AU2002215282A1 - Enhancing the performance of coding systems that use high frequency reconstruction methods - Google Patents

Enhancing the performance of coding systems that use high frequency reconstruction methods

Info

Publication number
AU2002215282A1
AU2002215282A1 AU2002215282A AU1528202A AU2002215282A1 AU 2002215282 A1 AU2002215282 A1 AU 2002215282A1 AU 2002215282 A AU2002215282 A AU 2002215282A AU 1528202 A AU1528202 A AU 1528202A AU 2002215282 A1 AU2002215282 A1 AU 2002215282A1
Authority
AU
Australia
Prior art keywords
frequency
audio signal
high frequency
crossover frequency
core encoder
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.)
Abandoned
Application number
AU2002215282A
Inventor
Andreas Ehret
Fredrik Henn
Michael Schug
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.)
Coding Technologies Sweden AB
Original Assignee
Coding Technologies Sweden AB
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 Coding Technologies Sweden AB filed Critical Coding Technologies Sweden AB
Publication of AU2002215282A1 publication Critical patent/AU2002215282A1/en
Abandoned legal-status Critical Current

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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • 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
    • G10L19/18—Vocoders using multiple modes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Abstract

An apparatus for encoding an audio signal to obtain an encoded audio signal to be used by a decoder having a high frequency reconstruction module for performing a high frequency reconstruction for a frequency range above a crossover frequency includes, a core encoder for encoding a lower frequency band of the audio signal up to the crossover frequency, the crossover frequency being variable, and the core encoder being operable on a block-wise frame by frame basis, and a crossover frequency control module for estimating, dependent on a measure of the degree of difficulty for encoding the audio signal by the core encoder and/or a boarder between a tonal and a noise-like frequency range of the audio signal, the crossover frequency to be selected by the core encoder for a frame of a series of subsequent frames, so that the crossover frequency is variable adaptively over time for the series of subsequent frames.
AU2002215282A 2000-11-15 2001-11-14 Enhancing the performance of coding systems that use high frequency reconstruction methods Abandoned AU2002215282A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0004187 2000-11-15
SE0004187A SE0004187D0 (en) 2000-11-15 2000-11-15 Enhancing the performance of coding systems that use high frequency reconstruction methods
PCT/SE2001/002533 WO2002041302A1 (en) 2000-11-15 2001-11-14 Enhancing the performance of coding systems that use high frequency reconstruction methods

Publications (1)

Publication Number Publication Date
AU2002215282A1 true AU2002215282A1 (en) 2002-05-27

Family

ID=20281835

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002215282A Abandoned AU2002215282A1 (en) 2000-11-15 2001-11-14 Enhancing the performance of coding systems that use high frequency reconstruction methods

Country Status (15)

