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
Links
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
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)
- Noise Elimination (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Circuit For Audible Band Transducer (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.
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 (22)
Country | Link |
---|---|
US (6) | US8036903B2 (es) |
EP (5) | EP2113910B1 (es) |
JP (5) | JP5546863B2 (es) |
KR (3) | KR101209410B1 (es) |
CN (4) | CN102243874B (es) |
AT (3) | ATE539432T1 (es) |
AU (3) | AU2007312696B2 (es) |
BR (2) | BRPI0716004B1 (es) |
CA (3) | CA2782476C (es) |
ES (5) | ES2592253T3 (es) |
HK (4) | HK1138674A1 (es) |
IL (4) | IL197757A (es) |
MX (1) | MX2009004046A (es) |
MY (4) | MY155487A (es) |
NO (5) | NO342445B1 (es) |
PL (5) | PL2884490T3 (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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2007
- 2007-05-04 US US11/744,641 patent/US8036903B2/en not_active Ceased
- 2007-08-29 AT AT09010179T patent/ATE539432T1/de active
- 2007-08-29 SG SG2011068780A patent/SG174836A1/en unknown
- 2007-08-29 CN CN2011102195918A patent/CN102243874B/zh active Active
- 2007-08-29 MY MYPI2011003539A patent/MY155487A/en unknown
- 2007-08-29 EP EP09010178A patent/EP2113910B1/en active Active
- 2007-08-29 CA CA2782476A patent/CA2782476C/en active Active
- 2007-08-29 EP EP11173652.6A patent/EP2378516B1/en active Active
- 2007-08-29 ES ES14199155.4T patent/ES2592253T3/es active Active
- 2007-08-29 ES ES09010178T patent/ES2374014T3/es active Active
- 2007-08-29 PT PT141991554T patent/PT2884490T/pt unknown
- 2007-08-29 CN CN200780038753XA patent/CN101529502B/zh active Active
- 2007-08-29 PL PL14199155.4T patent/PL2884490T3/pl unknown
- 2007-08-29 EP EP07801974A patent/EP2074615B1/en active Active
- 2007-08-29 WO PCT/EP2007/007553 patent/WO2008046468A2/en active Application Filing
- 2007-08-29 CN CN2011102193575A patent/CN102243873B/zh active Active
- 2007-08-29 EP EP14199155.4A patent/EP2884490B1/en active Active
- 2007-08-29 MY MYPI20091416A patent/MY153289A/en unknown
- 2007-08-29 KR KR1020097007979A patent/KR101209410B1/ko active IP Right Grant
- 2007-08-29 KR KR1020117007018A patent/KR101162462B1/ko active IP Right Grant
- 2007-08-29 MY MYPI2011003540A patent/MY155486A/en unknown
- 2007-08-29 SG SG2011068772A patent/SG174835A1/en unknown
- 2007-08-29 ES ES07801974T patent/ES2386206T3/es active Active
- 2007-08-29 JP JP2009532689A patent/JP5546863B2/ja active Active
- 2007-08-29 EP EP09010179A patent/EP2113911B1/en active Active
- 2007-08-29 MX MX2009004046A patent/MX2009004046A/es active IP Right Grant
- 2007-08-29 KR KR1020117007017A patent/KR101162455B1/ko active IP Right Grant
- 2007-08-29 MY MYPI2011003538A patent/MY164995A/en unknown
- 2007-08-29 BR BRPI0716004-6A patent/BRPI0716004B1/pt active IP Right Grant
- 2007-08-29 PL PL07801974T patent/PL2074615T3/pl unknown
- 2007-08-29 AT AT07801974T patent/ATE554480T1/de active
- 2007-08-29 BR BR122019020171-4A patent/BR122019020171B1/pt active IP Right Grant
- 2007-08-29 PL PL11173652T patent/PL2378516T3/pl unknown
- 2007-08-29 AU AU2007312696A patent/AU2007312696B2/en active Active
- 2007-08-29 PL PL09010178T patent/PL2113910T3/pl unknown
- 2007-08-29 CA CA2667059A patent/CA2667059C/en active Active
- 2007-08-29 PL PL09010179T patent/PL2113911T3/pl unknown
- 2007-08-29 ES ES11173652.6T patent/ES2531568T3/es active Active
- 2007-08-29 CN CN2011102196751A patent/CN102243875B/zh active Active
- 2007-08-29 RU RU2009109129/09A patent/RU2426178C2/ru active
- 2007-08-29 ES ES09010179T patent/ES2380177T3/es active Active
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