BR112013020699A2 - aparelho e método para codificar e decodificar um sinal de áudio utilizando uma parte antecipada alinhada - Google Patents

aparelho e método para codificar e decodificar um sinal de áudio utilizando uma parte antecipada alinhada

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Publication number
BR112013020699A2
BR112013020699A2 BR112013020699A BR112013020699A BR112013020699A2 BR 112013020699 A2 BR112013020699 A2 BR 112013020699A2 BR 112013020699 A BR112013020699 A BR 112013020699A BR 112013020699 A BR112013020699 A BR 112013020699A BR 112013020699 A2 BR112013020699 A2 BR 112013020699A2
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BR
Brazil
Prior art keywords
decoding
encoding
early
audio signal
aligned portion
Prior art date
Application number
BR112013020699A
Other languages
English (en)
Other versions
BR112013020699B1 (pt
Inventor
Bäckström Tom
Fuchs Guillaume
Geiger Ralf
Grill Bernhard
Helmrich Christian
Ravelli Emmanuel
Ruoppila Vesa
Schnell Markus
Original Assignee
Fraunhofer Gellschaft Zur Förderung Der Angewandten Forschung E V
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Application filed by Fraunhofer Gellschaft Zur Förderung Der Angewandten Forschung E V filed Critical Fraunhofer Gellschaft Zur Förderung Der Angewandten Forschung E V
Publication of BR112013020699A2 publication Critical patent/BR112013020699A2/pt
Publication of BR112013020699B1 publication Critical patent/BR112013020699B1/pt

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    • 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
    • G10L19/08—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
    • 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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source
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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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
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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
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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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    • G—PHYSICS
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    • G—PHYSICS
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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
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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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    • 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
    • G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook
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    • 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
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    • 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
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    • G10L19/16—Vocoder architecture
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    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
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    • G10L21/00—Processing of the speech or voice signal 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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    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
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    • G—PHYSICS
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    • G10L25/78—Detection of presence or absence of voice signals
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    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
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    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G—PHYSICS
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    • 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
BR112013020699-3A 2011-02-14 2012-02-14 Aparelho e método para codificar e decodificar um sinal de áudio utilizando uma parte antecipada alinhada BR112013020699B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161442632P 2011-02-14 2011-02-14
US61/442,632 2011-02-14
PCT/EP2012/052450 WO2012110473A1 (en) 2011-02-14 2012-02-14 Apparatus and method for encoding and decoding an audio signal using an aligned look-ahead portion

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BR112013020699A2 true BR112013020699A2 (pt) 2016-10-25
BR112013020699B1 BR112013020699B1 (pt) 2021-08-17

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US (1) US9047859B2 (pt)
EP (3) EP2676265B1 (pt)
JP (1) JP6110314B2 (pt)
KR (2) KR101853352B1 (pt)
CN (2) CN105304090B (pt)
AR (3) AR085221A1 (pt)
AU (1) AU2012217153B2 (pt)
BR (1) BR112013020699B1 (pt)
CA (1) CA2827272C (pt)
ES (1) ES2725305T3 (pt)
MX (1) MX2013009306A (pt)
MY (1) MY160265A (pt)
PL (1) PL2676265T3 (pt)
PT (1) PT2676265T (pt)
SG (1) SG192721A1 (pt)
TR (1) TR201908598T4 (pt)
TW (2) TWI563498B (pt)
WO (1) WO2012110473A1 (pt)
ZA (1) ZA201306839B (pt)

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