two downmix signals into three signals.
  8. [Claim 8]

    The method of claim 6 or claim 7, wherein if a header is included in the spatial information signal, the downmix signal is arranged using audio signal arrangement information included in configuration information extracted from the header.
  9. [Claim 9]

    The method of any one of claim 1, claim 2 and claim 6, wherein information quantity required for mapping an ith audio signal or for arranging an ith downmix signal is an minimum integer equal to or greater than log2[(the number of total audio signals or the number of total downmix signals)-(a value of the 'i')+1].
  10. [Claim 10]

    An apparatus for decoding an audio signal, comprising:

    an upmixing unit upmixing an audio signal into a multi-channel audio signal; and a multi-channel arranging unit mapping the multi-channel audio signal to output channels according to a preset arrangement.
  11. [Claim 11]

    An apparatus for decoding an audio signal, comprising:

    a core decoding unit decoding an encoded downmix signal;

    an arranging unit arranging the decoded audio signal according to a preset arrangement; and an upmixing unit upmixing the arranged audio signal into a multi-channel audio signal.
  12. [Claim 12]

    The method of claim 1, wherein the arranging of the multi-channel audio signal further comprises arranging the audio signal correspondingly to a speaker.
CA2620030A 2005-08-30 2006-08-30 Method and apparatus for decoding an audio signal Active CA2620030C (en)

Applications Claiming Priority (27)

Application Number Priority Date Filing Date Title
US71211905P 2005-08-30 2005-08-30
US60/712,119 2005-08-30
US71920205P 2005-09-22 2005-09-22
US60/719,202 2005-09-22
US72300705P 2005-10-04 2005-10-04
US60/723,007 2005-10-04
US72622805P 2005-10-14 2005-10-14
US60/726,228 2005-10-14
US72922505P 2005-10-24 2005-10-24
US60/729,225 2005-10-24
US73562805P 2005-11-12 2005-11-12
US60/735,628 2005-11-12
US74860705P 2005-12-09 2005-12-09
US60/748,607 2005-12-09
KR10-2006-0004056 2006-01-13
KR10-2006-0004065 2006-01-13
KR20060004055 2006-01-13
KR20060004065 2006-01-13
KR20060004056 2006-01-13
KR10-2006-0004055 2006-01-13
US76253606P 2006-01-27 2006-01-27
US60/762,536 2006-01-27
US80382506P 2006-06-02 2006-06-02
US60/803,825 2006-06-02
KR10-2006-0056480 2006-06-22
KR1020060056480A KR20070003574A (en) 2005-06-30 2006-06-22 Method and apparatus for encoding and decoding an audio signal
PCT/KR2006/003435 WO2007027056A1 (en) 2005-08-30 2006-08-30 A method for decoding an audio signal

Publications (2)

Publication Number Publication Date
CA2620030A1 true CA2620030A1 (en) 2007-03-08
CA2620030C CA2620030C (en) 2011-08-23

Family

ID=37809094

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2620030A Active CA2620030C (en) 2005-08-30 2006-08-30 Method and apparatus for decoding an audio signal

Country Status (5)

Country Link
EP (3) EP1922721A4 (en)
KR (1) KR100830472B1 (en)
AU (1) AU2006285544B2 (en)
CA (1) CA2620030C (en)
WO (3) WO2007027057A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009093867A2 (en) 2008-01-23 2009-07-30 Lg Electronics Inc. A method and an apparatus for processing audio signal
KR101024924B1 (en) * 2008-01-23 2011-03-31 엘지전자 주식회사 A method and an apparatus for processing an audio signal
US8615088B2 (en) 2008-01-23 2013-12-24 Lg Electronics Inc. Method and an apparatus for processing an audio signal using preset matrix for controlling gain or panning
KR20140046980A (en) 2012-10-11 2014-04-21 한국전자통신연구원 Apparatus and method for generating audio data, apparatus and method for playing audio data
WO2014058275A1 (en) * 2012-10-11 2014-04-17 한국전자통신연구원 Device and method for generating audio data, and device and method for playing audio data
US10878828B2 (en) * 2014-09-12 2020-12-29 Sony Corporation Transmission device, transmission method, reception device, and reception method