Country Link
US (1) US7050972B2 (en)
EP (1) EP1334484B1 (en)
JP (6) JP3983668B2 (en)
KR (1) KR100551862B1 (en)
CN (1) CN1232950C (en)
AT (1) ATE267445T1 (en)
AU (1) AU2002215282A1 (en)
DE (1) DE60103424T2 (en)
DK (1) DK1334484T3 (en)
ES (1) ES2218462T3 (en)
HK (1) HK1058096A1 (en)
PT (1) PT1334484E (en)
SE (1) SE0004187D0 (en)
TR (1) TR200401631T4 (en)
WO (1) WO2002041302A1 (en)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR433901A0 (en) 2001-04-10 2001-05-17 Lake Technology Limited High frequency signal construction method
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
SE0202159D0 (en) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
EP1423847B1 (en) * 2001-11-29 2005-02-02 Coding Technologies AB Reconstruction of high frequency components
US7240001B2 (en) 2001-12-14 2007-07-03 Microsoft Corporation Quality improvement techniques in an audio encoder
US6934677B2 (en) 2001-12-14 2005-08-23 Microsoft Corporation Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands
US20030187663A1 (en) 2002-03-28 2003-10-02 Truman Michael Mead Broadband frequency translation for high frequency regeneration
KR100605824B1 (en) 2002-05-13 2006-07-31 삼성전자주식회사 Broadcasting service method for mobile telecommunication system using code division multiple access
US7447631B2 (en) 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
US7502743B2 (en) * 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
SE0202770D0 (en) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method of reduction of aliasing is introduced by spectral envelope adjustment in real-valued filterbanks
US7318027B2 (en) 2003-02-06 2008-01-08 Dolby Laboratories Licensing Corporation Conversion of synthesized spectral components for encoding and low-complexity transcoding
FR2852172A1 (en) * 2003-03-04 2004-09-10 France Telecom Audio signal coding method, involves coding one part of audio signal frequency spectrum with core coder and another part with extension coder, where part of spectrum is coded with both core coder and extension coder
JP2004309921A (en) * 2003-04-09 2004-11-04 Sony Corp Device, method, and program for encoding
US7318035B2 (en) * 2003-05-08 2008-01-08 Dolby Laboratories Licensing Corporation Audio coding systems and methods using spectral component coupling and spectral component regeneration
DE10328777A1 (en) * 2003-06-25 2005-01-27 Coding Technologies Ab Apparatus and method for encoding an audio signal and apparatus and method for decoding an encoded audio signal
US20050004793A1 (en) * 2003-07-03 2005-01-06 Pasi Ojala Signal adaptation for higher band coding in a codec utilizing band split coding
US20050018796A1 (en) * 2003-07-07 2005-01-27 Sande Ravindra Kumar Method of combining an analysis filter bank following a synthesis filter bank and structure therefor
US7460990B2 (en) * 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
DE102004009949B4 (en) 2004-03-01 2006-03-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for determining an estimated value
NZ562190A (en) * 2005-04-01 2010-06-25 Qualcomm Inc Systems, methods, and apparatus for highband burst suppression
PT1875463T (en) 2005-04-22 2019-01-24 Qualcomm Inc Systems, methods, and apparatus for gain factor smoothing
JP4907522B2 (en) * 2005-04-28 2012-03-28 パナソニック株式会社 Speech coding apparatus and speech coding method
US7548853B2 (en) * 2005-06-17 2009-06-16 Shmunk Dmitry V Scalable compressed audio bit stream and codec using a hierarchical filterbank and multichannel joint coding
US7831434B2 (en) * 2006-01-20 2010-11-09 Microsoft Corporation Complex-transform channel coding with extended-band frequency coding
US7953604B2 (en) * 2006-01-20 2011-05-31 Microsoft Corporation Shape and scale parameters for extended-band frequency coding
US8190425B2 (en) * 2006-01-20 2012-05-29 Microsoft Corporation Complex cross-correlation parameters for multi-channel audio
US20080109215A1 (en) * 2006-06-26 2008-05-08 Chi-Min Liu High frequency reconstruction by linear extrapolation
CN101512639B (en) * 2006-09-13 2012-03-14 艾利森电话股份有限公司 Method and equipment for voice/audio transmitter and receiver
JP4918841B2 (en) 2006-10-23 2012-04-18 富士通株式会社 Encoding system
US8295507B2 (en) 2006-11-09 2012-10-23 Sony Corporation Frequency band extending apparatus, frequency band extending method, player apparatus, playing method, program and recording medium
KR101355376B1 (en) 2007-04-30 2014-01-23 삼성전자주식회사 Method and apparatus for encoding and decoding high frequency band
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
MX2010001394A (en) 2007-08-27 2010-03-10 Ericsson Telefon Ab L M Adaptive transition frequency between noise fill and bandwidth extension.
KR101235830B1 (en) * 2007-12-06 2013-02-21 한국전자통신연구원 Apparatus for enhancing quality of speech codec and method therefor
EP2077551B1 (en) * 2008-01-04 2011-03-02 Dolby Sweden AB Audio encoder and decoder
CN101281748B (en) * 2008-05-14 2011-06-15 武汉大学 Method for filling opening son (sub) tape using encoding index as well as method for generating encoding index
MX2011000370A (en) 2008-07-11 2011-03-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal.
RU2494477C2 (en) 2008-07-11 2013-09-27 Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен Форшунг Е.Ф. Apparatus and method of generating bandwidth extension output data
AU2009267459B2 (en) 2008-07-11 2014-01-23 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Audio encoder, audio decoder, methods for encoding and decoding an audio signal, audio stream and computer program
AU2009267507B2 (en) 2008-07-11 2012-08-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and discriminator for classifying different segments of a signal
US8326640B2 (en) * 2008-08-26 2012-12-04 Broadcom Corporation Method and system for multi-band amplitude estimation and gain control in an audio CODEC
JP2010079275A (en) * 2008-08-29 2010-04-08 Sony Corp Device and method for expanding frequency band, device and method for encoding, device and method for decoding, and program
KR101369267B1 (en) 2008-12-15 2014-03-04 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. Audio encoder and bandwidth extension decoder
JP5446258B2 (en) * 2008-12-26 2014-03-19 富士通株式会社 Audio encoding device
CA3231911A1 (en) 2009-01-16 2010-07-22 Dolby International Ab Cross product enhanced harmonic transposition
JP4977157B2 (en) * 2009-03-06 2012-07-18 株式会社エヌ・ティ・ティ・ドコモ Sound signal encoding method, sound signal decoding method, encoding device, decoding device, sound signal processing system, sound signal encoding program, and sound signal decoding program
BR122019023947B1 (en) 2009-03-17 2021-04-06 Dolby International Ab CODING SYSTEM, DECODING SYSTEM, METHOD FOR CODING A STEREO SIGNAL FOR A BIT FLOW SIGNAL AND METHOD FOR DECODING A BIT FLOW SIGNAL FOR A STEREO SIGNAL
JP4932917B2 (en) * 2009-04-03 2012-05-16 株式会社エヌ・ティ・ティ・ドコモ Speech decoding apparatus, speech decoding method, and speech decoding program
US11657788B2 (en) 2009-05-27 2023-05-23 Dolby International Ab Efficient combined harmonic transposition
TWI484481B (en) 2009-05-27 2015-05-11 杜比國際公司 Systems and methods for generating a high frequency component of a signal from a low frequency component of the signal, a set-top box, a computer program product and storage medium thereof
US9105300B2 (en) 2009-10-19 2015-08-11 Dolby International Ab Metadata time marking information for indicating a section of an audio object
CN102947882B (en) * 2010-04-16 2015-06-17 弗劳恩霍夫应用研究促进协会 Apparatus and method for generating a wideband signal using guided bandwidth extension and blind bandwidth extension
KR102159194B1 (en) * 2010-07-19 2020-09-23 돌비 인터네셔널 에이비 Processing of audio signals during high frequency reconstruction
EP2466580A1 (en) * 2010-12-14 2012-06-20 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Encoder and method for predictively encoding, decoder and method for decoding, system and method for predictively encoding and decoding and predictively encoded information signal
CN102208188B (en) 2011-07-13 2013-04-17 华为技术有限公司 Audio signal encoding-decoding method and device
US9437213B2 (en) * 2012-03-05 2016-09-06 Malaspina Labs (Barbados) Inc. Voice signal enhancement
TWI591620B (en) * 2012-03-21 2017-07-11 三星電子股份有限公司 Method of generating high frequency noise
EP2682941A1 (en) * 2012-07-02 2014-01-08 Technische Universität Ilmenau Device, method and computer program for freely selectable frequency shifts in the sub-band domain
WO2014068817A1 (en) * 2012-10-31 2014-05-08 パナソニック株式会社 Audio signal coding device and audio signal decoding device
CA2898677C (en) 2013-01-29 2017-12-05 Stefan Dohla Low-frequency emphasis for lpc-based coding in frequency domain
TWI546799B (en) * 2013-04-05 2016-08-21 杜比國際公司 Audio encoder and decoder
KR102243688B1 (en) 2013-04-05 2021-04-27 돌비 인터네셔널 에이비 Audio encoder and decoder for interleaved waveform coding
RU2665214C1 (en) 2013-04-05 2018-08-28 Долби Интернэшнл Аб Stereophonic coder and decoder of audio signals
JP6305694B2 (en) 2013-05-31 2018-04-04 クラリオン株式会社 Signal processing apparatus and signal processing method
JP6248190B2 (en) * 2013-06-21 2017-12-13 フラウンホーファーゲゼルシャフト ツール フォルデルング デル アンゲヴァンテン フォルシユング エー．フアー． Method and apparatus for obtaining spectral coefficients for replacement frames of an audio signal, audio decoder, audio receiver and system for transmitting an audio signal
KR102467707B1 (en) 2013-09-12 2022-11-17 돌비 인터네셔널 에이비 Time-alignment of qmf based processing data
CN104681029B (en) * 2013-11-29 2018-06-05 华为技术有限公司 The coding method of stereo phase parameter and device
US20150194157A1 (en) * 2014-01-06 2015-07-09 Nvidia Corporation System, method, and computer program product for artifact reduction in high-frequency regeneration audio signals
KR102250472B1 (en) * 2016-03-07 2021-05-12 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. Hybrid Concealment Method: Combining Frequency and Time Domain Packet Loss Concealment in Audio Codecs
US20230052666A1 (en) * 2020-01-15 2023-02-16 Dolby International Ab Adaptive streaming of media content with bitrate switching
EP4189674A1 (en) * 2020-07-30 2023-06-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for encoding an audio signal or for decoding an encoded audio scene

