NO20064092L - Audioomkoding - Google Patents

Audioomkoding

Info

Publication number
NO20064092L
NO20064092L NO20064092A NO20064092A NO20064092L NO 20064092 L NO20064092 L NO 20064092L NO 20064092 A NO20064092 A NO 20064092A NO 20064092 A NO20064092 A NO 20064092A NO 20064092 L NO20064092 L NO 20064092L
Authority
NO
Norway
Prior art keywords
audio values
sequence
audio
parameterizations
versions
Prior art date
Application number
NO20064092A
Other languages
English (en)
Other versions
NO338874B1 (no
Inventor
Manfred Lutzky
Gerald Schuller
Stefan Wabnik
Jens Hirschfeld
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
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of NO20064092L publication Critical patent/NO20064092L/no
Publication of NO338874B1 publication Critical patent/NO338874B1/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
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • 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)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Cereal-Derived Products (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereophonic System (AREA)

Abstract

Koding av et audiosignal bestående av en frekvens av audioverdier til et kodet signal omfatter bestemmelse av en første lytteterskel for en blokk av audioverdier i sekvensen av audioverdier og en andre lytteterskel for en andre blokk av audioverdisekvensen av audioverdier; beregning av en versjon av en første parameterisering av et parameteriserbart filter slik at overføringsfunksjonen av denne grovt vil korrespondere til den inverse av størrelsen av den første lytteterskel og en versjon av en andre parameterisering for det paraineteriserbare filter slik at overføringsfunksjonen av denne grovt vil korrespondere til den inverse av størrelsen av den andre lytteterskel; filtrering av en forutbestemt blokk audioverdier i sekvensen av audioverdier med parameteriserbare filter ved å benytte en forutbestemt parameterisering som på en forutbestemt måte vil avhenge av versjonen av den andre parameterisering for å fremskaffe en blokk av filtrerte audioverdier som korresponderer til den forutbestemte blokk; kvantisering av de filtrerte audioverdier for å fremskaffe en blokk av kvantiserte, filtrerte audioverdier; danning av en kombinasjon av versjonen av den første parameterisering og versjonen av den andre parameterisering omfattende i det minste en differanse mellom versjonen av den første paraineterisering og versjonen av den andre paraineterisering; og integrering av innformasjon fra hvilken de kvantiserte, filtrerte audioverdier og en versjon av den første parameterisering kan fremskaffes og som inkluderer kombinasjonen inn i det kodede signal.
NO20064092A 2004-02-13 2006-09-12 Anordninger og fremgangsmåter for audioomkoding NO338874B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007191A DE102004007191B3 (de) 2004-02-13 2004-02-13 Audiocodierung
PCT/EP2005/001363 WO2005078705A1 (de) 2004-02-13 2005-02-10 Audiocodierung

Publications (2)

Publication Number Publication Date
NO20064092L true NO20064092L (no) 2006-11-10
NO338874B1 NO338874B1 (no) 2016-10-31

Family

ID=34813339

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20064092A NO338874B1 (no) 2004-02-13 2006-09-12 Anordninger og fremgangsmåter for audioomkoding

Country Status (17)

Country Link
US (1) US7716042B2 (no)
EP (1) EP1697928B1 (no)
JP (1) JP4444297B2 (no)
KR (1) KR100848370B1 (no)
CN (1) CN1918631B (no)
AT (1) ATE441919T1 (no)
AU (1) AU2005213770B2 (no)
BR (1) BRPI0506628B1 (no)
CA (1) CA2556325C (no)
DE (2) DE102004007191B3 (no)
DK (1) DK1697928T3 (no)
ES (1) ES2331889T3 (no)
HK (1) HK1094079A1 (no)
IL (1) IL177163A (no)
NO (1) NO338874B1 (no)
RU (1) RU2346339C2 (no)
WO (1) WO2005078705A1 (no)

