GB1495292A - Acoustic transmission systems for electro-acoustic transducers - Google Patents

Acoustic transmission systems for electro-acoustic transducers

Info

Publication number
GB1495292A
GB1495292A GB5088274A GB5088274A GB1495292A GB 1495292 A GB1495292 A GB 1495292A GB 5088274 A GB5088274 A GB 5088274A GB 5088274 A GB5088274 A GB 5088274A GB 1495292 A GB1495292 A GB 1495292A
Authority
GB
United Kingdom
Prior art keywords
duct
ear
receiver
providing
deaf
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
GB5088274A
Other languages
English (en)
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.)
Industrial Research Products Inc
IND RES PROD Inc
Original Assignee
Industrial Research Products Inc
IND RES PROD Inc
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 Industrial Research Products Inc, IND RES PROD Inc filed Critical Industrial Research Products Inc
Publication of GB1495292A publication Critical patent/GB1495292A/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
    • H04R25/48—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using constructional means for obtaining a desired frequency response

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
GB5088274A 1974-02-20 1974-11-25 Acoustic transmission systems for electro-acoustic transducers Expired GB1495292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44403674A 1974-02-20 1974-02-20

Publications (1)

Publication Number Publication Date
GB1495292A true GB1495292A (en) 1977-12-14

Family

ID=23763226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5088274A Expired GB1495292A (en) 1974-02-20 1974-11-25 Acoustic transmission systems for electro-acoustic transducers

Country Status (2)

Country Link
DK (1) DK157646C (enExample)
GB (1) GB1495292A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162342A (en) * 1984-07-25 1986-01-29 Edward Loughran Alarm time-pieces
GB2162403A (en) * 1984-07-18 1986-01-29 Akg Akustische Kino Geraete A headset

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162403A (en) * 1984-07-18 1986-01-29 Akg Akustische Kino Geraete A headset
GB2162342A (en) * 1984-07-25 1986-01-29 Edward Loughran Alarm time-pieces

Also Published As

Publication number Publication date
DK157646B (da) 1990-01-29
DE2506921B2 (de) 1977-06-23
DK157646C (da) 1990-07-16
DK624474A (enExample) 1975-10-20
DE2506921A1 (de) 1975-08-28

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19941124