MX347233B - Aparato y método para desvanecimiento mejorado de señal para sistemas de codificación de audio conmutados durante el ocultamiento de errores. - Google Patents

Aparato y método para desvanecimiento mejorado de señal para sistemas de codificación de audio conmutados durante el ocultamiento de errores.

Info

Publication number
MX347233B
MX347233B MX2015016638A MX2015016638A MX347233B MX 347233 B MX347233 B MX 347233B MX 2015016638 A MX2015016638 A MX 2015016638A MX 2015016638 A MX2015016638 A MX 2015016638A MX 347233 B MX347233 B MX 347233B
Authority
MX
Mexico
Prior art keywords
audio signal
domain
receiving interface
frame
reconstruction
Prior art date
Application number
MX2015016638A
Other languages
English (en)
Inventor
Ralph Sperschneider
Jérémie Lecomte
Christian Helmrich
Michael Schnabel
Goran Markovic
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 MX347233B publication Critical patent/MX347233B/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)
  • Mathematical Physics (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

Se presenta un aparato para decodificar una señal de audio. El aparato comprende una interfaz de recepción (110), donde la interfaz de recepción (110) está configurada para recibir una primera trama que comprende una primera porción de la señal de audio de la señal de audio, y donde la interfaz de recepción (110) está configurada para recibir una segunda trama que comprende una segunda porción de la señal de audio de la señal de audio. Más aun, el aparato comprende una unidad de rastreo de nivel de ruido (130), donde la unidad de rastreo de nivel de ruido (130) está configurada para determinar la información de nivel de ruido dependiendo de por lo menos una de la primera porción de la señal de audio y la segunda porción de la señal de audio, donde la información de nivel de ruido está representada en un dominio de rastreo. Por añadidura, 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 dependiendo de la información de nivel de ruido, si una tercera trama de la pluralidad de tramas no es recibida por la interfaz de recepción (110) o si dicha tercera trama es recibida por la interfaz de recepción (110) pero está corrupta, donde el primer dominio de reconstrucción es diferente o igual al dominio de rastreo. Más aun, el aparato comprende una unidad de transformación (121) para transformar la información de nivel de ruido del dominio de rastreo a un segundo dominio de reconstrucción, si una cuarta trama de la pluralidad de tramas no es recibida por la interfaz de recepción (110) o si dicha cuarta trama es recibida por la interfaz de recepción (110) pero está corrupta, donde el segundo dominio de reconstrucción es diferente del dominio de rastreo, y donde el segundo dominio de reconstrucción es diferente del primer dominio de reconstrucción. Por añadidura, el aparato comprende una segunda unidad de reconstrucción (141) para reconstruir, en el segundo dominio de reconstrucción, una cuarta porción de la señal de audio de la señal de audio dependiendo de la información de nivel de ruido que está representada en el segundo dominio de reconstrucción, si dicha cuarta trama de la pluralidad de tramas no es recibida por la interfaz de recepción (110) o si dicha cuarta trama es recibida por la interfaz de recepción (110) pero está corrupta.
MX2015016638A 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. MX347233B (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13173154 2013-06-21
EP14166998 2014-05-05
PCT/EP2014/063171 WO2014202784A1 (en) 2013-06-21 2014-06-23 Apparatus and method for improved signal fade out for switched audio coding systems during error concealment

Publications (1)

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MX347233B true MX347233B (es) 2017-04-19

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Application Number Title Priority Date Filing Date
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.
MX2015018024A MX351576B (es) 2013-06-21 2014-06-23 Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante 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.
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.
MX2015017261A MX355257B (es) 2013-06-21 2014-06-23 Aparato y método para lograr conceptos mejorados para tcx ltp.

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MX2015018024A MX351576B (es) 2013-06-21 2014-06-23 Aparato y método para desvanecimiento de señal mejorado en diferentes dominios durante 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.
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.
MX2015017261A MX355257B (es) 2013-06-21 2014-06-23 Aparato y método para lograr conceptos mejorados para tcx ltp.

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US (15) US9916833B2 (es)
EP (5) EP3011561B1 (es)
JP (5) JP6196375B2 (es)
KR (5) KR101787296B1 (es)
CN (9) CN110265044B (es)
AU (5) AU2014283198B2 (es)
BR (5) BR112015031177B1 (es)
CA (5) CA2915014C (es)
ES (5) ES2635555T3 (es)
MX (5) MX347233B (es)
MY (5) MY181026A (es)
PL (5) PL3011561T3 (es)
PT (5) PT3011561T (es)
RU (5) RU2658128C2 (es)
SG (5) SG11201510510PA (es)
TW (5) TWI553631B (es)
WO (5) WO2014202784A1 (es)
ZA (1) ZA201600310B (es)

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