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AR085794A1 - Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral - Google Patents

Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral

Info

Publication number
AR085794A1
AR085794A1 ARP120100477A ARP120100477A AR085794A1 AR 085794 A1 AR085794 A1 AR 085794A1 AR P120100477 A ARP120100477 A AR P120100477A AR P120100477 A ARP120100477 A AR P120100477A AR 085794 A1 AR085794 A1 AR 085794A1
Authority
AR
Argentina
Prior art keywords
linear prediction
spectral domain
spectral
domain noise
coding scheme
Prior art date
Application number
ARP120100477A
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English (en)
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 AR085794A1 publication Critical patent/AR085794A1/es

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    • 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
    • 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
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    • 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
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    • 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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • G—PHYSICS
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    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
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    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
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    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
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    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
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    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un concepto de codificación que se basa en la predicción lineal, y que utiliza conformación de ruido de dominio espectral, se torna menos complejo, con una eficiencia de codificación comparable en términos de, por ejemplo, la relación de tasa/distorsión, usando la descomposición espectral de la señal de entrada de audio, en un espectrograma que comprende una secuencia de espectros, tanto para el cómputo de coeficientes de predicción lineal como para la conformación de dominio espectral, sobre la base de los coeficientes de predicción lineal. La eficiencia de codificación puede permanecer aun si se usa una transformada superpuesta tal para la descomposición espectral, que causa aliasing y necesita la cancelación del aliasing de tiempo, por ejemplo, transformadas superpuestas críticamente muestreadas tales como una MDCT.
ARP120100477A 2011-02-14 2012-02-14 Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral AR085794A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161442632P 2011-02-14 2011-02-14
PCT/EP2012/052455 WO2012110476A1 (en) 2011-02-14 2012-02-14 Linear prediction based coding scheme using spectral domain noise shaping

Publications (1)

Publication Number Publication Date
AR085794A1 true AR085794A1 (es) 2013-10-30

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ARP120100477A AR085794A1 (es) 2011-02-14 2012-02-14 Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral

Country Status (18)

Country Link
US (1) US9595262B2 (es)
EP (1) EP2676266B1 (es)
JP (1) JP5625126B2 (es)
KR (1) KR101617816B1 (es)
CN (1) CN103477387B (es)
AR (1) AR085794A1 (es)
AU (1) AU2012217156B2 (es)
BR (2) BR112013020587B1 (es)
CA (1) CA2827277C (es)
ES (1) ES2534972T3 (es)
MX (1) MX2013009346A (es)
MY (1) MY165853A (es)
PL (1) PL2676266T3 (es)
RU (1) RU2575993C2 (es)
SG (1) SG192748A1 (es)
TW (1) TWI488177B (es)
WO (1) WO2012110476A1 (es)
ZA (1) ZA201306840B (es)

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WO2011042464A1 (en) * 2009-10-08 2011-04-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Multi-mode audio signal decoder, multi-mode audio signal encoder, methods and computer program using a linear-prediction-coding based noise shaping
WO2012152764A1 (en) * 2011-05-09 2012-11-15 Dolby International Ab Method and encoder for processing a digital stereo audio signal
CN117392990A (zh) 2013-01-29 2024-01-12 弗劳恩霍夫应用研究促进协会 用于码激励线性预测类编码器的无边信息的噪声填充
FI3751566T3 (fi) 2014-04-17 2024-04-23 Voiceage Evs Llc Menetelmiä, kooderi ja dekooderi äänisignaalien lineaariseen ennakoivaan koodaukseen ja dekoodaukseen näytteistystaajuudeltaan erilaisten kehysten välillä siirryttäessä
KR101860139B1 (ko) * 2014-05-01 2018-05-23 니폰 덴신 덴와 가부시끼가이샤 주기성 통합 포락 계열 생성 장치, 주기성 통합 포락 계열 생성 방법, 주기성 통합 포락 계열 생성 프로그램, 기록매체
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EP3483882A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Controlling bandwidth in encoders and/or decoders
EP3483883A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio coding and decoding with selective postfiltering
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