WO2003036622A3 - Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers - Google Patents

Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers Download PDF

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Publication number
WO2003036622A3
WO2003036622A3 PCT/EP2002/011388 EP0211388W WO03036622A3 WO 2003036622 A3 WO2003036622 A3 WO 2003036622A3 EP 0211388 W EP0211388 W EP 0211388W WO 03036622 A3 WO03036622 A3 WO 03036622A3
Authority
WO
WIPO (PCT)
Prior art keywords
frame
decoding
padding bit
audio signal
digital audio
Prior art date
Application number
PCT/EP2002/011388
Other languages
French (fr)
Other versions
WO2003036622A2 (en
Inventor
Ernst F Schroeder
Johannes Boehm
Original Assignee
Thomson Licensing Sa
Ernst F Schroeder
Johannes Boehm
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
Application filed by Thomson Licensing Sa, Ernst F Schroeder, Johannes Boehm filed Critical Thomson Licensing Sa
Priority to US10/493,286 priority Critical patent/US7342944B2/en
Priority to CNB028209273A priority patent/CN1319044C/en
Priority to JP2003539028A priority patent/JP4629977B2/en
Priority to KR1020047006004A priority patent/KR100944084B1/en
Priority to DE60208227T priority patent/DE60208227T2/en
Priority to EP02779477A priority patent/EP1438712B1/en
Publication of WO2003036622A2 publication Critical patent/WO2003036622A2/en
Publication of WO2003036622A3 publication Critical patent/WO2003036622A3/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/04—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 using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • 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

Abstract

With audio data reduction on the basis of ISO/IEC standard 11172-3, a frame length varying by 8 bits is used at a sampling frequency of 44.1 kHz in order to arrive, on average, at a particular fixed data rate. The lengthening of a data frame is signalled by a padding bit in the header of the frames. The invention dispenses with evaluation of the padding bit. Instead, the mean frame length L is calculated, L is rounded down to the next integer, for the subsequent frame it is first established whether the expected sync word for this frame appears, and, if this is so, this frame is decoded without taking into account the padding bit, but if the expected sync word for this frame does not appear, the decoding of the frame is started one 8-bit later without taking into account the padding bit.
PCT/EP2002/011388 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers WO2003036622A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US10/493,286 US7342944B2 (en) 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers
CNB028209273A CN1319044C (en) 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers
JP2003539028A JP4629977B2 (en) 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal located in a frame containing a header
KR1020047006004A KR100944084B1 (en) 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers
DE60208227T DE60208227T2 (en) 2001-10-23 2002-10-11 METHOD AND DEVICE FOR DECODING A CODED DIGITAL AUDIO SIGNAL MADE IN FRAMES CONTAINING HEADS
EP02779477A EP1438712B1 (en) 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP01250372 2001-10-23
EP01250372.8 2001-10-23
EP02090082A EP1308931A1 (en) 2001-10-23 2002-03-01 Decoding of a digital audio signal organised in frames comprising a header
EP02090082.5 2002-03-01

Publications (2)

Publication Number Publication Date
WO2003036622A2 WO2003036622A2 (en) 2003-05-01
WO2003036622A3 true WO2003036622A3 (en) 2003-10-16

Family

ID=26077068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/011388 WO2003036622A2 (en) 2001-10-23 2002-10-11 Method and apparatus for decoding a coded digital audio signal which is arranged in frames containing headers

Country Status (7)

Country Link
US (1) US7342944B2 (en)
EP (2) EP1308931A1 (en)
JP (1) JP4629977B2 (en)
KR (1) KR100944084B1 (en)
CN (1) CN1319044C (en)
DE (1) DE60208227T2 (en)
WO (1) WO2003036622A2 (en)

