MX348506B - Aparato y metodo para codificar o decodificar una señal de audio utilizando una superposicion dependiente de la ubicacion de un transitorio. - Google Patents

Aparato y metodo para codificar o decodificar una señal de audio utilizando una superposicion dependiente de la ubicacion de un transitorio.

Info

Publication number
MX348506B
MX348506B MX2015010596A MX2015010596A MX348506B MX 348506 B MX348506 B MX 348506B MX 2015010596 A MX2015010596 A MX 2015010596A MX 2015010596 A MX2015010596 A MX 2015010596A MX 348506 B MX348506 B MX 348506B
Authority
MX
Mexico
Prior art keywords
transient
overlap length
location
window
overlap
Prior art date
Application number
MX2015010596A
Other languages
English (en)
Other versions
MX2015010596A (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 MX2015010596A publication Critical patent/MX2015010596A/es
Publication of MX348506B publication Critical patent/MX348506B/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 codificar una imagen de audio o de imagen, comprende: un formador de ventanas controlable (102) para poner en ventana la imagen de audio o de imagen a efectos de proveer una secuencia de bloques de muestras puestas en ventana, un convertidor (104) para convertir la secuencia de bloques de muestras puestas en ventana en una representación espectral que comprende una secuencia de cuadros de valores espectrales; un detector de la ubicación de transitorios (106) para identificar la ubicación de un transitorio dentro de una región de anticipación de transitorios de un cuadro; y un controlador (108) para controlar el formador de ventanas controlable (102) a efectos de aplicar una ventana específica que tiene una longitud de solape especificada a la imagen de audio o de imagen en respuesta a una ubicación identificada (210-213) del transitorio, en donde el controlador (108) está configurado para seleccionar la ventana específica de entre un grupo de por lo menos tres ventanas que comprende una primera ventana (201) que tiene una primera longitud de solape (203), una segunda ventana (215) que tiene una segunda longitud de solape (218), y una tercera ventana (224) que tiene una tercera longitud de solape (229) o que tiene solape; en donde la primera longitud de solape (203) es mayor que la segunda longitud de solape (218), y en donde la segunda longitud de solape (218) es mayor que la tercera longitud de solape (229) o es mayor que un solape igual a cero; en donde la ventana específica se selecciona sobre la base de la ubicación del transitorio de manera tal que una de dos ventanas solapantes adyacentes en el tiempo tiene primeros coeficientes de ventana en la ubicación del transitorio y la otra de las dos ventanas solapantes adyacentes en el tiempo tiene segundos coeficientes de ventana en la ubicación del transitorio, en donde los segundos coeficientes son por lo menos nueve veces mayores que los primeros coeficientes.
MX2015010596A 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. MX348506B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361767115P 2013-02-20 2013-02-20
PCT/EP2014/053293 WO2014128197A1 (en) 2013-02-20 2014-02-20 Apparatus and method for encoding or decoding an audio signal using a transient-location dependent overlap

Publications (2)

Publication Number Publication Date
MX2015010596A MX2015010596A (es) 2015-12-16
MX348506B true MX348506B (es) 2017-06-14

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
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.
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.

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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.

Country Status (20)

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US (7) US10354662B2 (es)
EP (4) EP2959481B1 (es)
JP (2) JP6196324B2 (es)
KR (2) KR101764726B1 (es)
CN (5) CN105378835B (es)
AR (2) AR094845A1 (es)
AU (2) AU2014220725B2 (es)
BR (2) BR112015019270B1 (es)
CA (2) CA2900437C (es)
ES (2) ES2634621T3 (es)
HK (2) HK1218988A1 (es)
MX (2) MX348505B (es)
MY (2) MY185210A (es)
PL (2) PL2959481T3 (es)
PT (2) PT2959481T (es)
RU (2) RU2626666C2 (es)
SG (2) SG11201506543WA (es)
TR (1) TR201910956T4 (es)
TW (2) TWI550600B (es)
WO (2) WO2014128194A1 (es)

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