CA2397084C - Amelioration de l'intelligibilite sonore a l'aide d'un modele psychoacoustique et d'un signal de banc de filtres surechantillonne - Google Patents

Amelioration de l'intelligibilite sonore a l'aide d'un modele psychoacoustique et d'un signal de banc de filtres surechantillonne Download PDF

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Publication number
CA2397084C
CA2397084C CA002397084A CA2397084A CA2397084C CA 2397084 C CA2397084 C CA 2397084C CA 002397084 A CA002397084 A CA 002397084A CA 2397084 A CA2397084 A CA 2397084A CA 2397084 C CA2397084 C CA 2397084C
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Canada
Prior art keywords
signal
noise
sub
interest
processor
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
CA002397084A
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English (en)
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CA2397084A1 (fr
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
Emma Mixed Signal CV
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Filing date
Publication date
Priority claimed from CA002354755A external-priority patent/CA2354755A1/fr
Application filed by Emma Mixed Signal CV filed Critical Emma Mixed Signal CV
Priority to CA002397084A priority Critical patent/CA2397084C/fr
Publication of CA2397084A1 publication Critical patent/CA2397084A1/fr
Application granted granted Critical
Publication of CA2397084C publication Critical patent/CA2397084C/fr
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

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  • 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

Un système d'amélioration de la netteté phonique est fourni. Ce système utilise un modèle psychoacoustique et de préférence un banc de filtres suréchantillonné où le signal digne d'intérêt qui se trouve en dessous du bruit ambiant est sélectivement amplifié en tant que fonction du niveau et de la fréquence d'entrée afin d'être audible par-dessus le bruit ambiant sans dépasser un niveau de sortie maximal prédéterminé en tant que fonction de fréquence. Le système d'amélioration de la netteté phonique peut être associé avec la suppression active du bruit.
CA002397084A 2001-08-07 2002-08-07 Amelioration de l'intelligibilite sonore a l'aide d'un modele psychoacoustique et d'un signal de banc de filtres surechantillonne Expired - Lifetime CA2397084C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002397084A CA2397084C (fr) 2001-08-07 2002-08-07 Amelioration de l'intelligibilite sonore a l'aide d'un modele psychoacoustique et d'un signal de banc de filtres surechantillonne

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,354,755 2001-08-07
CA002354755A CA2354755A1 (fr) 2001-08-07 2001-08-07 Amelioration de l'intelligibilite des sons a l'aide d'un modele psychoacoustique et d'un banc de filtres surechantillonne
CA002397084A CA2397084C (fr) 2001-08-07 2002-08-07 Amelioration de l'intelligibilite sonore a l'aide d'un modele psychoacoustique et d'un signal de banc de filtres surechantillonne

Publications (2)

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

Family

ID=25682675

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002397084A Expired - Lifetime CA2397084C (fr) 2001-08-07 2002-08-07 Amelioration de l'intelligibilite sonore a l'aide d'un modele psychoacoustique et d'un signal de banc de filtres surechantillonne

Country Status (1)

Country Link
CA (1) CA2397084C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1638079B8 (fr) * 2004-09-15 2019-01-23 GN Hearing A/S Procédé et système pour la suppression active du bruit

Also Published As

Publication number Publication date
CA2397084A1 (fr) 2003-02-07

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Effective date: 20220808