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KR100546398B1 (en) * 2003-11-25 2006-01-26 삼성전자주식회사 Method for searching sync word in the encoded audio bitstream and computer readable medium thereof
US7415041B2 (en) * 2004-12-31 2008-08-19 Motorola, Inc. Method and apparatus for decoding data in a wireless communication system
WO2006126858A2 (en) * 2005-05-26 2006-11-30 Lg Electronics Inc. Method of encoding and decoding an audio signal
EP1913576A2 (en) * 2005-06-30 2008-04-23 LG Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
CA2613885C (en) * 2005-06-30 2014-05-06 Lg Electronics Inc. Method and apparatus for encoding and decoding an audio signal
JP2009500657A (en) * 2005-06-30 2009-01-08 エルジー エレクトロニクス インコーポレイティド Apparatus and method for encoding and decoding audio signals
US7830921B2 (en) * 2005-07-11 2010-11-09 Lg Electronics Inc. Apparatus and method of encoding and decoding audio signal
JP4859925B2 (en) * 2005-08-30 2012-01-25 エルジー エレクトロニクス インコーポレイティド Audio signal decoding method and apparatus
WO2007055464A1 (en) * 2005-08-30 2007-05-18 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
JP5173811B2 (en) * 2005-08-30 2013-04-03 エルジー エレクトロニクス インコーポレイティド Audio signal decoding method and apparatus
US7788107B2 (en) 2005-08-30 2010-08-31 Lg Electronics Inc. Method for decoding an audio signal
US7646319B2 (en) * 2005-10-05 2010-01-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7751485B2 (en) * 2005-10-05 2010-07-06 Lg Electronics Inc. Signal processing using pilot based coding
KR100857119B1 (en) * 2005-10-05 2008-09-05 엘지전자 주식회사 Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7672379B2 (en) * 2005-10-05 2010-03-02 Lg Electronics Inc. Audio signal processing, encoding, and decoding
US7696907B2 (en) * 2005-10-05 2010-04-13 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
WO2007040361A1 (en) * 2005-10-05 2007-04-12 Lg Electronics Inc. Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US20070092086A1 (en) * 2005-10-24 2007-04-26 Pang Hee S Removing time delays in signal paths
US7752053B2 (en) * 2006-01-13 2010-07-06 Lg Electronics Inc. Audio signal processing using pilot based coding
US8571875B2 (en) 2006-10-18 2013-10-29 Samsung Electronics Co., Ltd. Method, medium, and apparatus encoding and/or decoding multichannel audio signals
US7778839B2 (en) * 2007-04-27 2010-08-17 Sony Ericsson Mobile Communications Ab Method and apparatus for processing encoded audio data
JP5040689B2 (en) * 2008-01-31 2012-10-03 カシオ計算機株式会社 Code string inspection apparatus, code string inspection method, and program
EP2146343A1 (en) 2008-07-16 2010-01-20 Deutsche Thomson OHG Method and apparatus for synchronizing highly compressed enhancement layer data
JP5678048B2 (en) * 2009-06-24 2015-02-25 フラウンホッファー−ゲゼルシャフト ツァ フェルダールング デァ アンゲヴァンテン フォアシュンク エー．ファオ Audio signal decoder using cascaded audio object processing stages, method for decoding audio signal, and computer program
CN103339907B (en) * 2011-02-08 2017-03-15 日本电信电话株式会社 Wireless communication system, dispensing device, reception device and wireless communications method
CN108564957B (en) * 2018-01-31 2020-11-13 杭州士兰微电子股份有限公司 Code stream decoding method and device, storage medium and processor

Citations (2)

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EP0402973A1 (en) * 1989-06-02 1990-12-19 Koninklijke Philips Electronics N.V. Digital transmission system, transmitter and receiver for use in the transmission system, and record carrier obtained by means of the transmitter in the form of a recording device
WO2000051243A1 (en) * 1999-02-24 2000-08-31 Soo Geun You A backward decoding method of digital audio data

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Patent Citations (2)

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WO2000051243A1 (en) * 1999-02-24 2000-08-31 Soo Geun You A backward decoding method of digital audio data

Also Published As

Publication number Publication date
KR20040054736A (en) 2004-06-25
CN1575491A (en) 2005-02-02
EP1438712A2 (en) 2004-07-21
KR100944084B1 (en) 2010-02-24
WO2003036622A2 (en) 2003-05-01
JP4629977B2 (en) 2011-02-09
JP2005506583A (en) 2005-03-03
CN1319044C (en) 2007-05-30
EP1438712B1 (en) 2005-12-21
DE60208227T2 (en) 2006-07-20
EP1308931A1 (en) 2003-05-07
US20040247035A1 (en) 2004-12-09
US7342944B2 (en) 2008-03-11
DE60208227D1 (en) 2006-01-26

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