BRPI0514620A - método e aparelho para processar um conjunto de n sinais de áudio - Google Patents
método e aparelho para processar um conjunto de n sinais de áudioInfo
- Publication number
- BRPI0514620A BRPI0514620A BRPI0514620-8A BRPI0514620A BRPI0514620A BR PI0514620 A BRPI0514620 A BR PI0514620A BR PI0514620 A BRPI0514620 A BR PI0514620A BR PI0514620 A BRPI0514620 A BR PI0514620A
- Authority
- BR
- Brazil
- Prior art keywords
- audio signals
- characteristic
- signals
- time
- processing
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 4
- 230000001364 causal 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
- G10L19/008—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
- G10L19/02—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
MéTODO E APARELHO PARA PROCESSAR UM CONJUNTO DE N SINAIS DE áUDIO A presente invenção refere-se a cada um dentre N sinais de áudio que é filtrado com uma característica única de filtro de decorrelação (38), a característica sendo uma característica linear causal invariável com o tempo no domínio do tempo ou no equivalente do mesmo no domínio da freqüência, e, para cada característica de filtro de decorrelação (38), combinar (40, 44, 46), de uma maneira variável no tempo e na freqüência, seus sinais de entrada (Z~ i~) e de saída (Z-i) para proporcionar um conjunto de N sinais processados (X~ i~). O conjunto de características de filtro de decorrelação (38) é projetado de modo que todos os sinais de entrada e de saída são aproximadamente e mutuamente decorrelacionados. O conjunto de N sinais de áudio pode ser sintetizado a partir dos M sinais de áudio pela conversão para mais canais, onde M é um ou mais e N é maior do que M.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60472504P | 2004-08-25 | 2004-08-25 | |
US70013705P | 2005-07-18 | 2005-07-18 | |
US70578405P | 2005-08-05 | 2005-08-05 | |
PCT/US2005/030453 WO2006026452A1 (en) | 2004-08-25 | 2005-08-24 | Multichannel decorrelation in spatial audio coding |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0514620A true BRPI0514620A (pt) | 2008-06-17 |
BRPI0514620A8 BRPI0514620A8 (pt) | 2018-07-31 |
Family
ID=35448169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0514620A BRPI0514620A8 (pt) | 2004-08-25 | 2005-08-24 | Método e aparelho para processar um conjunto de n sinais de áudio |
Country Status (16)
Country | Link |
---|---|
US (1) | US8015018B2 (pt) |
EP (1) | EP1782417B1 (pt) |
JP (1) | JP4909272B2 (pt) |
KR (1) | KR101178060B1 (pt) |
CN (1) | CN101010723B (pt) |
AT (1) | ATE447756T1 (pt) |
AU (1) | AU2005280041B2 (pt) |
BR (1) | BRPI0514620A8 (pt) |
CA (1) | CA2576739C (pt) |
DE (1) | DE602005017502D1 (pt) |
HK (1) | HK1099839A1 (pt) |
IL (1) | IL181406A (pt) |
MX (1) | MX2007001949A (pt) |
MY (1) | MY143850A (pt) |
TW (1) | TWI393121B (pt) |
WO (1) | WO2006026452A1 (pt) |
Families Citing this family (55)
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-
2005
- 2005-08-19 TW TW094128376A patent/TWI393121B/zh active
- 2005-08-23 MY MYPI20053941A patent/MY143850A/en unknown
- 2005-08-24 AT AT05792504T patent/ATE447756T1/de not_active IP Right Cessation
- 2005-08-24 DE DE602005017502T patent/DE602005017502D1/de active Active
- 2005-08-24 EP EP05792504A patent/EP1782417B1/en active Active
- 2005-08-24 JP JP2007530171A patent/JP4909272B2/ja active Active
- 2005-08-24 MX MX2007001949A patent/MX2007001949A/es active IP Right Grant
- 2005-08-24 CA CA2576739A patent/CA2576739C/en active Active
- 2005-08-24 KR KR1020077003521A patent/KR101178060B1/ko active IP Right Grant
- 2005-08-24 AU AU2005280041A patent/AU2005280041B2/en active Active
- 2005-08-24 WO PCT/US2005/030453 patent/WO2006026452A1/en active Application Filing
- 2005-08-24 BR BRPI0514620A patent/BRPI0514620A8/pt not_active Application Discontinuation
- 2005-08-24 CN CN2005800275889A patent/CN101010723B/zh active Active
- 2005-08-24 US US11/661,010 patent/US8015018B2/en active Active
-
2007
- 2007-02-18 IL IL181406A patent/IL181406A/en active IP Right Grant
- 2007-07-03 HK HK07107075.6A patent/HK1099839A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US20080126104A1 (en) | 2008-05-29 |
CA2576739A1 (en) | 2006-03-09 |
JP2008511044A (ja) | 2008-04-10 |
WO2006026452A1 (en) | 2006-03-09 |
IL181406A0 (en) | 2007-07-04 |
JP4909272B2 (ja) | 2012-04-04 |
IL181406A (en) | 2011-04-28 |
HK1099839A1 (en) | 2007-08-24 |
KR101178060B1 (ko) | 2012-08-30 |
AU2005280041A1 (en) | 2006-03-09 |
US8015018B2 (en) | 2011-09-06 |
TW200611241A (en) | 2006-04-01 |
DE602005017502D1 (de) | 2009-12-17 |
EP1782417B1 (en) | 2009-11-04 |
CN101010723B (zh) | 2011-05-18 |
EP1782417A1 (en) | 2007-05-09 |
AU2005280041B2 (en) | 2010-04-22 |
CN101010723A (zh) | 2007-08-01 |
BRPI0514620A8 (pt) | 2018-07-31 |
MY143850A (en) | 2011-07-15 |
ATE447756T1 (de) | 2009-11-15 |
TWI393121B (zh) | 2013-04-11 |
MX2007001949A (es) | 2007-04-23 |
CA2576739C (en) | 2013-08-13 |
KR20070051856A (ko) | 2007-05-18 |
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