GB869234A - Transducer and vibratory diaphragm - Google Patents

Transducer and vibratory diaphragm

Info

Publication number
GB869234A
GB869234A GB29214/57A GB2921457A GB869234A GB 869234 A GB869234 A GB 869234A GB 29214/57 A GB29214/57 A GB 29214/57A GB 2921457 A GB2921457 A GB 2921457A GB 869234 A GB869234 A GB 869234A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
transducer
tube
deaf
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
GB29214/57A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB869234A publication Critical patent/GB869234A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

869,234. Microphones; diaphragms. KNOWLES, H. S. Sept. 17, 1957 [Oct. 11, 1956], No. 29214/57. Class 40 (4). The sensitivity of a microphone, particularly for use in a deaf-aid, is improved by connecting cavities on the two sides of the diaphragm by a tube of the type described in Specification 382,268. A rectangular capsule, Figs. 1 and 2, for use in a deaf-aid, has a restricted aperture 59 for the ingress of sound to a diaphragm 46 connected by a tube 72 to an armature 62 of a transducer. The tube 72 also, Fig. 4, connects the cavities on the two sides of the diaphragm, and may be made integral with the diaphragm 46. A number of short tubes 84, 86, 88, 90, Fig. 7, may be provided in the diaphragm and substantially normal thereto, or tubes may be provided in the plane of the diaphragm, Figs. 9, 11, 12.
GB29214/57A 1956-10-11 1957-09-17 Transducer and vibratory diaphragm Expired GB869234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US615406A US2966558A (en) 1956-10-11 1956-10-11 Transducer and vibratory diaphragm

Publications (1)

Publication Number Publication Date
GB869234A true GB869234A (en) 1961-05-31

Family

ID=24465236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29214/57A Expired GB869234A (en) 1956-10-11 1957-09-17 Transducer and vibratory diaphragm

Country Status (5)

Country Link
US (1) US2966558A (en)
DE (1) DE1081050B (en)
DK (1) DK103946C (en)
GB (1) GB869234A (en)
NL (1) NL111663C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013127A (en) * 1959-05-27 1961-12-12 Zenith Radio Corp Sound-transducing apparatus
US3076062A (en) * 1959-10-30 1963-01-29 Dyna Magnetic Devices Inc Hearing-aid sound transducer
NL282929A (en) * 1961-09-06
US3251954A (en) * 1961-10-27 1966-05-17 Industrial Res Prod Inc Electroacoustic transducer
US3154172A (en) * 1962-07-19 1964-10-27 Tibbetts Industries Diaphragm and impedance means
DK136200B (en) * 1975-12-29 1977-08-29 Finn Gunnersen Hearing aid with acoustic impedance device.
DK148550C (en) * 1981-12-10 1986-04-21 Standard Electric Kirk ELECTRODYNAMIC TRANSDUCER WITH MOBILE COIL
US7751579B2 (en) * 2003-06-13 2010-07-06 Etymotic Research, Inc. Acoustically transparent debris barrier for audio transducers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1366607A (en) * 1921-01-25 Telephone-receiver
US1869178A (en) * 1930-08-15 1932-07-26 Bell Telephone Labor Inc Sound translating device
US1847702A (en) * 1931-05-02 1932-03-01 Bell Telephone Labor Inc Sound translating device
US2022060A (en) * 1934-08-29 1935-11-26 Bell Telephone Labor Inc Acoustic device
US2400281A (en) * 1940-10-31 1946-05-14 Rca Corp Electromechanical signal translating apparatus
US2342334A (en) * 1942-07-11 1944-02-22 Maico Company Inc Variable baffle for translating devices
BE468390A (en) * 1943-12-28
US2503857A (en) * 1945-11-07 1950-04-11 Us Instr Corp Polarized electromagnet for telephone instruments
US2789161A (en) * 1951-04-05 1957-04-16 Joseph B Brennan Loud-speakers

Also Published As

Publication number Publication date
DE1081050B (en) 1960-05-05
DK103946C (en) 1966-03-14
NL111663C (en)
US2966558A (en) 1960-12-27

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