AR072740A1 - Proveedor de la senal de activacion de distorsion de tiempo codificador de senal de audio, metodo para proveer una senal de activacion de distorsion de tiempo metodo para codificar una senal de audio y programas de computacion - Google Patents

Proveedor de la senal de activacion de distorsion de tiempo codificador de senal de audio, metodo para proveer una senal de activacion de distorsion de tiempo metodo para codificar una senal de audio y programas de computacion

Info

Publication number
AR072740A1
AR072740A1 ARP090102631A ARP090102631A AR072740A1 AR 072740 A1 AR072740 A1 AR 072740A1 AR P090102631 A ARP090102631 A AR P090102631A AR P090102631 A ARP090102631 A AR P090102631A AR 072740 A1 AR072740 A1 AR 072740A1
Authority
AR
Argentina
Prior art keywords
time
distorsion
coding
audio signal
signal
Prior art date
Application number
ARP090102631A
Other languages
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 AR072740A1 publication Critical patent/AR072740A1/es

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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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • 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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • 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
    • G10L21/04—Time compression or expansion
    • G10L21/043—Time compression or expansion by changing speed
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90—Pitch determination of speech signals
    • 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
    • G10L19/022—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
    • 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
    • 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
    • G10L21/04—Time compression or expansion
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals

Abstract

Un codificador de audio comprende un controlador de la funcion de generacion de ventanas (504) un windower (502), un distorsionador de tiempo (506) con una funcionalidad de control de calidad final, un convertidor de tiempo/frecuencia (508), una etapa de TNS (510) o un codificador cuantificador (512), el controlador de la funcion de generacion de ventanas (504), el distorsionador de tiempo (506). La etapa de TNS (510) o un analizador de relleno de ruido adicional (524) se controlan mediante resultados de análisis de senal obtenidos por un analizador de distorsion de tiempo (516) o un clasificador de senal (520). Más aun, un decodificador aplica una operacion de relleno de ruido utilizando un estimado de relleno de ruido manipulado que depende de una característica armonica o de expresion de la senal de audio.
ARP090102631A 2008-07-11 2009-07-13 Proveedor de la senal de activacion de distorsion de tiempo codificador de senal de audio, metodo para proveer una senal de activacion de distorsion de tiempo metodo para codificar una senal de audio y programas de computacion AR072740A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7987308P 2008-07-11 2008-07-11
PCT/EP2009/004874 WO2010003618A2 (en) 2008-07-11 2009-07-06 Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs

Publications (1)

Publication Number Publication Date
AR072740A1 true AR072740A1 (es) 2010-09-15

Family

ID=41037694

Family Applications (8)

Application Number Title Priority Date Filing Date
ARP090102631A AR072740A1 (es) 2008-07-11 2009-07-13 Proveedor de la senal de activacion de distorsion de tiempo codificador de senal de audio, metodo para proveer una senal de activacion de distorsion de tiempo metodo para codificar una senal de audio y programas de computacion
ARP140103757A AR097969A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103758A AR097970A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103753A AR097965A2 (es) 2008-07-11 2014-10-08 Proveedor de señal de activación de distorsión de tiempo, codificador de audio y método para codificar una señal de audio y método para aportar una señal de activación de distorsión de tiempo
ARP140103756A AR097968A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103755A AR097967A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103754A AR097966A2 (es) 2008-07-11 2014-10-08 Proveedor de señal de activación de distorsión de tiempo, codificador de audio y método para codificar una señal de audio y método para aportar una señal de activación de distorsión de tiempo
ARP190102320A AR116330A2 (es) 2008-07-11 2019-08-14 Codificador de audio y método para codificar una señal de audio

Family Applications After (7)

Application Number Title Priority Date Filing Date
ARP140103757A AR097969A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103758A AR097970A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103753A AR097965A2 (es) 2008-07-11 2014-10-08 Proveedor de señal de activación de distorsión de tiempo, codificador de audio y método para codificar una señal de audio y método para aportar una señal de activación de distorsión de tiempo
ARP140103756A AR097968A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103755A AR097967A2 (es) 2008-07-11 2014-10-08 Codificador de audio y método para codificar una señal de audio
ARP140103754A AR097966A2 (es) 2008-07-11 2014-10-08 Proveedor de señal de activación de distorsión de tiempo, codificador de audio y método para codificar una señal de audio y método para aportar una señal de activación de distorsión de tiempo
ARP190102320A AR116330A2 (es) 2008-07-11 2019-08-14 Codificador de audio y método para codificar una señal de audio

Country Status (18)

Country Link
US (7) US9015041B2 (es)
EP (5) EP2410522B1 (es)
JP (5) JP5538382B2 (es)
KR (5) KR101400484B1 (es)
CN (5) CN103077722B (es)
AR (8) AR072740A1 (es)
AT (1) ATE539433T1 (es)
AU (1) AU2009267433B2 (es)
BR (1) BRPI0910790A2 (es)
CA (5) CA2730239C (es)
ES (5) ES2654432T3 (es)
HK (5) HK1155551A1 (es)
MX (1) MX2011000368A (es)
PL (4) PL2311033T3 (es)
PT (3) PT2410520T (es)
RU (5) RU2536679C2 (es)
TW (1) TWI463484B (es)
WO (1) WO2010003618A2 (es)

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