FR2799601B1 - Dispositif et procede d'annulation de bruit - Google Patents

Dispositif et procede d'annulation de bruit

Info

Publication number
FR2799601B1
FR2799601B1 FR9912666A FR9912666A FR2799601B1 FR 2799601 B1 FR2799601 B1 FR 2799601B1 FR 9912666 A FR9912666 A FR 9912666A FR 9912666 A FR9912666 A FR 9912666A FR 2799601 B1 FR2799601 B1 FR 2799601B1
Authority
FR
France
Prior art keywords
noise cancellation
cancellation device
noise
cancellation
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
FR9912666A
Other languages
English (en)
Other versions
FR2799601A1 (fr
Inventor
Simon Barakat
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.)
Axalto SA
Original Assignee
Schlumberger Systemes SA
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 Schlumberger Systemes SA filed Critical Schlumberger Systemes SA
Priority to FR9912666A priority Critical patent/FR2799601B1/fr
Publication of FR2799601A1 publication Critical patent/FR2799601A1/fr
Application granted granted Critical
Publication of FR2799601B1 publication Critical patent/FR2799601B1/fr
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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses

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)
  • Telephone Function (AREA)
FR9912666A 1999-10-08 1999-10-08 Dispositif et procede d'annulation de bruit Expired - Fee Related FR2799601B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9912666A FR2799601B1 (fr) 1999-10-08 1999-10-08 Dispositif et procede d'annulation de bruit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9912666A FR2799601B1 (fr) 1999-10-08 1999-10-08 Dispositif et procede d'annulation de bruit

Publications (2)

Publication Number Publication Date
FR2799601A1 FR2799601A1 (fr) 2001-04-13
FR2799601B1 true FR2799601B1 (fr) 2002-08-02

Family

ID=9550797

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9912666A Expired - Fee Related FR2799601B1 (fr) 1999-10-08 1999-10-08 Dispositif et procede d'annulation de bruit

Country Status (1)

Country Link
FR (1) FR2799601B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5742927A (en) * 1993-02-12 1998-04-21 British Telecommunications Public Limited Company Noise reduction apparatus using spectral subtraction or scaling and signal attenuation between formant regions
FR2704111B1 (fr) * 1993-04-16 1995-05-24 Sextant Avionique Procédé de détection énergétique de signaux noyés dans du bruit.
SE506034C2 (sv) * 1996-02-01 1997-11-03 Ericsson Telefon Ab L M Förfarande och anordning för förbättring av parametrar representerande brusigt tal

Also Published As

Publication number Publication date
FR2799601A1 (fr) 2001-04-13

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Legal Events

Date Code Title Description
ST Notification of lapse