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GB1296137A - - Google Patents

Info

Publication number
GB1296137A
GB1296137A GB1296137DA GB1296137A GB 1296137 A GB1296137 A GB 1296137A GB 1296137D A GB1296137D A GB 1296137DA GB 1296137 A GB1296137 A GB 1296137A
Authority
GB
United Kingdom
Prior art keywords
receiver
microphone
pressure
gradient
hearing aid
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
Application number
Other languages
English (en)
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 filed Critical
Publication of GB1296137A publication Critical patent/GB1296137A/en
Expired 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
    • 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
    • H04R25/402—Arrangements for obtaining a desired directivity characteristic using contructional means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers 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
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/456—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback mechanically

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB1296137D 1969-07-29 1970-04-06 Expired GB1296137A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691938435 DE1938435B2 (de) 1969-07-29 1969-07-29 Hörgerät

Publications (1)

Publication Number Publication Date
GB1296137A true GB1296137A (de) 1972-11-15

Family

ID=5741216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296137D Expired GB1296137A (de) 1969-07-29 1970-04-06

Country Status (6)

Country Link
CH (1) CH532876A (de)
DE (1) DE1938435B2 (de)
FR (1) FR2053232B1 (de)
GB (1) GB1296137A (de)
NL (1) NL7004267A (de)
SE (1) SE370484B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7103191B1 (en) 1993-04-13 2006-09-05 Etymotic Research, Inc. Hearing aid having second order directional response

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407815B (de) * 1990-07-13 2001-06-25 Viennatone Gmbh Hörgerät
CH681411A5 (de) * 1991-02-20 1993-03-15 Phonak Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7103191B1 (en) 1993-04-13 2006-09-05 Etymotic Research, Inc. Hearing aid having second order directional response

Also Published As

Publication number Publication date
DE1938435A1 (de) 1971-02-11
FR2053232A1 (de) 1971-04-16
DE1938435B2 (de) 1974-05-02
SE370484B (de) 1974-10-14
CH532876A (de) 1973-01-15
FR2053232B1 (de) 1976-09-24
NL7004267A (de) 1971-02-02

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
PS Patent sealed
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed