NO20092125L - Innretning og fremgangsmate for etterbehandling av spektralverdier, samt koder og dekoder for audiosignaler - Google Patents

Innretning og fremgangsmate for etterbehandling av spektralverdier, samt koder og dekoder for audiosignaler

Info

Publication number
NO20092125L
NO20092125L NO20092125A NO20092125A NO20092125L NO 20092125 L NO20092125 L NO 20092125L NO 20092125 A NO20092125 A NO 20092125A NO 20092125 A NO20092125 A NO 20092125A NO 20092125 L NO20092125 L NO 20092125L
Authority
NO
Norway
Prior art keywords
spectral values
spectral
audio signal
blocks
sequence
Prior art date
Application number
NO20092125A
Other languages
English (en)
Other versions
NO341615B1 (no
Inventor
Harald Popp
Johannes Hilpert
Christian Ertel
Bernd Edler
Ralf Geiger
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 NO20092125L publication Critical patent/NO20092125L/no
Publication of NO341615B1 publication Critical patent/NO341615B1/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
    • G10L19/02—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
    • G10L19/26—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
    • 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
    • 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
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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

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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Error Detection And Correction (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

For å etterbehandle spektralverdier som er basert på en første transformasjonsalgoritme for å omforme audiosignalet til en spektral representasjon, blir først en sekvens av blokker av spektralverdiene som representerer en sekvens av blokker av prøver av audiosignalet gjort tilgjengelig. Derpå blir en vektet summering av spektralverdier fra sekvensen av blokker av spektralverdier utført for å oppnå en sekvens av blokker av etterbehandlede spektralverdier, hvor kombinasjonen blir utført slik at for å beregne en etterbehandlet spektralverdi for et frekvensbånd og en tidsvarighet, blir en spektralverdi fra sekvensen av blokker for frekvensbåndet og tidsvarigheten og en spektralverdi for et annet frekvensbånd eller en annen tidsvarighet brukt, hvor kombinasjonen ytterligere blir utført slik at slike vektingsfaktorer blir benyttet at de etterbehandlede spektralverdier blir en tilnærming til spektralverdiene siden de blir oppnådd ved å omforme audiosignalet til en spektral representasjon ved å bruke en andre transformasjonsalgoritme som er forskjellig fra den første transformasjonsalgoritme. De etterbehandlede spektralverdier blir i særdeleshet benyttet henholdsvis innenfor en forskjellsdannelse innenfor en skalerbar koder eller for en addisjon innenfor en skalerbar dekoder.
NO20092125A 2006-11-02 2009-05-29 Innretning og fremgangsmåte for etterbehandling av spektralverdier, samt koder og dekoder for audiosignaler NO341615B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051673A DE102006051673A1 (de) 2006-11-02 2006-11-02 Vorrichtung und Verfahren zum Nachbearbeiten von Spektralwerten und Encodierer und Decodierer für Audiosignale
PCT/EP2007/008477 WO2008052627A1 (en) 2006-11-02 2007-09-28 Device and method for postprocessing spectral values and encoder and decoder for audio signals

Publications (2)

Publication Number Publication Date
NO20092125L true NO20092125L (no) 2009-05-29
NO341615B1 NO341615B1 (no) 2017-12-11

Family

ID=38962597

Family Applications (2)

Application Number Title Priority Date Filing Date
NO20092125A NO341615B1 (no) 2006-11-02 2009-05-29 Innretning og fremgangsmåte for etterbehandling av spektralverdier, samt koder og dekoder for audiosignaler
NO20171179A NO343261B1 (no) 2006-11-02 2017-07-14 System og metode for etterbehandling av spektrale verdier, koder og dekoder for lydsignaler

Family Applications After (1)

Application Number Title Priority Date Filing Date
NO20171179A NO343261B1 (no) 2006-11-02 2017-07-14 System og metode for etterbehandling av spektrale verdier, koder og dekoder for lydsignaler

Country Status (22)

Country Link
US (1) US8321207B2 (no)
EP (2) EP2264699B1 (no)
JP (1) JP5301451B2 (no)
KR (1) KR101090541B1 (no)
CN (1) CN101553870B (no)
AT (1) ATE489703T1 (no)
AU (2) AU2007315373B2 (no)
BR (1) BRPI0716308B1 (no)
CA (1) CA2668056C (no)
DE (2) DE102006051673A1 (no)
ES (2) ES2720871T3 (no)
HK (1) HK1120328A1 (no)
IL (1) IL198192A (no)
MX (1) MX2009004639A (no)
MY (2) MY181471A (no)
NO (2) NO341615B1 (no)
PL (2) PL1964111T3 (no)
PT (1) PT2264699T (no)
RU (1) RU2423740C2 (no)
TR (1) TR201903942T4 (no)
TW (1) TWI350068B (no)
WO (1) WO2008052627A1 (no)

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Also Published As

Publication number Publication date
EP1964111A1 (en) 2008-09-03
AU2011200509A1 (en) 2011-03-03
BRPI0716308B1 (pt) 2020-10-06
EP2264699B1 (en) 2018-12-19
AU2011200509B2 (en) 2011-12-08
US20100017213A1 (en) 2010-01-21
WO2008052627A1 (en) 2008-05-08
PL1964111T3 (pl) 2011-05-31
EP1964111B1 (en) 2010-11-24
EP2264699A2 (en) 2010-12-22
DE102006051673A1 (de) 2008-05-15
NO20171179A1 (no) 2009-05-29
CA2668056A1 (en) 2008-05-08
KR20090085047A (ko) 2009-08-06
EP2264699A3 (en) 2012-10-10
DE602007010721D1 (de) 2011-01-05
JP2010508550A (ja) 2010-03-18
CN101553870B (zh) 2012-07-18
MY156427A (en) 2016-02-26
AU2007315373B2 (en) 2011-03-17
TWI350068B (en) 2011-10-01
AU2007315373A8 (en) 2009-06-11
BRPI0716308A8 (pt) 2019-01-15
CA2668056C (en) 2014-07-29
NO341615B1 (no) 2017-12-11
ES2354743T3 (es) 2011-03-17
NO343261B1 (no) 2019-01-14
PL2264699T3 (pl) 2019-06-28
MY181471A (en) 2020-12-22
TR201903942T4 (tr) 2019-04-22
IL198192A0 (en) 2009-12-24
RU2009117571A (ru) 2010-12-10
IL198192A (en) 2014-05-28
CN101553870A (zh) 2009-10-07
KR101090541B1 (ko) 2011-12-08
AU2007315373A1 (en) 2008-05-08
RU2423740C2 (ru) 2011-07-10
PT2264699T (pt) 2019-04-02
ATE489703T1 (de) 2010-12-15
JP5301451B2 (ja) 2013-09-25
MX2009004639A (es) 2009-06-26
HK1120328A1 (en) 2009-03-27
BRPI0716308A2 (pt) 2015-05-19
ES2720871T3 (es) 2019-07-25
TW200836492A (en) 2008-09-01
US8321207B2 (en) 2012-11-27

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