DE69732800D1 - Modifikation von audiosignalen mittels fourier-transformation - Google Patents
Modifikation von audiosignalen mittels fourier-transformationInfo
- Publication number
- DE69732800D1 DE69732800D1 DE69732800T DE69732800T DE69732800D1 DE 69732800 D1 DE69732800 D1 DE 69732800D1 DE 69732800 T DE69732800 T DE 69732800T DE 69732800 T DE69732800 T DE 69732800T DE 69732800 D1 DE69732800 D1 DE 69732800D1
- Authority
- DE
- Germany
- Prior art keywords
- audio signals
- fourier transformation
- modifying audio
- modifying
- fourier
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 230000009466 transformation Effects 0.000 title 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/04—Time compression or expansion
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Complex Calculations (AREA)
- Electrophonic Musical Instruments (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/745,955 US6112169A (en) | 1996-11-07 | 1996-11-07 | System for fourier transform-based modification of audio |
PCT/US1997/020010 WO1998020481A1 (en) | 1996-11-07 | 1997-11-06 | System for fourier transform-based modification of audio |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69732800D1 true DE69732800D1 (de) | 2005-04-21 |
Family
ID=24998942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69732800T Expired - Lifetime DE69732800D1 (de) | 1996-11-07 | 1997-11-06 | Modifikation von audiosignalen mittels fourier-transformation |
Country Status (4)
Country | Link |
---|---|
US (1) | US6112169A (de) |
EP (1) | EP1008138B1 (de) |
DE (1) | DE69732800D1 (de) |
WO (1) | WO1998020481A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6549884B1 (en) | 1999-09-21 | 2003-04-15 | Creative Technology Ltd. | Phase-vocoder pitch-shifting |
US6868377B1 (en) | 1999-11-23 | 2005-03-15 | Creative Technology Ltd. | Multiband phase-vocoder for the modification of audio or speech signals |
US20060100861A1 (en) * | 2002-10-14 | 2006-05-11 | Koninkijkle Phillips Electronics N.V | Signal filtering |
US8019598B2 (en) * | 2002-11-15 | 2011-09-13 | Texas Instruments Incorporated | Phase locking method for frequency domain time scale modification based on a bark-scale spectral partition |
WO2004049304A1 (ja) * | 2002-11-25 | 2004-06-10 | Matsushita Electric Industrial Co., Ltd. | 音声合成方法および音声合成装置 |
US7277550B1 (en) * | 2003-06-24 | 2007-10-02 | Creative Technology Ltd. | Enhancing audio signals by nonlinear spectral operations |
AU2005201813B2 (en) * | 2005-04-29 | 2011-03-24 | Phonak Ag | Sound processing with frequency transposition |
US20070237341A1 (en) * | 2006-04-05 | 2007-10-11 | Creative Technology Ltd | Frequency domain noise attenuation utilizing two transducers |
US7594423B2 (en) | 2007-11-07 | 2009-09-29 | Freescale Semiconductor, Inc. | Knock signal detection in automotive systems |
US9497540B2 (en) * | 2009-12-23 | 2016-11-15 | Conexant Systems, Inc. | System and method for reducing rub and buzz distortion |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4246617A (en) * | 1979-07-30 | 1981-01-20 | Massachusetts Institute Of Technology | Digital system for changing the rate of recorded speech |
AU2944684A (en) * | 1983-06-17 | 1984-12-20 | University Of Melbourne, The | Speech recognition |
US4885790A (en) * | 1985-03-18 | 1989-12-05 | Massachusetts Institute Of Technology | Processing of acoustic waveforms |
US4856068A (en) * | 1985-03-18 | 1989-08-08 | Massachusetts Institute Of Technology | Audio pre-processing methods and apparatus |
US4937873A (en) * | 1985-03-18 | 1990-06-26 | Massachusetts Institute Of Technology | Computationally efficient sine wave synthesis for acoustic waveform processing |
CA1332982C (en) * | 1987-04-02 | 1994-11-08 | Robert J. Mcauley | Coding of acoustic waveforms |
US5054072A (en) * | 1987-04-02 | 1991-10-01 | Massachusetts Institute Of Technology | Coding of acoustic waveforms |
JPH0727397B2 (ja) * | 1988-07-21 | 1995-03-29 | シャープ株式会社 | 音声合成装置 |
GB2232801B (en) * | 1989-05-18 | 1993-12-22 | Medical Res Council | Apparatus and methods for the generation of stabilised images from waveforms |
US5327518A (en) * | 1991-08-22 | 1994-07-05 | Georgia Tech Research Corporation | Audio analysis/synthesis system |
US5602959A (en) * | 1994-12-05 | 1997-02-11 | Motorola, Inc. | Method and apparatus for characterization and reconstruction of speech excitation waveforms |
-
1996
- 1996-11-07 US US08/745,955 patent/US6112169A/en not_active Expired - Lifetime
-
1997
- 1997-11-06 WO PCT/US1997/020010 patent/WO1998020481A1/en active IP Right Grant
- 1997-11-06 DE DE69732800T patent/DE69732800D1/de not_active Expired - Lifetime
- 1997-11-06 EP EP97949359A patent/EP1008138B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1998020481A1 (en) | 1998-05-14 |
US6112169A (en) | 2000-08-29 |
EP1008138A1 (de) | 2000-06-14 |
EP1008138B1 (de) | 2005-03-16 |
EP1008138A4 (de) | 2002-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |