GB2327835B - 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
GB2327835B
GB2327835B GB9814279A GB9814279A GB2327835B GB 2327835 B GB2327835 B GB 2327835B GB 9814279 A GB9814279 A GB 9814279A GB 9814279 A GB9814279 A GB 9814279A GB 2327835 B GB2327835 B GB 2327835B
Authority
GB
United Kingdom
Prior art keywords
speech
unit
determines
intelligible
listener
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 - Fee Related
Application number
GB9814279A
Other versions
GB9814279D0 (en
GB2327835A (en
Inventor
Ian Vince Mcloughlin
Robert James Chance
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.)
Simoco International Ltd
Original Assignee
Simoco International 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 International Ltd filed Critical Simoco International Ltd
Priority to GB9920667A priority Critical patent/GB2336978B/en
Priority to GB0001586A priority patent/GB2343822B/en
Publication of GB9814279D0 publication Critical patent/GB9814279D0/en
Publication of GB2327835A publication Critical patent/GB2327835A/en
Application granted granted Critical
Publication of GB2327835B publication Critical patent/GB2327835B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • 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
    • G10L21/003—Changing voice quality, e.g. pitch or formants
    • 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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • 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
    • G10L21/02—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 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
    • G10L21/003—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 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
    • G10L25/03—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 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
    • G10L25/03—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Telephonic Communication Services (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Machine Translation (AREA)
  • Document Processing Apparatus (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephone Function (AREA)

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.
GB9814279A 1997-07-02 1998-07-01 Method and apparatus for speech enhancement in a speech communication system Expired - Fee Related GB2327835B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9920667A GB2336978B (en) 1997-07-02 1998-07-01 Method and apparatus for speech enhancement in a speech communication system
GB0001586A GB2343822B (en) 1997-07-02 1998-07-01 Method and apparatus for speech enhancement in a speech communication system

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 (3)

Publication Number Publication Date
GB9814279D0 GB9814279D0 (en) 1998-09-02
GB2327835A GB2327835A (en) 1999-02-03
GB2327835B true GB2327835B (en) 2000-04-19

Family

ID=10815285

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9714001.6A Ceased GB9714001D0 (en) 1997-07-02 1997-07-02 Method and apparatus for speech enhancement in a speech communication system
GB9814279A Expired - Fee Related GB2327835B (en) 1997-07-02 1998-07-01 Method and apparatus for speech enhancement in a speech communication system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9714001.6A Ceased GB9714001D0 (en) 1997-07-02 1997-07-02 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)

Cited By (2)

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US9264836B2 (en) 2007-12-21 2016-02-16 Dts Llc System for adjusting perceived loudness of audio signals
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time

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SE9903553D0 (en) * 1999-01-27 1999-10-01 Lars Liljeryd Enhancing conceptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
FR2794322B1 (en) * 1999-05-27 2001-06-22 Sagem NOISE SUPPRESSION PROCESS
US7120579B1 (en) 1999-07-28 2006-10-10 Clear Audio Ltd. Filter banked gain control of audio in a noisy environment
US6876968B2 (en) * 2001-03-08 2005-04-05 Matsushita Electric Industrial Co., Ltd. Run time synthesizer adaptation to improve intelligibility of synthesized speech
DE10124189A1 (en) * 2001-05-17 2002-11-21 Siemens Ag Signal reception in digital communications system involves generating output background signal with bandwidth greater than that of background signal characterized by received data
JP2003255993A (en) * 2002-03-04 2003-09-10 Ntt Docomo Inc System, method, and program for speech recognition, and system, method, and program for speech synthesis
WO2004002028A2 (en) * 2002-06-19 2003-12-31 Koninklijke Philips Electronics N.V. Audio signal processing apparatus and method
US20060126859A1 (en) * 2003-01-31 2006-06-15 Claus Elberling Sound system improving speech intelligibility
KR20050049103A (en) * 2003-11-21 2005-05-25 삼성전자주식회사 Method and apparatus for enhancing dialog using formant
KR101215944B1 (en) * 2004-09-07 2012-12-27 센시어 피티와이 엘티디 Hearing protector and Method for sound enhancement
US8280730B2 (en) 2005-05-25 2012-10-02 Motorola Mobility Llc Method and apparatus of increasing speech intelligibility in noisy environments
GB2433849B (en) 2005-12-29 2008-05-21 Motorola Inc Telecommunications terminal and method of operation of the terminal
DE102006001730A1 (en) 2006-01-13 2007-07-19 Robert Bosch Gmbh Sound system, method for improving the voice quality and / or intelligibility of voice announcements and computer program
EP1814109A1 (en) * 2006-01-27 2007-08-01 Texas Instruments Incorporated Voice amplification apparatus for modelling the Lombard effect
JP2007295347A (en) * 2006-04-26 2007-11-08 Mitsubishi Electric Corp Voice processor
KR101414233B1 (en) 2007-01-05 2014-07-02 삼성전자 주식회사 Apparatus and method for improving speech intelligibility
JP4926005B2 (en) * 2007-11-13 2012-05-09 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 Audio signal processing apparatus, audio signal processing method, and communication terminal
JP5453740B2 (en) * 2008-07-02 2014-03-26 富士通株式会社 Speech enhancement device
US8538042B2 (en) 2009-08-11 2013-09-17 Dts Llc System for increasing perceived loudness of speakers
EP2372700A1 (en) * 2010-03-11 2011-10-05 Oticon A/S A speech intelligibility predictor and applications thereof
US9117455B2 (en) 2011-07-29 2015-08-25 Dts Llc 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
US9015044B2 (en) 2012-03-05 2015-04-21 Malaspina Labs (Barbados) Inc. Formant based speech reconstruction from noisy signals
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
EP3107097B1 (en) 2015-06-17 2017-11-15 Nxp B.V. Improved speech intelligilibility
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
EP3566469B1 (en) 2017-01-03 2020-04-01 Lizn APS Speech intelligibility enhancing system
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
CN109346058B (en) * 2018-11-29 2024-06-28 西安交通大学 Voice acoustic feature expansion system
US11817114B2 (en) * 2019-12-09 2023-11-14 Dolby Laboratories Licensing Corporation Content and environmentally aware environmental noise compensation

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US4532648A (en) * 1981-10-22 1985-07-30 Nissan Motor Company, Limited Speech recognition system for an automotive vehicle
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Cited By (3)

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Publication number Priority date Publication date Assignee Title
US9264836B2 (en) 2007-12-21 2016-02-16 Dts Llc System for adjusting perceived loudness of audio signals
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time
US9559656B2 (en) 2012-04-12 2017-01-31 Dts Llc System for adjusting loudness of audio signals in real time

Also Published As

Publication number Publication date
GB9814279D0 (en) 1998-09-02
JP2002507291A (en) 2002-03-05
CA2235455A1 (en) 1999-01-02
DE69804310D1 (en) 2002-04-25
EP0993670B1 (en) 2002-03-20
ZA985607B (en) 2000-06-01
GB9714001D0 (en) 1997-09-10
PL337717A1 (en) 2000-08-28
CN1265217A (en) 2000-08-30
GB2327835A (en) 1999-02-03
ATE214832T1 (en) 2002-04-15
WO1999001863A1 (en) 1999-01-14
KR20010014352A (en) 2001-02-26
EP0993670A1 (en) 2000-04-19
AU8227798A (en) 1999-01-25

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020701