BRPI0716004A8 - banco de filtros ["filterbank"] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência - Google Patents
banco de filtros ["filterbank"] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência Download PDFInfo
- Publication number
- BRPI0716004A8 BRPI0716004A8 BRPI0716004A BRPI0716004A BRPI0716004A8 BR PI0716004 A8 BRPI0716004 A8 BR PI0716004A8 BR PI0716004 A BRPI0716004 A BR PI0716004A BR PI0716004 A BRPI0716004 A BR PI0716004A BR PI0716004 A8 BRPI0716004 A8 BR PI0716004A8
- Authority
- BR
- Brazil
- 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
"banco de filtros ["filterbank"] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência".uma configuração de um banco de filtros de análise para filtrar uma pluralidade de quadros de entrada de domínio de tempo, em que um quadro de entrada consiste de um número de amostras de entrada ordenadas, compreende um ponto de janela configurado para gerar uma pluralidade de quadros com janelas, em que um quadro com janela consiste de uma pluralidade de amostras com janelas, em que o ponto de janela é configurado para processar a pluralidade de quadros de entrada de maneira sobreposta, usando um valor de avanço de amostra, em que o valor de avanço de amostra é menor do que o número de amostra de entrada ordenadas de um quadro de entrada dividido por dois, e umconversor tempo/frequência configurado para ofrnecer um quadro de saída que consista de um número de valores de saída, em que um quadro de saída é uma representação espectral de um quadro com janela.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR122019020171-4A BR122019020171B1 (pt) | 2006-10-18 | 2007-08-29 | Banco de filtros [filterbank] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86203206P | 2006-10-18 | 2006-10-18 | |
US60/862,032 | 2006-10-18 | ||
US11/744,641 | 2007-05-04 | ||
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 (3)
Publication Number | Publication Date |
---|---|
BRPI0716004A2 BRPI0716004A2 (pt) | 2013-07-30 |
BRPI0716004A8 true BRPI0716004A8 (pt) | 2019-10-08 |
BRPI0716004B1 BRPI0716004B1 (pt) | 2020-11-17 |
Family
ID=38904615
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0716004-6A BRPI0716004B1 (pt) | 2006-10-18 | 2007-08-29 | banco de filtros ["filterbank"] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência |
BR122019020171-4A BR122019020171B1 (pt) | 2006-10-18 | 2007-08-29 | Banco de filtros [filterbank] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR122019020171-4A BR122019020171B1 (pt) | 2006-10-18 | 2007-08-29 | Banco de filtros [filterbank] de análise, banco de filtros de síntese, codificador, decodificador, mixador e sistema de conferência |
Country Status (22)
Country | Link |
---|---|
US (6) | US8036903B2 (pt) |
EP (5) | EP2113910B1 (pt) |
JP (5) | JP5546863B2 (pt) |
KR (3) | KR101209410B1 (pt) |
CN (4) | CN102243874B (pt) |
AT (3) | ATE539432T1 (pt) |
AU (3) | AU2007312696B2 (pt) |
BR (2) | BRPI0716004B1 (pt) |
CA (3) | CA2782476C (pt) |
ES (5) | ES2592253T3 (pt) |
HK (4) | HK1138674A1 (pt) |
IL (4) | IL197757A (pt) |
MX (1) | MX2009004046A (pt) |
MY (4) | MY155487A (pt) |
NO (5) | NO342445B1 (pt) |
PL (5) | PL2884490T3 (pt) |
PT (1) | PT2884490T (pt) |
RU (1) | RU2426178C2 (pt) |
SG (2) | SG174836A1 (pt) |
TW (1) | TWI355647B (pt) |
WO (1) | WO2008046468A2 (pt) |
ZA (1) | ZA200901650B (pt) |
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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
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