WO2005086161A3 - Amplification numerique de signaux audio - Google Patents
Amplification numerique de signaux audio Download PDFInfo
- Publication number
- WO2005086161A3 WO2005086161A3 PCT/EP2005/050462 EP2005050462W WO2005086161A3 WO 2005086161 A3 WO2005086161 A3 WO 2005086161A3 EP 2005050462 W EP2005050462 W EP 2005050462W WO 2005086161 A3 WO2005086161 A3 WO 2005086161A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- difference
- candidates
- selecting
- relates
- audio signals
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 2
- 230000003321 amplification Effects 0.000 title 1
- 238000003199 nucleic acid amplification method Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
-
- 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
- G10L19/26—Pre-filtering or post-filtering
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05707931A EP1714391A2 (fr) | 2004-02-06 | 2005-02-02 | Procede et dispositif de conservation de signaux numeriques de formats heterogenes et son application a l'amplification numerique de signaux audio |
JP2006551850A JP2007528151A (ja) | 2004-02-06 | 2005-02-02 | 異種のフォーマットを有するデジタル信号のバージョンのための方法およびデバイス、ならびにオーディオ信号のデジタル増幅へのそのような方法およびデバイスの適用 |
US10/588,644 US7292171B2 (en) | 2004-02-06 | 2005-02-02 | Method and device for the version of digital signals with heterogeneous formats and application thereof to the digital amplification of audio signals |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR04/50224 | 2004-02-06 | ||
FR0450224A FR2866166B1 (fr) | 2004-02-06 | 2004-02-06 | Modulateur en treillis vectoriel |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005086161A2 WO2005086161A2 (fr) | 2005-09-15 |
WO2005086161A3 true WO2005086161A3 (fr) | 2006-05-11 |
Family
ID=34778712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/050462 WO2005086161A2 (fr) | 2004-02-06 | 2005-02-02 | Amplification numerique de signaux audio |
Country Status (5)
Country | Link |
---|---|
US (1) | US7292171B2 (fr) |
EP (1) | EP1714391A2 (fr) |
JP (1) | JP2007528151A (fr) |
FR (1) | FR2866166B1 (fr) |
WO (1) | WO2005086161A2 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4699300B2 (ja) * | 2006-06-28 | 2011-06-08 | シャープ株式会社 | 発振装置 |
GB2441572B (en) | 2006-09-05 | 2009-01-28 | Stream Technology Ltd M | Switching amplifier |
US7953595B2 (en) * | 2006-10-18 | 2011-05-31 | Polycom, Inc. | Dual-transform coding of audio signals |
US7966175B2 (en) * | 2006-10-18 | 2011-06-21 | Polycom, Inc. | Fast lattice vector quantization |
TWI329983B (en) * | 2006-11-27 | 2010-09-01 | Realtek Semiconductor Corp | Methods for controlling power stage of power amplifier and related apparatuses |
CN101527547B (zh) * | 2008-03-07 | 2015-03-04 | 瑞昱半导体股份有限公司 | 控制功率放大器的功率输出级的方法及相关装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5675590A (en) * | 1994-11-23 | 1997-10-07 | At&T Wireless Services, Inc. | Cyclic trellis coded modulation |
US20020154247A1 (en) * | 2001-04-23 | 2002-10-24 | Koninklijke Philips Electronics N.V. | System and method for reducing error propagation in a decision feedback equalizer of ATSC VSB receiver |
US20030122692A1 (en) * | 2002-01-02 | 2003-07-03 | Roeckner William J. | Method and apparatus for generating a pulse width modulated signal |
WO2003100983A1 (fr) * | 2002-05-20 | 2003-12-04 | Cirrus Logic, Inc. | Modulateurs delta-sigma a filtrage passe-bas numerique integral |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6473457B1 (en) * | 1999-05-07 | 2002-10-29 | Motorola, Inc. | Method and apparatus for producing a pulse width modulated signal |
AU2002244265A1 (en) * | 2001-07-13 | 2003-01-29 | Cirrus Logic, Inc. | Circuits, systems and methods for volume control in 1-bit digital audio systems |
WO2003047309A1 (fr) * | 2001-11-30 | 2003-06-05 | Sonion A/S | Moteur a haute efficacite destine a des hauts-parleurs miniatures |
JP3960868B2 (ja) * | 2002-06-27 | 2007-08-15 | パイオニア株式会社 | パルス幅変調装置およびパルス幅変調方法 |
AU2003255931A1 (en) * | 2002-09-30 | 2004-04-19 | Koninklijke Philips Electronics N.V. | Sigma-delta modulation |
-
2004
- 2004-02-06 FR FR0450224A patent/FR2866166B1/fr not_active Expired - Fee Related
-
2005
- 2005-02-02 WO PCT/EP2005/050462 patent/WO2005086161A2/fr not_active Application Discontinuation
- 2005-02-02 US US10/588,644 patent/US7292171B2/en not_active Expired - Fee Related
- 2005-02-02 EP EP05707931A patent/EP1714391A2/fr not_active Withdrawn
- 2005-02-02 JP JP2006551850A patent/JP2007528151A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5675590A (en) * | 1994-11-23 | 1997-10-07 | At&T Wireless Services, Inc. | Cyclic trellis coded modulation |
US20020154247A1 (en) * | 2001-04-23 | 2002-10-24 | Koninklijke Philips Electronics N.V. | System and method for reducing error propagation in a decision feedback equalizer of ATSC VSB receiver |
US20030122692A1 (en) * | 2002-01-02 | 2003-07-03 | Roeckner William J. | Method and apparatus for generating a pulse width modulated signal |
WO2003100983A1 (fr) * | 2002-05-20 | 2003-12-04 | Cirrus Logic, Inc. | Modulateurs delta-sigma a filtrage passe-bas numerique integral |
Non-Patent Citations (1)
Title |
---|
FLOROS A C ET AL: "A novel and efficient PCM to PWM converter for digital audio amplifiers", ELECTRONICS, CIRCUITS AND SYSTEMS, 1999. PROCEEDINGS OF ICECS '99. THE 6TH IEEE INTERNATIONAL CONFERENCE ON PAFOS, CYPRUS 5-8 SEPT. 1999, PISCATAWAY, NJ, USA,IEEE, US, vol. 1, 5 September 1999 (1999-09-05), pages 165 - 168, XP010361459, ISBN: 0-7803-5682-9 * |
Also Published As
Publication number | Publication date |
---|---|
EP1714391A2 (fr) | 2006-10-25 |
US20070194961A1 (en) | 2007-08-23 |
WO2005086161A2 (fr) | 2005-09-15 |
JP2007528151A (ja) | 2007-10-04 |
FR2866166B1 (fr) | 2006-06-16 |
US7292171B2 (en) | 2007-11-06 |
FR2866166A1 (fr) | 2005-08-12 |
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