CA2397009C - Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage - Google Patents

Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage Download PDF

Info

Publication number
CA2397009C
CA2397009C CA002397009A CA2397009A CA2397009C CA 2397009 C CA2397009 C CA 2397009C CA 002397009 A CA002397009 A CA 002397009A CA 2397009 A CA2397009 A CA 2397009A CA 2397009 C CA2397009 C CA 2397009C
Authority
CA
Canada
Prior art keywords
processing system
output
signal
filter
directional
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
CA002397009A
Other languages
English (en)
Other versions
CA2397009A1 (fr
Inventor
Robert L. Brennan
Edward Y. Chau
Hamid Sheikhzadeh Nadjar
Todd Schneider
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.)
On Semiconductor Trading Ltd
Original Assignee
Emma Mixed Signal CV
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 CA002354858A external-priority patent/CA2354858A1/fr
Application filed by Emma Mixed Signal CV filed Critical Emma Mixed Signal CV
Priority to CA002397009A priority Critical patent/CA2397009C/fr
Priority to CA002594362A priority patent/CA2594362C/fr
Publication of CA2397009A1 publication Critical patent/CA2397009A1/fr
Application granted granted Critical
Publication of CA2397009C publication Critical patent/CA2397009C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/405—Arrangements for obtaining a desired directivity characteristic by combining a plurality of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/407—Circuits for combining signals of a plurality of transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • H04R25/507—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing implemented by neural network or fuzzy logic

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Complex Calculations (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Measurement Of Radiation (AREA)

Abstract

Système de traitement de signaux directionnels pour la formation de faisceaux des signaux d'information. Le système comprend un banc de filtres à suréchantillonnage, qui comporte un banc de filtres d'analyse pour la transformation de signaux d'information à domaine temporel en signaux de canal à domaine transformé, un banc de filtres de synthèse et un processeur de signaux. Le processeur de signaux traite les sorties du banc de filtres d'analyse pour la mise en forme de faisceaux des signaux d'informations. Le banc de filtres de synthèse transforme les sorties du processeur de signaux en un seul signal d'information à domaine temporel.
CA002397009A 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage Expired - Lifetime CA2397009C (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002397009A CA2397009C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage
CA002594362A CA2594362C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CA2,354,858 2001-08-08
CA002354858A CA2354858A1 (fr) 2001-08-08 2001-08-08 Traitement directionnel de signaux audio en sous-bande faisant appel a un banc de filtres surechantillonne
CA002397009A CA2397009C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002594362A Division CA2594362C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage

Publications (2)

Publication Number Publication Date
CA2397009A1 CA2397009A1 (fr) 2003-02-08
CA2397009C true CA2397009C (fr) 2007-10-23

Family

ID=25682678

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002397009A Expired - Lifetime CA2397009C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage
CA002594362A Expired - Lifetime CA2594362C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002594362A Expired - Lifetime CA2594362C (fr) 2001-08-08 2002-08-07 Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage

Country Status (1)

Country Link
CA (2) CA2397009C (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2452945C (fr) * 2003-09-23 2016-05-10 Mcmaster University Dispositif auditif binaural adaptatif
US9947323B2 (en) * 2016-04-01 2018-04-17 Intel Corporation Synthetic oversampling to enhance speaker identification or verification
EP3598777B1 (fr) * 2018-07-18 2023-10-11 Oticon A/s Dispositif auditif comprenant un estimateur de probabilité de présence de parole

Also Published As

Publication number Publication date
CA2594362C (fr) 2009-12-15
CA2397009A1 (fr) 2003-02-08
CA2594362A1 (fr) 2003-02-08

Similar Documents

Publication Publication Date Title
US7359520B2 (en) Directional audio signal processing using an oversampled filterbank
AU2002325101A1 (en) Directional audio signal processing using an oversampled filterbank
JP2004537944A6 (ja) オーバーサンプルされたフィルタバンクを用いる指向性オーディオ信号処理
US7110554B2 (en) Sub-band adaptive signal processing in an oversampled filterbank
US8184801B1 (en) Acoustic echo cancellation for time-varying microphone array beamsteering systems
Elko Microphone array systems for hands-free telecommunication
US9456275B2 (en) Cardioid beam with a desired null based acoustic devices, systems, and methods
US20060013412A1 (en) Method and system for reduction of noise in microphone signals
CA2652847C (fr) Extraction de signal aveugle
WO2002018969A1 (fr) Systeme et procede pour le traitement d'un signal emis a partir d'une source de signaux cible dans un environnement bruyant
CN108694956A (zh) 具有自适应子频带波束成形的听力设备及相关方法
Neo et al. Robust microphone arrays using subband adaptive filters
US20190090052A1 (en) Cost effective microphone array design for spatial filtering
CA2397009C (fr) Traitement directionnel de signaux audio au moyen d'un banc de filtres a surechantillonnage
Leese Microphone arrays
Van Compernolle et al. Beamforming with microphone arrays
Low et al. Robust microphone array using subband adaptive beamformer and spectral subtraction
Chau et al. A subband beamformer on an ultra low-power miniature DSP platform
Liu et al. A novel method for partially adaptive broadband beamforming
CA2397080C (fr) Traitement adaptatif de signaux en sous-bande dans un banc de filtres surechantillonne
ULTRA et al. email address:{echau, hsheikh, rbrennan, tschneid}@ dspfactory. com
Zhang et al. Adaptive null-forming algorithm with auditory sub-bands
Dugger et al. An analog adaptive beamforming circuit for audio noise reduction
Doclo et al. Design of broadband speech beamformers robust against errors in the microphone array characteristics
AU2004310722A1 (en) Method and apparatus for producing adaptive directional signals

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20220808