MX2015018024A - Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante ocultamiento de errores. - Google Patents

Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante ocultamiento de errores.

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Publication number
MX2015018024A
MX2015018024A MX2015018024A MX2015018024A MX2015018024A MX 2015018024 A MX2015018024 A MX 2015018024A MX 2015018024 A MX2015018024 A MX 2015018024A MX 2015018024 A MX2015018024 A MX 2015018024A MX 2015018024 A MX2015018024 A MX 2015018024A
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MX
Mexico
Prior art keywords
audio signal
domain
receiving interface
frame
reconstruction
Prior art date
Application number
MX2015018024A
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English (en)
Other versions
MX351576B (es
Inventor
Ralph Sperschneider
Jérémie Lecomte
Christian Helmrich
Michael Schnabel
Goran Markovic
Original Assignee
Fraunhofer Ges Forschung
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Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2015018024A publication Critical patent/MX2015018024A/es
Publication of MX351576B publication Critical patent/MX351576B/es

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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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/012—Comfort noise or silence 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
    • G10L19/04—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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • 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
    • G10L19/02—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
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0002—Codebook adaptations
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0016—Codebook for LPC parameters

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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mathematical Physics (AREA)

Abstract

Se proporciona un aparato para decodificar una señal de audio. El aparato comprende una interfaz receptora (110), en donde la interfaz receptora (110) está configurada para recibir un primer cuadro que comprende una primera porción de la señal de audio de la señal de audio, y en donde la interfaz receptora (110) está configurada para recibir un segundo cuadro que comprende una segunda porción de la señal de audio de la señal de audio. Mas aun, el aparato comprende una unidad de rastreo del nivel de ruido (130), en donde la unidad de trazado del nivel de ruido (130) está configurada para determinar información del nivel de ruido que depende de por lo menos una de la primera porción de señal de audio y la segunda porción de señal de audio, en donde la información del nivel de ruido se presentada en el dominio de trazado. En forma adicional, el aparato comprende una primera unidad de reconstrucción (140) para reconstruir, en un primer dominio de reconstrucción, una tercera porción de la señal de audio de la señal de audio que depende de la información del nivel de ruido, si un tercer cuadro de la pluralidad de cuadros no se recibe a través de la interfaz receptora (110) o si dicho tercer cuadro se recibe a través de la interfaz receptora (110) pero está corrupto, en donde el primer dominio de reconstrucción es diferente de o igual al dominio de rastreo. Mas aun, el aparato comprende una unidad de transformación (121) para transformar la información del nivel de ruido del dominio de trazado a un segundo dominio de reconstrucción, si un cuarto cuadro de la pluralidad de cuadros no se recibe a través de la interfaz receptora (110) o si dicho cuarto cuadro se recibe a través de la interfaz receptora (110) pero está corrupto, en donde el segundo dominio de reconstrucción es diferente del dominio de trazado, y en donde el segundo dominio de reconstrucción es diferente del primer dominio de reconstrucción. Mas aun, el aparato comprende una segunda unidad de reconstrucción (141) para reconstruir, en el segundo dominio de reconstrucción, una cuarta porción de señal de audio de la señal de audio que depende de la información del nivel de ruido que sea representada en el segundo dominio de reconstrucción, si la dicho cuarto cuadro de la pluralidad de cuadros no se recibe a través de la interfaz receptora (110) o si dicho cuarto cuadro se recibe a través de la interfaz receptora (110) pero está corrupto.
MX2015018024A 2013-06-21 2014-06-23 Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante ocultamiento de errores. MX351576B (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13173154 2013-06-21
EP14166998 2014-05-05
PCT/EP2014/063177 WO2014202790A1 (en) 2013-06-21 2014-06-23 Apparatus and method for improved signal fade out in different domains during error concealment

Publications (2)

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MX2015018024A true MX2015018024A (es) 2016-06-24
MX351576B MX351576B (es) 2017-10-18

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Application Number Title Priority Date Filing Date
MX2015017261A MX355257B (es) 2013-06-21 2014-06-23 Aparato y método para lograr conceptos mejorados para tcx ltp.
MX2015016892A MX351577B (es) 2013-06-21 2014-06-23 Aparato y método para realizar un desvanecimiento de un espectro mdct a ruido blanco antes de aplicar fdns.
MX2015016638A MX347233B (es) 2013-06-21 2014-06-23 Aparato y método para desvanecimiento mejorado de señal para sistemas de codificación de audio conmutados durante el ocultamiento de errores.
MX2015017126A MX351363B (es) 2013-06-21 2014-06-23 Aparato y metodo para generar una forma espectral adaptativa de ruido de confort.
MX2015018024A MX351576B (es) 2013-06-21 2014-06-23 Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante ocultamiento de errores.

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Application Number Title Priority Date Filing Date
MX2015017261A MX355257B (es) 2013-06-21 2014-06-23 Aparato y método para lograr conceptos mejorados para tcx ltp.
MX2015016892A MX351577B (es) 2013-06-21 2014-06-23 Aparato y método para realizar un desvanecimiento de un espectro mdct a ruido blanco antes de aplicar fdns.
MX2015016638A MX347233B (es) 2013-06-21 2014-06-23 Aparato y método para desvanecimiento mejorado de señal para sistemas de codificación de audio conmutados durante el ocultamiento de errores.
MX2015017126A MX351363B (es) 2013-06-21 2014-06-23 Aparato y metodo para generar una forma espectral adaptativa de ruido de confort.

Country Status (18)

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US (15) US9997163B2 (es)
EP (5) EP3011557B1 (es)
JP (5) JP6360165B2 (es)
KR (5) KR101790902B1 (es)
CN (9) CN105378831B (es)
AU (5) AU2014283194B2 (es)
BR (5) BR112015031343B1 (es)
CA (5) CA2915014C (es)
ES (5) ES2635555T3 (es)
MX (5) MX355257B (es)
MY (5) MY181026A (es)
PL (5) PL3011559T3 (es)
PT (5) PT3011557T (es)
RU (5) RU2658128C2 (es)
SG (5) SG11201510353RA (es)
TW (5) TWI553631B (es)
WO (5) WO2014202788A1 (es)
ZA (1) ZA201600310B (es)

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