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158751A (en) * 1978-02-06 1979-06-19 Bode Harald E W Analog speech encoder and decoder
JPS595297A (en) * 1982-07-01 1984-01-12 日本電気株式会社 Band sharing type vocoder
NL8700985A (en) * 1987-04-27 1988-11-16 Philips Nv SYSTEM FOR SUB-BAND CODING OF A DIGITAL AUDIO SIGNAL.
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
JP3297750B2 (en) * 1992-03-18 2002-07-02 ソニー株式会社 Encoding method
JP3218679B2 (en) * 1992-04-15 2001-10-15 ソニー株式会社 High efficiency coding method
US5404377A (en) * 1994-04-08 1995-04-04 Moses; Donald W. Simultaneous transmission of data and audio signals by means of perceptual coding
JP3277692B2 (en) * 1994-06-13 2002-04-22 ソニー株式会社 Information encoding method, information decoding method, and information recording medium
JP3557674B2 (en) * 1994-12-15 2004-08-25 ソニー株式会社 High efficiency coding method and apparatus
US5646961A (en) * 1994-12-30 1997-07-08 Lucent Technologies Inc. Method for noise weighting filtering
JPH09172376A (en) * 1995-12-20 1997-06-30 Hitachi Ltd Quantization bit allocation circuit
JP3255022B2 (en) * 1996-07-01 2002-02-12 日本電気株式会社 Adaptive transform coding and adaptive transform decoding
US6490562B1 (en) * 1997-04-09 2002-12-03 Matsushita Electric Industrial Co., Ltd. Method and system for analyzing voices
SE512719C2 (en) * 1997-06-10 2000-05-02 Lars Gustaf Liljeryd A method and apparatus for reducing data flow based on harmonic bandwidth expansion
US5928342A (en) * 1997-07-02 1999-07-27 Creative Technology Ltd. Audio effects processor integrated on a single chip with a multiport memory onto which multiple asynchronous digital sound samples can be concurrently loaded
DE19730130C2 (en) * 1997-07-14 2002-02-28 Fraunhofer Ges Forschung Method for coding an audio signal
US6385548B2 (en) * 1997-12-12 2002-05-07 Motorola, Inc. Apparatus and method for detecting and characterizing signals in a communication system
US6757395B1 (en) * 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
WO2002029784A1 (en) * 2000-10-02 2002-04-11 Clarity, Llc Audio visual speech processing

