GB705560A - Improvements in or relating to contact microphones - Google Patents

Improvements in or relating to contact microphones

Info

Publication number
GB705560A
GB705560A GB25974/52A GB2597452A GB705560A GB 705560 A GB705560 A GB 705560A GB 25974/52 A GB25974/52 A GB 25974/52A GB 2597452 A GB2597452 A GB 2597452A GB 705560 A GB705560 A GB 705560A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
partition
oct
outer membrane
air chambers
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
GB25974/52A
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.)
Svenska AB Gasaccumulator
Original Assignee
Svenska AB Gasaccumulator
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 Svenska AB Gasaccumulator filed Critical Svenska AB Gasaccumulator
Publication of GB705560A publication Critical patent/GB705560A/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
    • H04R1/14—Throat mountings for microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

705,560. Throat-operated and like transmitters. SVENSKA AKTIEBOLAGET GASACCUMULATOR. Oct. 16, 1952 [Oct. 17, 1951],No. 25974/52. Class 40 (4) In a contact microphone having an outer membrane 9 and an inner diaphragm 4 forming part of an electro-acoustic transducer system, the diaphragm 4 and the membrane 9 are connected by an acoustic network comprising two air chambers 16, 17 connected by apertures 15 which are so proportioned with respect to the volumes of the air chambers that the low frequencies are suppressed. The inner diaphragm 4 is made resonant within the upper part of the speech band. In the electromagnetic instrument shown the chambers 17 and 16 are bounded by the diaphragm 4 and a partition 8, and by the partition 8 and the outer membrane 9, respectively. The latter chamber is formed by an annular depression in the partition 8 but an alternative embodiment having a central circular chamber is referred to. The invention is stated to be suitable for carbon granule and piezo-electric instruments, and an arrangement of the microphone cable reinforced with a resilient insert to form a neck-band is also described.
GB25974/52A 1951-10-17 1952-10-16 Improvements in or relating to contact microphones Expired GB705560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE705560X 1951-10-17

Publications (1)

Publication Number Publication Date
GB705560A true GB705560A (en) 1954-03-17

Family

ID=20315583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25974/52A Expired GB705560A (en) 1951-10-17 1952-10-16 Improvements in or relating to contact microphones

Country Status (2)

Country Link
DE (1) DE968712C (en)
GB (1) GB705560A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204272B (en) * 1960-02-24 1965-11-04 Louis Ernest Bonnin Language set
DE1256704B (en) * 1962-10-05 1967-12-21 Holmberg & Co Housing for larynx microphones made of thermoplastic plastic
GB1067273A (en) * 1962-10-15 1967-05-03 Matsushita Electric Ind Co Ltd Electroacoustic transducers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB494293A (en) * 1937-04-19 1938-10-19 Standard Telphones And Cables Improvements in or relating to telephone transmitters

Also Published As

Publication number Publication date
DE968712C (en) 1958-03-20

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