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MX2009004046A - Banco de filtros de analisis, banco de filtros de sintesis codificador, descodificador, mezclador y sistema de conferencia. - Google Patents

Banco de filtros de analisis, banco de filtros de sintesis codificador, descodificador, mezclador y sistema de conferencia.

Info

Publication number
MX2009004046A
MX2009004046A MX2009004046A MX2009004046A MX2009004046A MX 2009004046 A MX2009004046 A MX 2009004046A MX 2009004046 A MX2009004046 A MX 2009004046A MX 2009004046 A MX2009004046 A MX 2009004046A MX 2009004046 A MX2009004046 A MX 2009004046A
Authority
MX
Mexico
Prior art keywords
input
filterbank
frame
windowed
decoder
Prior art date
Application number
MX2009004046A
Other languages
English (en)
Inventor
Ralf Geiger
Bernhard Grill
Markus Schnell
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 MX2009004046A publication Critical patent/MX2009004046A/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
    • G10L19/02—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 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
    • G10L19/04—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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • G10L19/135—Vector sum excited linear prediction [VSELP]

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Facsimile Transmission Control (AREA)
  • Telephonic Communication Services (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Complex Calculations (AREA)
  • Image Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Noise Elimination (AREA)

Abstract

Se describe una modalidad de un banco de filtros de análisis para filtrar una pluralidad de cuadros de entrada de dominio de tiempo, en donde el cuadro de entrada comprende un número de muestras de entrada ordenadas, que comprende un formador de ventana configurado para generar una pluralidad de cuadros de ventana, en donde un cuadro de ventana comprende una pluralidad de muestras de ventana, en donde el formador de ventanas está configurado para procesar la pluralidad de cuadros de entrada de manera traslapante usando un valor por adelantado de la muestra, en donde el valor por adelantado de la muestra es menor que el número de muestras de entrada ordenadas de un cuadro de entrada dividido por dos y un convertidor de tiempo/frecuencia configurado para proporcionar un cuadro de salida que comprende un número de valores de salida, en donde el cuadro de salida es una representación espectral de un cuadro de ventana.
MX2009004046A 2006-10-18 2007-08-29 Banco de filtros de analisis, banco de filtros de sintesis codificador, descodificador, mezclador y sistema de conferencia. MX2009004046A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US86203206P 2006-10-18 2006-10-18
US11/744,641 US8036903B2 (en) 2006-10-18 2007-05-04 Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system
PCT/EP2007/007553 WO2008046468A2 (en) 2006-10-18 2007-08-29 Analysis filterbank, synthesis filterbank, encoder, decoder, mixer and conferencing system

Publications (1)

Publication Number Publication Date
MX2009004046A true MX2009004046A (es) 2009-04-27

Family

ID=38904615

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2009004046A MX2009004046A (es) 2006-10-18 2007-08-29 Banco de filtros de analisis, banco de filtros de sintesis codificador, descodificador, mezclador y sistema de conferencia.

Country Status (21)

Country Link
US (6) US8036903B2 (es)
EP (5) EP2113910B1 (es)
JP (5) JP5546863B2 (es)
KR (3) KR101162462B1 (es)
CN (4) CN102243875B (es)
AT (3) ATE554480T1 (es)
AU (3) AU2007312696B2 (es)
BR (2) BRPI0716004B1 (es)
CA (3) CA2782609C (es)
ES (5) ES2592253T3 (es)
IL (4) IL197757A (es)
MX (1) MX2009004046A (es)
MY (4) MY164995A (es)
NO (5) NO342445B1 (es)
PL (5) PL2378516T3 (es)
PT (1) PT2884490T (es)
RU (1) RU2426178C2 (es)
SG (2) SG174836A1 (es)
TW (1) TWI355647B (es)
WO (1) WO2008046468A2 (es)
ZA (1) ZA200901650B (es)

