IN2014KN01766A - - Google Patents

Info

Publication number
IN2014KN01766A
IN2014KN01766A IN1766KON2014A IN2014KN01766A IN 2014KN01766 A IN2014KN01766 A IN 2014KN01766A IN 1766KON2014 A IN1766KON2014 A IN 1766KON2014A IN 2014KN01766 A IN2014KN01766 A IN 2014KN01766A
Authority
IN
India
Prior art keywords
audio signal
adjustment unit
phase
phase adjustment
decoding
Prior art date
Application number
Inventor
Sascha Disch
Jürgen Herre
Bernd Edler
Frederik Nagel
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 IN2014KN01766A publication Critical patent/IN2014KN01766A/en

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
    • G10L19/04—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
    • 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
    • G10L19/0204—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 using subband decomposition
    • 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
    • G10L19/0212—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 using orthogonal transformation

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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

A decoder for decoding an encoded audio signal to obtain a phase adjusted audio signal is provided. The decoder comprises a decoding unit (1 10) and a phase adjustment unit (120). The decoding unit (110) is adapted to decode the encoded audio signal to obtain a decoded audio signal. The phase adjustment unit (120) is adapted to adjust the decoded audio signal to obtain the phase adjusted audio signal. The phase adjustment unit (120) is configured to receive control information depending on a vertical phase coherence of the encoded audio signal. Moreover the phase adjustment unit (120) is adapted to adjust the decoded audio signal based on the control information.
IN1766KON2014 2012-02-27 2013-02-26 IN2014KN01766A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261603773P 2012-02-27 2012-02-27
EP12178265.0A EP2631906A1 (en) 2012-02-27 2012-07-27 Phase coherence control for harmonic signals in perceptual audio codecs
PCT/EP2013/053831 WO2013127801A1 (en) 2012-02-27 2013-02-26 Phase coherence control for harmonic signals in perceptual audio codecs

Publications (1)

Publication Number Publication Date
IN2014KN01766A true IN2014KN01766A (en) 2015-10-23

Family

ID=47076051

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1766KON2014 IN2014KN01766A (en) 2012-02-27 2013-02-26

Country Status (14)

Country Link
US (1) US10818304B2 (en)
EP (2) EP2631906A1 (en)
JP (1) JP5873936B2 (en)
KR (1) KR101680953B1 (en)
CN (1) CN104170009B (en)
AU (1) AU2013225076B2 (en)
BR (1) BR112014021054B1 (en)
CA (1) CA2865651C (en)
ES (1) ES2673319T3 (en)
IN (1) IN2014KN01766A (en)
MX (1) MX338526B (en)
RU (1) RU2612584C2 (en)
TR (1) TR201808452T4 (en)
WO (1) WO2013127801A1 (en)

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Also Published As

Publication number Publication date
JP2015508911A (en) 2015-03-23
KR20140130225A (en) 2014-11-07
KR101680953B1 (en) 2016-12-12
TR201808452T4 (en) 2018-07-23
CA2865651C (en) 2017-05-02
AU2013225076B2 (en) 2016-04-21
BR112014021054B1 (en) 2022-04-26
US20140372131A1 (en) 2014-12-18
EP2820647B1 (en) 2018-03-21
MX2014010098A (en) 2014-09-16
RU2612584C2 (en) 2017-03-09
CN104170009B (en) 2017-02-22
CA2865651A1 (en) 2013-09-06
AU2013225076A1 (en) 2014-09-04
ES2673319T3 (en) 2018-06-21
RU2014138820A (en) 2016-04-20
EP2631906A1 (en) 2013-08-28
EP2820647A1 (en) 2015-01-07
JP5873936B2 (en) 2016-03-01
BR112014021054A2 (en) 2021-05-25
WO2013127801A1 (en) 2013-09-06
US10818304B2 (en) 2020-10-27
MX338526B (en) 2016-04-20
CN104170009A (en) 2014-11-26

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