MXPA05012230A - Codificacion de longitud de cuadro variable optimizada en fidelidad. - Google Patents

Codificacion de longitud de cuadro variable optimizada en fidelidad.

Info

Publication number
MXPA05012230A
MXPA05012230A MXPA05012230A MXPA05012230A MXPA05012230A MX PA05012230 A MXPA05012230 A MX PA05012230A MX PA05012230 A MXPA05012230 A MX PA05012230A MX PA05012230 A MXPA05012230 A MX PA05012230A MX PA05012230 A MXPA05012230 A MX PA05012230A
Authority
MX
Mexico
Prior art keywords
signal
encoding
xside
fidelity
frame length
Prior art date
Application number
MXPA05012230A
Other languages
English (en)
Inventor
Daniel Enstroem
Original Assignee
Ericsson Telefon Ab L M
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
Priority claimed from SE0303501A external-priority patent/SE0303501D0/xx
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of MXPA05012230A publication Critical patent/MXPA05012230A/es

Links

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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/04—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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Endoscopes (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Se utilizan senales polifonicas para crear una senal principal, tipicamente una senal mono, y una senal lateral (Xlateral). Un numero de esquemas (81) de codificacion para la senal lateral (Xlateral) se proporciona. Cada esquema (81) de codificacion esta caracterizado por un juego de cuadros secundarios )90= de diferentes longitudes. La longitud total de los cuadros secundarios (90) corresponde a la longitud del cuadro (80) de codificacion del esquema (81) de codificacion. El esquema (81) de codificacion que se va a usar en la senal lateral (Xlateral) se selecciona dependiendo del contenido de senal presente de las senales polifonicas. En una modalidad preferida, una senal residual lateral se crea como la diferencia entre la senal lateral y la senal principal llevadas a escala con un factor de equilibrio. El factor de equilibrio se selecciona para reducir al minimo la senal residual lateral. La senal residual lateral optimizada y el factor de equilibrio se codifican y proporcionan como parametros de codificacion que representan la senal lateral.
MXPA05012230A 2003-12-19 2004-12-15 Codificacion de longitud de cuadro variable optimizada en fidelidad. MXPA05012230A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0303501A SE0303501D0 (sv) 2003-12-19 2003-12-19 Filter-based parametric multi-channel coding
SE0400417A SE527670C2 (sv) 2003-12-19 2004-02-20 Naturtrogenhetsoptimerad kodning med variabel ramlängd
PCT/SE2004/001867 WO2005059899A1 (en) 2003-12-19 2004-12-15 Fidelity-optimised variable frame length encoding

Publications (1)

Publication Number Publication Date
MXPA05012230A true MXPA05012230A (es) 2006-02-10

Family

ID=31996354

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05012230A MXPA05012230A (es) 2003-12-19 2004-12-15 Codificacion de longitud de cuadro variable optimizada en fidelidad.

Country Status (15)

Country Link
EP (2) EP1623411B1 (es)
JP (2) JP4335917B2 (es)
CN (2) CN100559465C (es)
AT (2) ATE371924T1 (es)
AU (1) AU2004298708B2 (es)
BR (2) BRPI0410856B8 (es)
CA (2) CA2690885C (es)
DE (2) DE602004008613T2 (es)
HK (2) HK1091585A1 (es)
MX (1) MXPA05012230A (es)
PL (1) PL1623411T3 (es)
RU (2) RU2305870C2 (es)
SE (1) SE527670C2 (es)
WO (1) WO2005059899A1 (es)
ZA (1) ZA200508980B (es)

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Also Published As

Publication number Publication date
DE602004008613D1 (de) 2007-10-11
CA2527971A1 (en) 2005-06-30
EP1845519A2 (en) 2007-10-17
AU2004298708A1 (en) 2005-06-30
EP1845519A3 (en) 2007-11-07
RU2007121143A (ru) 2008-12-10
ZA200508980B (en) 2007-03-28
ATE371924T1 (de) 2007-09-15
EP1623411B1 (en) 2007-08-29
EP1623411A1 (en) 2006-02-08
CN100559465C (zh) 2009-11-11
SE0400417D0 (sv) 2004-02-20
DE602004023240D1 (de) 2009-10-29
WO2005059899A1 (en) 2005-06-30
CN101118747A (zh) 2008-02-06
BRPI0410856B1 (pt) 2019-10-01
CA2690885C (en) 2014-01-21
CA2690885A1 (en) 2005-06-30
JP2008026914A (ja) 2008-02-07
ATE443317T1 (de) 2009-10-15
CN101118747B (zh) 2011-02-23
JP2007529021A (ja) 2007-10-18
DE602004008613T2 (de) 2008-06-12
HK1115665A1 (en) 2008-12-05
RU2005134365A (ru) 2006-05-27
SE527670C2 (sv) 2006-05-09
JP4589366B2 (ja) 2010-12-01
CA2527971C (en) 2011-03-15
BRPI0419281B1 (pt) 2018-08-14
JP4335917B2 (ja) 2009-09-30
CN1816847A (zh) 2006-08-09
RU2305870C2 (ru) 2007-09-10
SE0400417L (sv) 2005-06-20
BRPI0410856A (pt) 2006-07-04
AU2004298708B2 (en) 2008-01-03
EP1845519B1 (en) 2009-09-16
RU2425340C2 (ru) 2011-07-27
PL1623411T3 (pl) 2008-01-31
HK1091585A1 (en) 2007-01-19
BRPI0410856B8 (pt) 2019-10-15

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