GB769524A - Improvements in or relating to hearing aids - Google Patents

Improvements in or relating to hearing aids

Info

Publication number
GB769524A
GB769524A GB1064752A GB1064752A GB769524A GB 769524 A GB769524 A GB 769524A GB 1064752 A GB1064752 A GB 1064752A GB 1064752 A GB1064752 A GB 1064752A GB 769524 A GB769524 A GB 769524A
Authority
GB
United Kingdom
Prior art keywords
microphone
hearing
aid
hearing aids
relating
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
GB1064752A
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.)
R H DENT Ltd
Original Assignee
R H DENT Ltd
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 R H DENT Ltd filed Critical R H DENT Ltd
Priority to GB1064752A priority Critical patent/GB769524A/en
Publication of GB769524A publication Critical patent/GB769524A/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
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for microphones

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)
  • Telephone Set Structure (AREA)

Abstract

769,524. Hearing aids. DENT, Ltd., R. H., and HOYLES, L. April 21, 1953 [April 28, 1952], No. 10647/52. Class 40 (4). A pocket hearing- aid is provided with a microphone aperture in the top end face. The microphone may be inclined to the normally vertical faces. An aperture in the top one of the hearing-aid case 10 is covered by a grille 13. The microphone 12 is carried by a rubber mounting 14 provided with vertical holes connecting the microphone and the grille. The hearing-aid carries a clip 11.
GB1064752A 1952-04-28 1952-04-28 Improvements in or relating to hearing aids Expired GB769524A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1064752A GB769524A (en) 1952-04-28 1952-04-28 Improvements in or relating to hearing aids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1064752A GB769524A (en) 1952-04-28 1952-04-28 Improvements in or relating to hearing aids

Publications (1)

Publication Number Publication Date
GB769524A true GB769524A (en) 1957-03-06

Family

ID=9971698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1064752A Expired GB769524A (en) 1952-04-28 1952-04-28 Improvements in or relating to hearing aids

Country Status (1)

Country Link
GB (1) GB769524A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119918B (en) * 1958-12-18 1961-12-21 Danavox As Microphone suspension arrangement for hearing aids, especially for hearing glasses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119918B (en) * 1958-12-18 1961-12-21 Danavox As Microphone suspension arrangement for hearing aids, especially for hearing glasses

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