Also Published As

Publication number Publication date
DE60103424D1 (en) 2004-06-24
EP1334484B1 (en) 2004-05-19
ES2218462T3 (en) 2004-11-16
HK1058096A1 (en) 2004-04-30
KR20030076576A (en) 2003-09-26
US7050972B2 (en) 2006-05-23
CN1232950C (en) 2005-12-21
US20020103637A1 (en) 2002-08-01
JP2004514180A (en) 2004-05-13
TR200401631T4 (en) 2004-09-21
JP5933965B2 (en) 2016-06-15
DK1334484T3 (en) 2004-08-09
EP1334484A1 (en) 2003-08-13
JP6368740B2 (en) 2018-08-01
JP4991397B2 (en) 2012-08-01
CN1475010A (en) 2004-02-11
JP2016189015A (en) 2016-11-04
JP2012093774A (en) 2012-05-17
ATE267445T1 (en) 2004-06-15
JP6592148B2 (en) 2019-10-16
JP2014089472A (en) 2014-05-15
KR100551862B1 (en) 2006-02-13
PT1334484E (en) 2004-09-30
JP2007293354A (en) 2007-11-08
JP3983668B2 (en) 2007-09-26
JP6207404B2 (en) 2017-10-04
DE60103424T2 (en) 2005-06-16
WO2002041302A1 (en) 2002-05-23
SE0004187D0 (en) 2000-11-15
JP2018185530A (en) 2018-11-22

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