MX348505B - Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada usando una porción multi superpuesta. - Google Patents

Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada usando una porción multi superpuesta.

Info

Publication number
MX348505B
MX348505B MX2015010595A MX2015010595A MX348505B MX 348505 B MX348505 B MX 348505B MX 2015010595 A MX2015010595 A MX 2015010595A MX 2015010595 A MX2015010595 A MX 2015010595A MX 348505 B MX348505 B MX 348505B
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MX
Mexico
Prior art keywords
block
window
frame
samples
generating
Prior art date
Application number
MX2015010595A
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English (en)
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MX2015010595A (es
Inventor
Markus Schnell
Bernd Edler
Jérémie Lecomte
Christian Helmrich
Goran Markovic
Stefan Reuschl
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.)
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Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2015010595A publication Critical patent/MX2015010595A/es
Publication of MX348505B publication Critical patent/MX348505B/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

Se provee un codec de audio en el dominio de las frecuencias con la capacidad de soportar adicionalmente una determinada longitud de transformada de una manera inversamente compatible, gracias a lo siguiente: los coeficientes del dominio de las frecuencias de un marco respectivo son transmitidos de una manera entrelazada independientemente de la señalización que señala los marcos en cuanto a cuál longitud de transformada rige realmente, y adicionalmente la extracción de los coeficientes del dominio de las frecuencias y la extracción de factores de escala operan independientemente de la señalización. Gracias a esta medida, los codificadores/decodificador de audio en el dominio de las frecuencias, anticuados, no sensibles a la señalización, serian sin embargo capaces de operar sin defectos y reproduciendo una calidad razonable. Al mismo tiempo, los codificadores/decodificado res de audio en el dominio de la frecuencias capaces de soportar la longitud de transformada adicional ofrecerían una calidad aun superior a pesar de la compatibilidad inversa. En lo que se refiere a las penalizaciones en la eficiencia de la codificación debidas a la codificación de los coeficientes del dominio de las frecuencias de una manera transparente para decodificadores más antiguos, las mismas son de una naturaleza comparativamente menor debido al entrelazado.
MX2015010595A 2013-02-20 2014-02-20 Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada usando una porción multi superpuesta. MX348505B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361767115P 2013-02-20 2013-02-20
PCT/EP2014/053287 WO2014128194A1 (en) 2013-02-20 2014-02-20 Apparatus and method for generating an encoded signal or for decoding an encoded audio signal using a multi overlap portion

Publications (2)

Publication Number Publication Date
MX2015010595A MX2015010595A (es) 2015-12-16
MX348505B true MX348505B (es) 2017-06-14

Family

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Family Applications (2)

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MX2015010596A MX348506B (es) 2013-02-20 2014-02-20 Aparato y metodo para codificar o decodificar una señal de audio utilizando una superposicion dependiente de la ubicacion de un transitorio.
MX2015010595A MX348505B (es) 2013-02-20 2014-02-20 Aparato y método para generar una señal codificada o para decodificar una señal de audio codificada usando una porción multi superpuesta.

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MX2015010596A MX348506B (es) 2013-02-20 2014-02-20 Aparato y metodo para codificar o decodificar una señal de audio utilizando una superposicion dependiente de la ubicacion de un transitorio.

Country Status (20)

Country Link
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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