CA2069737A1 - Hearing Aid - Google Patents

Hearing Aid

Info

Publication number
CA2069737A1
CA2069737A1 CA 2069737 CA2069737A CA2069737A1 CA 2069737 A1 CA2069737 A1 CA 2069737A1 CA 2069737 CA2069737 CA 2069737 CA 2069737 A CA2069737 A CA 2069737A CA 2069737 A1 CA2069737 A1 CA 2069737A1
Authority
CA
Canada
Prior art keywords
hearing aid
signal processing
digital signal
main section
transmission channel
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 2069737
Other languages
French (fr)
Other versions
CA2069737C (en
Inventor
Jarle Svean
Asbjorn Krokstad
Tor Audun Ramstad
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.)
HNA AS
Original Assignee
Jarle Svean
Asbjorn Krokstad
Tor Audun Ramstad
Hna A/S
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 Jarle Svean, Asbjorn Krokstad, Tor Audun Ramstad, Hna A/S filed Critical Jarle Svean
Publication of CA2069737A1 publication Critical patent/CA2069737A1/en
Application granted granted Critical
Publication of CA2069737C publication Critical patent/CA2069737C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/453Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505Customised settings for obtaining desired overall acoustical characteristics using digital signal processing

Abstract

Programmable hybrid hearing aid with digital signal processing comprising a main section (1) which can be inserted in the meatus (6). The main section (1) comprises an open connection between the ear opening and an inner portion of the meatus (6), providing an acoustic transmission channel with low-pass characteristic and resonant amplification. The main section further comprises an electroacoustic transmission channel based on digital signal processing and a signal processor (DSP) and with possibility for suppressing a possible acoustic signal feedback through the acoustic transmission channel. A variant of the hearing aid is provided with a microphone (M1) and the feedback signal is suppressed by digital filtering. Another variant of the hearing aid employs two microphones (M1, M2), and the feedback signal may then be suppressed by phasing out before the digital signal processing, while the digital signal processing also comprises cancellation of the feedback signal in case of high gain. A number of response functions are stored in a memory (RAM2) in a control unit and is freely chosen by the user in regard of adaption to hearing function and acoustic environment. All the electronics of the electroacoustic channel in the hearing aid is implemented as a monolithic integrated circuit (3) in CMOS technology.
CA002069737A 1989-11-30 1990-11-29 Hearing aid Expired - Fee Related CA2069737C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO894806A NO169689C (en) 1989-11-30 1989-11-30 PROGRAMMABLE HYBRID HEARING DEVICE WITH DIGITAL SIGNAL TREATMENT AND PROCEDURE FOR DETECTION AND SIGNAL TREATMENT AT THE SAME.
NO894806 1989-11-30
PCT/NO1990/000178 WO1991008654A1 (en) 1989-11-30 1990-11-29 Hearing aid

Publications (2)

Publication Number Publication Date
CA2069737A1 true CA2069737A1 (en) 1991-05-31
CA2069737C CA2069737C (en) 1999-09-14

Family

ID=19892639

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002069737A Expired - Fee Related CA2069737C (en) 1989-11-30 1990-11-29 Hearing aid

Country Status (13)

Country Link
US (1) US5276739A (en)
EP (1) EP0502073B1 (en)
JP (1) JPH05504029A (en)
AT (1) ATE111670T1 (en)
AU (1) AU654266B2 (en)
CA (1) CA2069737C (en)
DE (1) DE69012582T2 (en)
DK (1) DK0502073T3 (en)
ES (1) ES2060345T3 (en)
FI (1) FI922408A (en)
HU (1) HU9201417D0 (en)
NO (1) NO169689C (en)
WO (1) WO1991008654A1 (en)

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Also Published As

Publication number Publication date
HUT63726A (en) 1993-09-28
FI922408A0 (en) 1992-05-26
DK0502073T3 (en) 1995-02-20
AU6880591A (en) 1991-06-26
EP0502073B1 (en) 1994-09-14
NO894806D0 (en) 1989-11-30
DE69012582T2 (en) 1995-04-20
HU9201417D0 (en) 1993-09-28
ATE111670T1 (en) 1994-09-15
AU654266B2 (en) 1994-11-03
FI922408A (en) 1992-05-26
ES2060345T3 (en) 1994-11-16
JPH05504029A (en) 1993-06-24
DE69012582D1 (en) 1994-10-20
NO169689C (en) 1992-07-22
NO169689B (en) 1992-04-13
CA2069737C (en) 1999-09-14
US5276739A (en) 1994-01-04
WO1991008654A1 (en) 1991-06-13
NO894806L (en) 1991-05-31
EP0502073A1 (en) 1992-09-09

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