AR096576A1 - Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada utilizando una porción de superposiciones múltiples - Google Patents

Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada utilizando una porción de superposiciones múltiples

Info

Publication number
AR096576A1
AR096576A1 ARP140100545A ARP140100545A AR096576A1 AR 096576 A1 AR096576 A1 AR 096576A1 AR P140100545 A ARP140100545 A AR P140100545A AR P140100545 A ARP140100545 A AR P140100545A AR 096576 A1 AR096576 A1 AR 096576A1
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AR
Argentina
Prior art keywords
window
block
samples
frame
overlap
Prior art date
Application number
ARP140100545A
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English (en)
Original Assignee
Fraunhofer Ges Forschung
Friedrich-Alexander-Universitaet Erlangen-Nuernberg
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
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Application filed by Fraunhofer Ges Forschung, Friedrich-Alexander-Universitaet Erlangen-Nuernberg filed Critical Fraunhofer Ges Forschung
Publication of AR096576A1 publication Critical patent/AR096576A1/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
    • G10L19/02—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 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
    • 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
    • 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
    • H03M7/3002—Conversion to or from differential modulation
    • H03M7/3044—Conversion to or from differential modulation with several bits only, i.e. the difference between successive samples being coded by more than one bit, e.g. differential pulse code modulation [DPCM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Un aparato para generar una señal de audio codificada comprende: un controlador de secuencias de ventanas (808) para generar una información de secuencias de ventanas (809) para el proceso de ventana de una señal de audio o de una señal de imagen, indicando la información de secuencias de ventanas una primera ventana (1500) para generar un primer cuadro de valores espectrales, una segunda función de ventana (1502) y por lo menos una tercera función de ventana (1503) para generar un segundo cuadro de valores espectrales, en donde la primera función de ventana (1500), la segunda función de ventana (1502) y la una o más terceras funciones de ventana se superponen dentro de una región de superposiciones múltiples (1300); un pre procesador (802) para el proceso de ventana (902) de un segundo bloque de muestras que se corresponde a la segunda función de ventana y a la una o más terceras funciones de ventana para lo cual se utiliza una función auxiliar de ventana (1100) para obtener un segundo bloque de muestras en ventana, y para preprocesar (904) el segundo bloque de muestras en ventana para lo cual se utiliza una operación de plegado hacia dentro de una porción del segundo bloque que se solapa a un primer bloque en la porción de solape múltiple (1300) para obtener un segundo bloque preprocesado de muestras en ventana que tiene una porción de solape múltiple modificada; un convertidor de espectros (804) para aplicar una transformada introductora de solapamiento (906) al primer bloque de muestras para lo cual se utiliza la primera función de ventana para obtener el primer cuadro de valores espectrales, para aplicar la transformada introductora de solapamiento a una primera porción del segundo bloque, preprocesado, de muestras en ventana para lo cual se utiliza la segunda función de ventana para obtener una primera porción de muestras espectrales del segundo cuadro y para aplicar la transformada introductora de solapamiento a una segunda porción del segundo bloque, preprocesado, de muestras en ventana para lo cual se utiliza la una o más terceras funciones de ventana (1503) para obtener una segunda porción de muestras espectrales del segundo cuadro; y un procesador (806) para procesar el primer cuadro y el segundo cuadro para obtener cuadros codificados de señal de audio o de imagen.
ARP140100545A 2013-02-20 2014-02-20 Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada utilizando una porción de superposiciones múltiples AR096576A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201361767115P 2013-02-20 2013-02-20

Publications (1)

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AR096576A1 true AR096576A1 (es) 2016-01-20

Family

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ARP140100545A AR096576A1 (es) 2013-02-20 2014-02-20 Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada utilizando una porción de superposiciones múltiples
ARP140100544A AR094845A1 (es) 2013-02-20 2014-02-20 Aparato y método para codificar o decodificar una señal de audio utilizando una superposición dependiente de la ubicación de un transitorio

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ARP140100544A AR094845A1 (es) 2013-02-20 2014-02-20 Aparato y método para codificar o decodificar una señal de audio utilizando una superposición dependiente de la ubicación de un transitorio

Country Status (20)

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US (7) US9947329B2 (es)
EP (4) EP4375996A3 (es)
JP (2) JP6175148B2 (es)
KR (2) KR101764725B1 (es)
CN (5) CN110232929B (es)
AR (2) AR096576A1 (es)
AU (2) AU2014220722B2 (es)
BR (2) BR112015019543B1 (es)
CA (2) CA2901186C (es)
ES (2) ES2736309T3 (es)
HK (2) HK1218988A1 (es)
MX (2) MX348506B (es)
MY (2) MY185210A (es)
PL (2) PL2959481T3 (es)
PT (2) PT2959482T (es)
RU (2) RU2625560C2 (es)
SG (2) SG11201506542QA (es)
TR (1) TR201910956T4 (es)
TW (2) TWI550600B (es)
WO (2) WO2014128197A1 (es)

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