GB2311919A - Speech processing - Google Patents

Speech processing

Info

Publication number
GB2311919A
GB2311919A GB9712310A GB9712310A GB2311919A GB 2311919 A GB2311919 A GB 2311919A GB 9712310 A GB9712310 A GB 9712310A GB 9712310 A GB9712310 A GB 9712310A GB 2311919 A GB2311919 A GB 2311919A
Authority
GB
United Kingdom
Prior art keywords
speech processing
speech waveform
wavelet transform
transform
clipping
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.)
Granted
Application number
GB9712310A
Other versions
GB9712310D0 (en
GB2311919B (en
Inventor
Stephen Summerfield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Publication of GB9712310D0 publication Critical patent/GB9712310D0/en
Publication of GB2311919A publication Critical patent/GB2311919A/en
Application granted granted Critical
Publication of GB2311919B publication Critical patent/GB2311919B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0216—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 using wavelet decomposition

Abstract

A clipped input speech waveform is divided (3) into a plurality of a series of signals by means of a wavelet transform such as the Daubechies wavelet transform, which are then scaled or otherwise processed (4) to reduce the effects of clipping, prior to reconstruction (5) of the speech waveform using the inverse transform.
GB9712310A 1994-12-15 1995-12-15 Speech processing Expired - Fee Related GB2311919B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP94309391 1994-12-15
PCT/GB1995/002943 WO1996018996A1 (en) 1994-12-15 1995-12-15 Speech processing

Publications (3)

Publication Number Publication Date
GB9712310D0 GB9712310D0 (en) 1997-08-13
GB2311919A true GB2311919A (en) 1997-10-08
GB2311919B GB2311919B (en) 1999-04-28

Family

ID=8217947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9712310A Expired - Fee Related GB2311919B (en) 1994-12-15 1995-12-15 Speech processing

Country Status (8)

Country Link
US (1) US6009385A (en)
EP (1) EP0797824B1 (en)
AU (1) AU4265796A (en)
DE (1) DE69515509T2 (en)
ES (1) ES2144651T3 (en)
GB (1) GB2311919B (en)
HK (1) HK1004622A1 (en)
WO (1) WO1996018996A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005063352B4 (en) * 2005-07-29 2008-04-30 V&M Deutschland Gmbh Non-destructive testing of pipes for surface defects
EP1910814A2 (en) * 2005-07-29 2008-04-16 V & M Deutschland GmbH Method for error-free checking of tubes for surface faults
JP4942353B2 (en) * 2006-02-01 2012-05-30 株式会社ジェイテクト Sound or vibration analysis method and sound or vibration analysis apparatus
US8359195B2 (en) * 2009-03-26 2013-01-22 LI Creative Technologies, Inc. Method and apparatus for processing audio and speech signals
EP2757558A1 (en) 2013-01-18 2014-07-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Time domain level adjustment for audio signal decoding or encoding
CN109979475A (en) * 2017-12-26 2019-07-05 深圳Tcl新技术有限公司 Solve method, system and the storage medium of echo cancellor failure
US20210251574A1 (en) * 2018-08-24 2021-08-19 The Trustees Of Dartmouth College Microcontroller for recording and storing physiological data

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002992A1 (en) * 1983-01-27 1984-08-02 Auretina Patent Management Signal processing and synthesizing method and apparatus
WO1989006877A1 (en) * 1988-01-18 1989-07-27 British Telecommunications Public Limited Company Noise reduction
US4974187A (en) * 1989-08-02 1990-11-27 Aware, Inc. Modular digital signal processing system
EP0621582A2 (en) * 1993-04-23 1994-10-26 Matra Communication Method of speech recognition with training phase

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351338A (en) * 1992-07-06 1994-09-27 Telefonaktiebolaget L M Ericsson Time variable spectral analysis based on interpolation for speech coding
US5486833A (en) * 1993-04-02 1996-01-23 Barrett; Terence W. Active signalling systems
US5721694A (en) * 1994-05-10 1998-02-24 Aura System, Inc. Non-linear deterministic stochastic filtering method and system
US5781881A (en) * 1995-10-19 1998-07-14 Deutsche Telekom Ag Variable-subframe-length speech-coding classes derived from wavelet-transform parameters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002992A1 (en) * 1983-01-27 1984-08-02 Auretina Patent Management Signal processing and synthesizing method and apparatus
WO1989006877A1 (en) * 1988-01-18 1989-07-27 British Telecommunications Public Limited Company Noise reduction
US4974187A (en) * 1989-08-02 1990-11-27 Aware, Inc. Modular digital signal processing system
EP0621582A2 (en) * 1993-04-23 1994-10-26 Matra Communication Method of speech recognition with training phase

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ICASSP 92:1992 IEEE International Conference on Acoustics, speech and signal processing, San Fransi *
modified wavelet transform-An application to auditory signalprocessing" pages 85-88 *
-sco,CA,US,23-26 March 1992,ISBN 0-7803-0532-9,1992,NY,US Irino et al:"Signal reconstruction from *

Also Published As

Publication number Publication date
DE69515509D1 (en) 2000-04-13
GB9712310D0 (en) 1997-08-13
GB2311919B (en) 1999-04-28
DE69515509T2 (en) 2000-09-21
EP0797824A1 (en) 1997-10-01
ES2144651T3 (en) 2000-06-16
US6009385A (en) 1999-12-28
AU4265796A (en) 1996-07-03
EP0797824B1 (en) 2000-03-08
HK1004622A1 (en) 1998-11-27
WO1996018996A1 (en) 1996-06-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20101215