CH474199A - Hearing aid for the hard of hearing to be worn on the head - Google Patents

Hearing aid for the hard of hearing to be worn on the head

Info

Publication number
CH474199A
CH474199A CH691967A CH691967A CH474199A CH 474199 A CH474199 A CH 474199A CH 691967 A CH691967 A CH 691967A CH 691967 A CH691967 A CH 691967A CH 474199 A CH474199 A CH 474199A
Authority
CH
Switzerland
Prior art keywords
hearing
worn
hard
head
hearing aid
Prior art date
Application number
CH691967A
Other languages
German (de)
Inventor
Hassler Otto
Original Assignee
Willco Gmbh
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 Willco Gmbh filed Critical Willco Gmbh
Publication of CH474199A publication Critical patent/CH474199A/en

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
    • H04R1/38—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 in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

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)
  • Headphones And Earphones (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Stereophonic Arrangements (AREA)
CH691967A 1966-05-20 1967-05-17 Hearing aid for the hard of hearing to be worn on the head CH474199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0041620 1966-05-20

Publications (1)

Publication Number Publication Date
CH474199A true CH474199A (en) 1969-06-15

Family

ID=7602905

Family Applications (1)

Application Number Title Priority Date Filing Date
CH691967A CH474199A (en) 1966-05-20 1967-05-17 Hearing aid for the hard of hearing to be worn on the head

Country Status (6)

Country Link
BE (1) BE698708A (en)
CH (1) CH474199A (en)
DE (1) DE1487565B2 (en)
ES (1) ES340703A1 (en)
GB (1) GB1181259A (en)
NL (1) NL153060B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770911A (en) * 1972-07-21 1973-11-06 Industrial Research Prod Inc Hearing aid system
DE8908003U1 (en) * 1989-06-30 1989-08-10 Robert Bosch Gmbh, 7000 Stuttgart Housing for a hearing aid to be worn behind the ear
DE10260304B3 (en) * 2002-12-20 2004-07-08 Siemens Audiologische Technik Gmbh Hearing aid system with side-specific hearing aid devices that can be worn behind the ears

Also Published As

Publication number Publication date
NL153060B (en) 1977-04-15
NL6706947A (en) 1967-11-21
GB1181259A (en) 1970-02-11
BE698708A (en) 1967-11-03
ES340703A1 (en) 1968-06-16
DE1487565A1 (en) 1969-02-06
DE1487565B2 (en) 1972-10-12

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Legal Events

Date Code Title Description
PL Patent ceased