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NO20090400L - Audiokoder, audiodekoder og audioprosessor med en dynamisk, variabel forvrengningskarakteristikk - Google Patents

Audiokoder, audiodekoder og audioprosessor med en dynamisk, variabel forvrengningskarakteristikk

Info

Publication number
NO20090400L
NO20090400L NO20090400A NO20090400A NO20090400L NO 20090400 L NO20090400 L NO 20090400L NO 20090400 A NO20090400 A NO 20090400A NO 20090400 A NO20090400 A NO 20090400A NO 20090400 L NO20090400 L NO 20090400L
Authority
NO
Norway
Prior art keywords
audio
filter
distortion characteristic
signal
processor
Prior art date
Application number
NO20090400A
Other languages
English (en)
Other versions
NO340436B1 (no
Inventor
Gerald Schuller
Juergen Herre
Ulrich Kramer
Jens Hirschfeld
Bernhard Grill
Markus Multrus
Stefan Bayer
Stefan Wabnik
Original Assignee
Fraunhofer Ges Forschung
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 EP06013604A external-priority patent/EP1873754B1/en
Priority claimed from US11/428,297 external-priority patent/US7873511B2/en
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of NO20090400L publication Critical patent/NO20090400L/no
Publication of NO340436B1 publication Critical patent/NO340436B1/no

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
    • G10L19/04—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
    • 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
    • G10L19/04—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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • 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
    • G10L19/02—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 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
    • G10L19/04—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 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
    • G10L19/04—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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

En audiokoder, en audiodekoder eller en audioprosessor omfatter et filter (12) for å generere et filtrert audiosignal, idet filteret har en variabel forvrengningskarakteristikk som er regulerbar som svar på et tidsvarierende styresignal (16), idet styresignalet indikerer en liten eller ingen forvrengningskarakteristikk eller en relativt høy forvrengningskarakteristikk. Videre er en styreenhet (18) tilkoplet for å tilveiebringe det tidsvarierende styresignal som avhenger av audiosignalet. Det filtrerte audiosignal kan innføres i en kodingsprosessor (22) med forskjellige kodingsalgoritmer, hvorav én er en kodingsalgoritme tilpasset et spesifikt signalmønster. Alternativt er filteret et postfilter som mottar et dekodet audiosignal.
NO20090400A 2006-06-30 2009-01-27 Audiokoder, audiodekoder og audioprosessor med en dynamisk, variabel forvrengningskarakteristikk NO340436B1 (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06013604A EP1873754B1 (en) 2006-06-30 2006-06-30 Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
US11/428,297 US7873511B2 (en) 2006-06-30 2006-06-30 Audio encoder, audio decoder and audio processor having a dynamically variable warping characteristic
PCT/EP2007/004401 WO2008000316A1 (en) 2006-06-30 2007-05-16 Audio encoder, audio decoder and audio processor having a dynamically variable harping characteristic

Publications (2)

Publication Number Publication Date
NO20090400L true NO20090400L (no) 2009-01-27
NO340436B1 NO340436B1 (no) 2017-04-24

Family

ID=38509999

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20090400A NO340436B1 (no) 2006-06-30 2009-01-27 Audiokoder, audiodekoder og audioprosessor med en dynamisk, variabel forvrengningskarakteristikk

Country Status (17)

Country Link
EP (1) EP2038879B1 (no)
JP (1) JP5205373B2 (no)
KR (1) KR101145578B1 (no)
AR (1) AR061696A1 (no)
AU (2) AU2007264175B2 (no)
BR (1) BRPI0712625B1 (no)
CA (1) CA2656423C (no)
ES (1) ES2559307T3 (no)
HK (1) HK1128811A1 (no)
IL (1) IL195983A (no)
MX (1) MX2008016163A (no)
MY (1) MY142675A (no)
NO (1) NO340436B1 (no)
PL (1) PL2038879T3 (no)
RU (1) RU2418322C2 (no)
TW (1) TWI348683B (no)
WO (1) WO2008000316A1 (no)

