CA2382175C - Noisy acoustic signal enhancement - Google Patents

Noisy acoustic signal enhancement Download PDF

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Publication number
CA2382175C
CA2382175C CA2382175A CA2382175A CA2382175C CA 2382175 C CA2382175 C CA 2382175C CA 2382175 A CA2382175 A CA 2382175A CA 2382175 A CA2382175 A CA 2382175A CA 2382175 C CA2382175 C CA 2382175C
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CA
Canada
Prior art keywords
signal
noise
time
template
frequency representation
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
Application number
CA2382175A
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English (en)
French (fr)
Other versions
CA2382175A1 (en
Inventor
Pierre Zakarauskas
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.)
BlackBerry Ltd
Original Assignee
QNX Software Systems Wavemakers Inc
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 QNX Software Systems Wavemakers Inc filed Critical QNX Software Systems Wavemakers Inc
Publication of CA2382175A1 publication Critical patent/CA2382175A1/en
Application granted granted Critical
Publication of CA2382175C publication Critical patent/CA2382175C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L21/0232—Processing in the frequency domain
    • 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
    • G10L21/0264—Noise filtering characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
    • 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)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Noise Elimination (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Amplifiers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
CA2382175A 1999-08-16 2000-08-11 Noisy acoustic signal enhancement Expired - Lifetime CA2382175C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/375,309 US6910011B1 (en) 1999-08-16 1999-08-16 Noisy acoustic signal enhancement
US09/375,309 1999-08-16
PCT/US2000/022201 WO2001013364A1 (en) 1999-08-16 2000-08-11 Method for enhancement of acoustic signal in noise

Publications (2)

Publication Number Publication Date
CA2382175A1 CA2382175A1 (en) 2001-02-22
CA2382175C true CA2382175C (en) 2010-02-23

Family

ID=23480366

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2382175A Expired - Lifetime CA2382175C (en) 1999-08-16 2000-08-11 Noisy acoustic signal enhancement

Country Status (8)

Country Link
US (2) US6910011B1 (enExample)
EP (1) EP1208563B1 (enExample)
JP (1) JP4764995B2 (enExample)
AT (1) ATE323937T1 (enExample)
AU (1) AU6769600A (enExample)
CA (1) CA2382175C (enExample)
DE (1) DE60027438T2 (enExample)
WO (1) WO2001013364A1 (enExample)

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Also Published As

Publication number Publication date
US6910011B1 (en) 2005-06-21
US20050222842A1 (en) 2005-10-06
DE60027438T2 (de) 2006-08-31
EP1208563A1 (en) 2002-05-29
WO2001013364A1 (en) 2001-02-22
US7231347B2 (en) 2007-06-12
CA2382175A1 (en) 2001-02-22
JP4764995B2 (ja) 2011-09-07
EP1208563B1 (en) 2006-04-19
JP2003507764A (ja) 2003-02-25
ATE323937T1 (de) 2006-05-15
AU6769600A (en) 2001-03-13
DE60027438D1 (de) 2006-05-24

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