ZA985607B - Method and apparatus for speech enhancement in a speech communication system. - Google Patents

Method and apparatus for speech enhancement in a speech communication system.

Info

Publication number
ZA985607B
ZA985607B ZA9805607A ZA985607A ZA985607B ZA 985607 B ZA985607 B ZA 985607B ZA 9805607 A ZA9805607 A ZA 9805607A ZA 985607 A ZA985607 A ZA 985607A ZA 985607 B ZA985607 B ZA 985607B
Authority
ZA
South Africa
Prior art keywords
speech
unit
determines
intelligible
listener
Prior art date
Application number
ZA9805607A
Inventor
Robert James Chance
Ian Vince Mcloughlin
Original Assignee
Simoco Int Ltd
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 Simoco Int Ltd filed Critical Simoco Int Ltd
Publication of ZA985607B publication Critical patent/ZA985607B/en

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
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/003—Changing voice quality, e.g. pitch or formants
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/003—Changing voice quality, e.g. pitch or formants
    • G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
    • G10L21/013—Adapting to target pitch
    • G10L2021/0135—Voice conversion or morphing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/15—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being formant information
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/24—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being the cepstrum
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility

Abstract

The characteristics of the speech received by the decoding unit are altered by a processing unit 10 based upon an analysis of the listener's current background noise before the speech is output to enhance its intelligibility to a listener. An analysis unit 12 determines the type and level of the background noise by use of a microphone 13. A decision unit 11 then determines whether the speech currently being received and replayed would be intelligible to an average listener in the current background noise. If unit 11 determines that the speech is readily intelligible then no processing is necessary and the processing unit 10 does not alter the speech which has been passed to it. However, if unit 11 determines that the speech would be unintelligible, then unit 10 alters the speech before passing it to the output to make the speech more intelligible. In a particularly preferred embodiment, the speech characteristics are altered by altering line spectral pair/formant data representing the speech.
ZA9805607A 1997-07-02 1998-06-26 Method and apparatus for speech enhancement in a speech communication system. ZA985607B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9714001.6A GB9714001D0 (en) 1997-07-02 1997-07-02 Method and apparatus for speech enhancement in a speech communication system

Publications (1)

Publication Number Publication Date
ZA985607B true ZA985607B (en) 2000-06-01

Family

ID=10815285

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9805607A ZA985607B (en) 1997-07-02 1998-06-26 Method and apparatus for speech enhancement in a speech communication system.

Country Status (12)

Country Link
EP (1) EP0993670B1 (en)
JP (1) JP2002507291A (en)
KR (1) KR20010014352A (en)
CN (1) CN1265217A (en)
AT (1) ATE214832T1 (en)
AU (1) AU8227798A (en)
CA (1) CA2235455A1 (en)
DE (1) DE69804310D1 (en)
GB (2) GB9714001D0 (en)
PL (1) PL337717A1 (en)
WO (1) WO1999001863A1 (en)
ZA (1) ZA985607B (en)

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US8280730B2 (en) 2005-05-25 2012-10-02 Motorola Mobility Llc Method and apparatus of increasing speech intelligibility in noisy environments
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JP5453740B2 (en) * 2008-07-02 2014-03-26 富士通株式会社 Speech enhancement device
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EP2372700A1 (en) * 2010-03-11 2011-10-05 Oticon A/S A speech intelligibility predictor and applications thereof
KR102060208B1 (en) * 2011-07-29 2019-12-27 디티에스 엘엘씨 Adaptive voice intelligibility processor
CN103002105A (en) * 2011-09-16 2013-03-27 宏碁股份有限公司 Mobile communication method capable of improving articulation of communication contents
CN103297896B (en) * 2012-02-27 2016-07-06 联想(北京)有限公司 A kind of audio-frequency inputting method and electronic equipment
US9020818B2 (en) * 2012-03-05 2015-04-28 Malaspina Labs (Barbados) Inc. Format based speech reconstruction from noisy signals
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time
EP3010017A1 (en) * 2014-10-14 2016-04-20 Thomson Licensing Method and apparatus for separating speech data from background data in audio communication
JP6565206B2 (en) * 2015-02-20 2019-08-28 ヤマハ株式会社 Audio processing apparatus and audio processing method
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US9847093B2 (en) 2015-06-19 2017-12-19 Samsung Electronics Co., Ltd. Method and apparatus for processing speech signal
JP6790732B2 (en) * 2016-11-02 2020-11-25 ヤマハ株式会社 Signal processing method and signal processing device
WO2019127112A1 (en) * 2017-12-27 2019-07-04 深圳前海达闼云端智能科技有限公司 Voice interaction method and device and intelligent terminal
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Also Published As

Publication number Publication date
DE69804310D1 (en) 2002-04-25
PL337717A1 (en) 2000-08-28
EP0993670A1 (en) 2000-04-19
CA2235455A1 (en) 1999-01-02
CN1265217A (en) 2000-08-30
KR20010014352A (en) 2001-02-26
GB2327835A (en) 1999-02-03
EP0993670B1 (en) 2002-03-20
GB9714001D0 (en) 1997-09-10
ATE214832T1 (en) 2002-04-15
AU8227798A (en) 1999-01-25
JP2002507291A (en) 2002-03-05
WO1999001863A1 (en) 1999-01-14
GB2327835B (en) 2000-04-19
GB9814279D0 (en) 1998-09-02

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