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MY154452A (en) 2008-07-11 2015-06-15 Fraunhofer Ges Forschung An apparatus and a method for decoding an encoded audio signal
EP2144231A1 (en) * 2008-07-11 2010-01-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Low bitrate audio encoding/decoding scheme with common preprocessing
CN103077722B (zh) * 2008-07-11 2015-07-22 弗劳恩霍夫应用研究促进协会 提供时间扭曲激活信号以及使用该时间扭曲激活信号对音频信号编码
FR2949582B1 (fr) * 2009-09-02 2011-08-26 Alcatel Lucent Procede pour rendre un signal musical compatible avec un codec a transmission discontinue ; et dispositif pour la mise en ?uvre de ce procede
BR112013011312A2 (pt) * 2010-11-10 2019-09-24 Koninl Philips Electronics Nv método para estimar um padrão em um sinal (s) tendo um componente periódico, semiperiódico ou virtualmente periódico, dispositivo para estimar um padrão em um sinal (s) tendo um componente periódico, semiperiódico ou virtualmente periódico e programa de computador
WO2012072278A1 (en) * 2010-12-03 2012-06-07 Telefonaktiebolaget L M Ericsson (Publ) Source signal adaptive frame aggregation
TWI716169B (zh) * 2010-12-03 2021-01-11 美商杜比實驗室特許公司 音頻解碼裝置、音頻解碼方法及音頻編碼方法
EP2860729A4 (en) * 2012-06-04 2016-03-02 Samsung Electronics Co Ltd METHOD AND DEVICE FOR AUDIO CODING, METHOD AND DEVICE FOR AUDIO DECODING, AND MULTIMEDIA DEVICE EMPLOYING THEM
TWI517142B (zh) * 2012-07-02 2016-01-11 Sony Corp Audio decoding apparatus and method, audio coding apparatus and method, and program
US9548056B2 (en) 2012-12-19 2017-01-17 Dolby International Ab Signal adaptive FIR/IIR predictors for minimizing entropy
JP5969727B2 (ja) * 2013-04-29 2016-08-17 ドルビー ラボラトリーズ ライセンシング コーポレイション 動的閾値を用いた周波数帯域圧縮
CN106409300B (zh) 2014-03-19 2019-12-24 华为技术有限公司 用于信号处理的方法和装置
EP2980794A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder and decoder using a frequency domain processor and a time domain processor
EP2980795A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoding and decoding using a frequency domain processor, a time domain processor and a cross processor for initialization of the time domain processor
RU2628459C1 (ru) * 2016-10-13 2017-08-17 Общество с ограниченной ответственностью "Силовая электроника" Способ декодирования LDPC-кодов и устройство для его осуществления
WO2020086623A1 (en) * 2018-10-22 2020-04-30 Zeev Neumeier Hearing aid

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JP4132109B2 (ja) * 1995-10-26 2008-08-13 ソニー株式会社 音声信号の再生方法及び装置、並びに音声復号化方法及び装置、並びに音声合成方法及び装置
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JP2000322095A (ja) * 1999-05-13 2000-11-24 Mitsubishi Electric Corp 音声復号装置
US7110953B1 (en) * 2000-06-02 2006-09-19 Agere Systems Inc. Perceptual coding of audio signals using separated irrelevancy reduction and redundancy reduction
CA2457988A1 (en) * 2004-02-18 2005-08-18 Voiceage Corporation Methods and devices for audio compression based on acelp/tcx coding and multi-rate lattice vector quantization
US7587254B2 (en) 2004-04-23 2009-09-08 Nokia Corporation Dynamic range control and equalization of digital audio using warped processing

Also Published As

Publication number Publication date
AU2011200461A1 (en) 2011-02-24
MY142675A (en) 2010-12-15
KR101145578B1 (ko) 2012-05-16
IL195983A (en) 2012-01-31
EP2038879B1 (en) 2015-11-04
TWI348683B (en) 2011-09-11
BRPI0712625A2 (pt) 2012-10-16
TW200809771A (en) 2008-02-16
RU2009103010A (ru) 2010-08-10
AU2007264175A1 (en) 2008-01-03
PL2038879T3 (pl) 2016-04-29
AU2011200461B2 (en) 2011-11-10
RU2418322C2 (ru) 2011-05-10
ES2559307T3 (es) 2016-02-11
NO340436B1 (no) 2017-04-24
HK1128811A1 (zh) 2009-11-06
WO2008000316A8 (en) 2009-02-26
MX2008016163A (es) 2009-02-04
JP5205373B2 (ja) 2013-06-05
EP2038879A1 (en) 2009-03-25
KR20090025304A (ko) 2009-03-10
JP2009541802A (ja) 2009-11-26
IL195983A0 (en) 2009-09-01
CA2656423A1 (en) 2008-01-03
AU2007264175B2 (en) 2011-03-03
AR061696A1 (es) 2008-09-17
BRPI0712625B1 (pt) 2023-10-10
WO2008000316A1 (en) 2008-01-03
CA2656423C (en) 2013-12-17

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