CA2397084A1 - Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank - Google Patents

Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank Download PDF

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Publication number
CA2397084A1
CA2397084A1 CA 2397084 CA2397084A CA2397084A1 CA 2397084 A1 CA2397084 A1 CA 2397084A1 CA 2397084 CA2397084 CA 2397084 CA 2397084 A CA2397084 A CA 2397084A CA 2397084 A1 CA2397084 A1 CA 2397084A1
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CA
Canada
Prior art keywords
enhancement
sound
psychoacoustic model
intelligibilty
sie
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
CA 2397084
Other languages
French (fr)
Other versions
CA2397084C (en
Inventor
Todd Schneider
David Coode
Robert L. Brennan
Peter Olijnyk
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.)
Semiconductor Components Industries LLC
Original Assignee
Individual
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
Priority claimed from CA002354755A external-priority patent/CA2354755A1/en
Application filed by Individual filed Critical Individual
Priority to CA002397084A priority Critical patent/CA2397084C/en
Publication of CA2397084A1 publication Critical patent/CA2397084A1/en
Application granted granted Critical
Publication of CA2397084C publication Critical patent/CA2397084C/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
    • G10L21/0316—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

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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A sound intelligibility enhancement (SIE) system is disclosed. The SIE system uses a psychoacoustic model and preferably an oversampled filterbank wherein the level of a signal-of interest that falls below the environmental noise is selectively amplified as a function of the input level and frequency so that it is audible above the noise but never exceeds a predetermined maximum output level as a function of frequency. The SIE system can be combined with active noise cancellation.
CA002397084A 2001-08-07 2002-08-07 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank Expired - Lifetime CA2397084C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002397084A CA2397084C (en) 2001-08-07 2002-08-07 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,354,755 2001-08-07
CA002354755A CA2354755A1 (en) 2001-08-07 2001-08-07 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank
CA002397084A CA2397084C (en) 2001-08-07 2002-08-07 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank

Publications (2)

Publication Number Publication Date
CA2397084A1 true CA2397084A1 (en) 2003-02-07
CA2397084C CA2397084C (en) 2006-06-13

Family

ID=25682675

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002397084A Expired - Lifetime CA2397084C (en) 2001-08-07 2002-08-07 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank

Country Status (1)

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CA (1) CA2397084C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1638079B1 (en) * 2004-09-15 2018-12-05 Semiconductor Components Industries, LLC Method and system for active noise cancellation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1638079B1 (en) * 2004-09-15 2018-12-05 Semiconductor Components Industries, LLC Method and system for active noise cancellation

Also Published As

Publication number Publication date
CA2397084C (en) 2006-06-13

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Effective date: 20220808