MX338526B - Control de coherencia de fase para señales armonicas en codecs de audio perceptual. - Google Patents

Control de coherencia de fase para señales armonicas en codecs de audio perceptual.

Info

Publication number
MX338526B
MX338526B MX2014010098A MX2014010098A MX338526B MX 338526 B MX338526 B MX 338526B MX 2014010098 A MX2014010098 A MX 2014010098A MX 2014010098 A MX2014010098 A MX 2014010098A MX 338526 B MX338526 B MX 338526B
Authority
MX
Mexico
Prior art keywords
audio signal
phase
phase coherence
harmonic signals
audio codecs
Prior art date
Application number
MX2014010098A
Other languages
English (en)
Other versions
MX2014010098A (es
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 MX2014010098A publication Critical patent/MX2014010098A/es
Publication of MX338526B publication Critical patent/MX338526B/es

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
    • 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
    • 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 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
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • 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 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
    • 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

Abstract

Se provee un descodificador para descodificar una señal de audio codificada para obtener una señal de audio fase-ajustada. El descodificador comprende una unidad de descodificación (110) y una unidad de ajuste de fase (120). La unidad de descodificación (110) es apta para descodificar la señal de audio descodificada para obtener una señal de audio descodificada. La unidad de ajuste de fase (120) es apta para ajustar la señal de audio descodificada para obtener la señal de audio fase-ajustada. La unidad de ajuste de fase (120) está configurada para recibir información de control dependiendo de la coherencia de fase vertical de la señal de audio codificada. Además, la unidad de ajuste de fase (120) es apta para ajustar la señal de audio descodificada en base a información de control.
MX2014010098A 2012-02-27 2013-02-26 Control de coherencia de fase para señales armonicas en codecs de audio perceptual. MX338526B (es)

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 (2)

Publication Number Publication Date
MX2014010098A MX2014010098A (es) 2014-09-16
MX338526B true MX338526B (es) 2016-04-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2014010098A MX338526B (es) 2012-02-27 2013-02-26 Control de coherencia de fase para señales armonicas en codecs de audio perceptual.

Country Status (14)

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

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Publication number Publication date
AU2013225076A1 (en) 2014-09-04
EP2820647B1 (en) 2018-03-21
EP2820647A1 (en) 2015-01-07
US10818304B2 (en) 2020-10-27
RU2014138820A (ru) 2016-04-20
RU2612584C2 (ru) 2017-03-09
CN104170009A (zh) 2014-11-26
CN104170009B (zh) 2017-02-22
ES2673319T3 (es) 2018-06-21
JP5873936B2 (ja) 2016-03-01
US20140372131A1 (en) 2014-12-18
CA2865651A1 (en) 2013-09-06
TR201808452T4 (tr) 2018-07-23
KR20140130225A (ko) 2014-11-07
KR101680953B1 (ko) 2016-12-12
CA2865651C (en) 2017-05-02
MX2014010098A (es) 2014-09-16
WO2013127801A1 (en) 2013-09-06
BR112014021054B1 (pt) 2022-04-26
BR112014021054A2 (pt) 2021-05-25
EP2631906A1 (en) 2013-08-28
JP2015508911A (ja) 2015-03-23
AU2013225076B2 (en) 2016-04-21
IN2014KN01766A (es) 2015-10-23

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