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US8036903B2 (en) 2011-10-11
JP2013210656A (ja) 2013-10-10
NO20091900L (no) 2009-05-14
USRE45276E1 (en) 2014-12-02
AU2011201331A1 (en) 2011-04-14
USRE45277E1 (en) 2014-12-02
CN102243873A (zh) 2011-11-16
EP2074615B1 (en) 2012-04-18
PL2074615T3 (pl) 2012-10-31
ES2592253T3 (es) 2016-11-29
ES2374014T3 (es) 2012-02-13
ES2386206T3 (es) 2012-08-13
JP2012150507A (ja) 2012-08-09
HK1138674A1 (en) 2010-08-27
RU2426178C2 (ru) 2011-08-10
TW200832357A (en) 2008-08-01
USRE45526E1 (en) 2015-05-19
CN102243874A (zh) 2011-11-16
USRE45339E1 (en) 2015-01-13
PL2113910T3 (pl) 2012-02-29
KR101209410B1 (ko) 2012-12-10
NO20170985A1 (no) 2009-05-14
NO342476B1 (no) 2018-05-28
IL197757A (en) 2014-09-30
JP2014059570A (ja) 2014-04-03
WO2008046468A3 (en) 2008-06-26
IL226225A0 (en) 2013-06-27
AU2011201330B2 (en) 2011-08-25
KR20110049885A (ko) 2011-05-12
AU2011201330A1 (en) 2011-04-14
AU2011201331B2 (en) 2012-02-09
CA2782609C (en) 2016-10-04
SG174836A1 (en) 2011-10-28
CN102243874B (zh) 2013-04-24
JP5859504B2 (ja) 2016-02-10
EP2113911A3 (en) 2009-11-18
IL226223A (en) 2016-02-29
MY155486A (en) 2015-10-30
CA2782476A1 (en) 2008-04-24
NO342445B1 (no) 2018-05-22
USRE45294E1 (en) 2014-12-16
EP2113910A1 (en) 2009-11-04
WO2008046468A2 (en) 2008-04-24
PL2378516T3 (pl) 2015-06-30
US20080097764A1 (en) 2008-04-24
JP5700713B2 (ja) 2015-04-15
CA2782609A1 (en) 2008-04-24
CN102243873B (zh) 2013-04-24
NO20170986A1 (no) 2009-05-14
IL226223A0 (en) 2013-06-27
NO342516B1 (no) 2018-06-04
AU2007312696A1 (en) 2008-04-24
IL226224A0 (en) 2013-06-27
ATE554480T1 (de) 2012-05-15
SG174835A1 (en) 2011-10-28
AU2007312696A8 (en) 2009-05-14
IL226225A (en) 2016-02-29
BR122019020171B1 (pt) 2021-05-25
EP2113911A2 (en) 2009-11-04
NO342514B1 (no) 2018-06-04
CA2667059A1 (en) 2008-04-24
IL197757A0 (en) 2009-12-24
KR101162462B1 (ko) 2012-07-04
NO342515B1 (no) 2018-06-04
ES2380177T3 (es) 2012-05-09
JP2013228740A (ja) 2013-11-07
JP5700714B2 (ja) 2015-04-15
MY164995A (en) 2018-02-28
PL2113911T3 (pl) 2012-06-29
EP2884490B1 (en) 2016-06-29
EP2884490A1 (en) 2015-06-17
NO20170988A1 (no) 2009-05-14
CN101529502B (zh) 2012-07-25
KR101162455B1 (ko) 2012-07-04
MY155487A (en) 2015-10-30
IL226224A (en) 2016-02-29
ATE539432T1 (de) 2012-01-15
CA2667059C (en) 2014-10-21
BRPI0716004A8 (pt) 2019-10-08
AU2007312696B2 (en) 2011-04-21
EP2113911B1 (en) 2011-12-28
EP2378516A1 (en) 2011-10-19
EP2378516B1 (en) 2015-01-07
ES2531568T3 (es) 2015-03-17
KR20110049886A (ko) 2011-05-12
ZA200901650B (en) 2010-03-31
RU2009109129A (ru) 2010-11-27
HK1138423A1 (en) 2010-08-20
HK1128058A1 (en) 2009-10-16
BRPI0716004B1 (pt) 2020-11-17
EP2113910B1 (en) 2011-09-21
HK1163332A1 (en) 2012-09-07
PL2884490T3 (pl) 2016-12-30
MY153289A (en) 2015-01-29
NO20170982A1 (no) 2009-05-14
JP2010507111A (ja) 2010-03-04
BRPI0716004A2 (pt) 2013-07-30
EP2074615A2 (en) 2009-07-01
KR20090076924A (ko) 2009-07-13
CN101529502A (zh) 2009-09-09
TWI355647B (en) 2012-01-01
PT2884490T (pt) 2016-10-13
CA2782476C (en) 2016-02-23
CN102243875B (zh) 2013-04-03
ATE525720T1 (de) 2011-10-15
JP5520994B2 (ja) 2014-06-11
CN102243875A (zh) 2011-11-16
JP5546863B2 (ja) 2014-07-09

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