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9000338A (en) * 1989-06-02 1991-01-02 Koninkl Philips Electronics Nv DIGITAL TRANSMISSION SYSTEM, TRANSMITTER AND RECEIVER FOR USE IN THE TRANSMISSION SYSTEM AND RECORD CARRIED OUT WITH THE TRANSMITTER IN THE FORM OF A RECORDING DEVICE.
JP3088319B2 (en) * 1996-02-07 2000-09-18 松下電器産業株式会社 Decoding device and decoding method
EP0827312A3 (en) * 1996-08-22 2003-10-01 Marconi Communications GmbH Method for changing the configuration of data packets
US6339760B1 (en) * 1998-04-28 2002-01-15 Hitachi, Ltd. Method and system for synchronization of decoded audio and video by adding dummy data to compressed audio data
JPH11330980A (en) * 1998-05-13 1999-11-30 Matsushita Electric Ind Co Ltd Decoding device and method and recording medium recording decoding procedure
JP3346556B2 (en) * 1998-11-16 2002-11-18 日本ビクター株式会社 Audio encoding method and audio decoding method
US6631352B1 (en) * 1999-01-08 2003-10-07 Matushita Electric Industrial Co. Ltd. Decoding circuit and reproduction apparatus which mutes audio after header parameter changes
US6611212B1 (en) 1999-04-07 2003-08-26 Dolby Laboratories Licensing Corp. Matrix improvements to lossless encoding and decoding
US8340302B2 (en) 2002-04-22 2012-12-25 Koninklijke Philips Electronics N.V. Parametric representation of spatial audio
JP2005533271A (en) * 2002-07-16 2005-11-04 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Audio encoding
JP4084990B2 (en) * 2002-11-19 2008-04-30 株式会社ケンウッド Encoding device, decoding device, encoding method and decoding method
US20040199276A1 (en) * 2003-04-03 2004-10-07 Wai-Leong Poon Method and apparatus for audio synchronization
JP2005352396A (en) 2004-06-14 2005-12-22 Matsushita Electric Ind Co Ltd Sound signal encoding device and sound signal decoding device
KR100663729B1 (en) * 2004-07-09 2007-01-02 한국전자통신연구원 Method and apparatus for encoding and decoding multi-channel audio signal using virtual source location information
US8204261B2 (en) * 2004-10-20 2012-06-19 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Diffuse sound shaping for BCC schemes and the like
KR100682904B1 (en) * 2004-12-01 2007-02-15 삼성전자주식회사 Apparatus and method for processing multichannel audio signal using space information

Also Published As

Publication number Publication date
KR20070061280A (en) 2007-06-13
AU2006285544B2 (en) 2012-01-12
WO2007027056A1 (en) 2007-03-08
WO2007027055A1 (en) 2007-03-08
AU2006285544A1 (en) 2007-03-08
EP1932147A4 (en) 2011-03-30
EP1922722A4 (en) 2011-03-30
EP1922721A1 (en) 2008-05-21
EP1922721A4 (en) 2011-04-13
WO2007027057A1 (en) 2007-03-08
KR100830472B1 (en) 2008-05-20
EP1922722A1 (en) 2008-05-21
EP1932147A1 (en) 2008-06-18
CA2620030C (en) 2011-08-23

Similar Documents

Publication Publication Date Title
AU2008215232B2 (en) Methods and apparatuses for encoding and decoding object-based audio signals
JP4601669B2 (en) Apparatus and method for generating a multi-channel signal or parameter data set
JP5455647B2 (en) Audio decoder
EP1989920B1 (en) Audio encoding and decoding
AU2008225321B2 (en) A method and an apparatus for processing an audio signal
RU2394283C1 (en) Methods and devices for coding and decoding object-based audio signals
JP4794448B2 (en) Audio encoder
KR20140028094A (en) Method and apparatus for generating side information bitstream of multi object audio signal
WO2005122639A1 (en) Acoustic signal encoding device and acoustic signal decoding device
JP2009500659A (en) Audio signal encoding and decoding method and apparatus
JP2009500658A5 (en)
CA2620030A1 (en) Method and apparatus for decoding an audio signal
MX2008002760A (en) A method for decoding an audio signal.
JP2009506706A5 (en)
US8626515B2 (en) Apparatus for processing media signal and method thereof
KR20070003544A (en) Clipping restoration by arbitrary downmix gain
CN108206022A (en) Utilize the codec and its decoding method of AES/EBU transmission three-dimensional acoustical signals
TWI409803B (en) Apparatus for encoding and decoding audio signal and method thereof
KR20070031212A (en) Method and Apparatus for encoding/decoding audio signal
KR20070075237A (en) Encoding and decoding method of multi-channel audio signal
KR102191260B1 (en) Apparatus and method for encoding/decoding of audio using multi channel audio codec and multi object audio codec
KR20070031214A (en) Method and Apparatus for encoding/decoding audio signal
KR20070108313A (en) Method and apparatus for encoding/decoding an audio signal
MX2008010631A (en) Audio encoding and decoding

Legal Events

Date Code Title Description
EEER Examination request