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DE102004009955B3 (de) * 2004-03-01 2005-08-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Ermitteln einer Quantisierer-Schrittweite
DE102006022346B4 (de) * 2006-05-12 2008-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Informationssignalcodierung
WO2008072524A1 (ja) 2006-12-13 2008-06-19 Panasonic Corporation オーディオ信号符号化方法及び復号化方法
US8190440B2 (en) * 2008-02-29 2012-05-29 Broadcom Corporation Sub-band codec with native voice activity detection
BR112012007803B1 (pt) * 2009-10-08 2022-03-15 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Decodificador de sinal de áudio multimodal, codificador de sinal de áudio multimodal e métodos usando uma configuração de ruído com base em codificação de previsão linear
ES2935911T3 (es) 2010-04-09 2023-03-13 Dolby Int Ab Descodificación estéreo de predicción compleja basada en MDCT
US9060223B2 (en) 2013-03-07 2015-06-16 Aphex, Llc Method and circuitry for processing audio signals
EP2830065A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for decoding an encoded audio signal using a cross-over filter around a transition frequency

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DE3506912A1 (de) 1985-02-27 1986-08-28 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Verfahren zur uebertragung eines audiosignals
DE3820037A1 (de) * 1988-06-13 1989-12-14 Ant Nachrichtentech Bildcodierverfahren und einrichtung
DE3820038A1 (de) 1988-06-13 1989-12-14 Ant Nachrichtentech Verfahren zur aufbereitung und uebertragung einer bildsequenz
US5581653A (en) * 1993-08-31 1996-12-03 Dolby Laboratories Licensing Corporation Low bit-rate high-resolution spectral envelope coding for audio encoder and decoder
TW295747B (no) * 1994-06-13 1997-01-11 Sony Co Ltd
DE19537338C2 (de) * 1995-10-06 2003-05-22 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Codieren von Audiosignalen
GB2307833B (en) 1995-12-01 2000-06-07 Geco As A data compression method and apparatus for seismic data
CA2259374A1 (en) 1996-07-05 1998-01-15 The Victoria University Of Manchester Speech synthesis system
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US6131084A (en) 1997-03-14 2000-10-10 Digital Voice Systems, Inc. Dual subframe quantization of spectral magnitudes
EP0878790A1 (en) * 1997-05-15 1998-11-18 Hewlett-Packard Company Voice coding system and method
KR100335609B1 (ko) 1997-11-20 2002-10-04 삼성전자 주식회사 비트율조절이가능한오디오부호화/복호화방법및장치
TW536692B (en) 1999-04-16 2003-06-11 Dolby Lab Licensing Corp Using gain-adaptive quantization and non-uniform symbol lengths for improved audio coding
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ES2599637T3 (es) * 2002-03-27 2017-02-02 Panasonic Intellectual Property Corporation Of America Sistema de codificación y decodificación de longitud variable y procedimiento de codificación y decodificación de longitud variable
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JP2007099007A (ja) * 2005-09-30 2007-04-19 Auto Network Gijutsu Kenkyusho:Kk ワイヤハーネスの配索構造

Also Published As

Publication number Publication date
CN1918631A (zh) 2007-02-21
DE502005008041D1 (de) 2009-10-15
NO338874B1 (no) 2016-10-31
ES2331889T3 (es) 2010-01-19
CA2556325C (en) 2010-07-13
RU2006132739A (ru) 2008-03-20
CA2556325A1 (en) 2005-08-25
BRPI0506628B1 (pt) 2018-10-09
JP2007522511A (ja) 2007-08-09
KR100848370B1 (ko) 2008-07-24
AU2005213770B2 (en) 2008-05-15
US7716042B2 (en) 2010-05-11
DE102004007191B3 (de) 2005-09-01
AU2005213770A1 (en) 2005-08-25
BRPI0506628A (pt) 2007-05-02
RU2346339C2 (ru) 2009-02-10
JP4444297B2 (ja) 2010-03-31
IL177163A (en) 2010-11-30
ATE441919T1 (de) 2009-09-15
EP1697928B1 (de) 2009-09-02
US20070016402A1 (en) 2007-01-18
KR20060114002A (ko) 2006-11-03
IL177163A0 (en) 2006-12-10
DK1697928T3 (da) 2009-12-07
EP1697928A1 (de) 2006-09-06
WO2005078705A1 (de) 2005-08-25
HK1094079A1 (en) 2007-03-16
CN1918631B (zh) 2010-07-28

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