GB574611A - Improvements in or relating to directional microphones - Google Patents

Improvements in or relating to directional microphones

Info

Publication number
GB574611A
GB574611A GB681/44A GB68144A GB574611A GB 574611 A GB574611 A GB 574611A GB 681/44 A GB681/44 A GB 681/44A GB 68144 A GB68144 A GB 68144A GB 574611 A GB574611 A GB 574611A
Authority
GB
United Kingdom
Prior art keywords
apertures
diaphragm
silk
covered
jan
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
GB681/44A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB574611A publication Critical patent/GB574611A/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
    • H04R1/32—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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB681/44A 1943-01-16 1944-01-13 Improvements in or relating to directional microphones Expired GB574611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US472575A US2401328A (en) 1943-01-16 1943-01-16 Sound translating device

Publications (1)

Publication Number Publication Date
GB574611A true GB574611A (en) 1946-01-14

Family

ID=23876067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB681/44A Expired GB574611A (en) 1943-01-16 1944-01-13 Improvements in or relating to directional microphones

Country Status (5)

Country Link
US (1) US2401328A (xx)
BE (1) BE467509A (xx)
FR (1) FR939369A (xx)
GB (1) GB574611A (xx)
NL (1) NL72895C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945768C (de) * 1949-06-05 1956-07-19 Siemens Ag Aus mehreren in einer Reihe in eine gemeinsame lattenartige Schallwand eingebauten Lautsprechern bestehende Lautsprecher-Gruppenanordnung

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2546343A (en) * 1946-12-31 1951-03-27 Univ Loudspeakers Inc Driver unit for loud-speakers
US2532413A (en) * 1946-12-31 1950-12-05 Univ Loudspeakers Inc Magnet structure for loud-speakers
US2515031A (en) * 1948-03-31 1950-07-11 Bell Telephone Labor Inc Microphone having controllable directional response pattern
US2587684A (en) * 1948-10-13 1952-03-04 Shure Bros Directional microphone
US2695370A (en) * 1950-07-04 1954-11-23 Hartford Nat Bank & Trust Co Permanent magnet for dynamoelectric machines
NL102054C (xx) * 1954-01-11
US2865464A (en) * 1954-08-07 1958-12-23 Gorike Rudolf Unidirectional dynamic microphone
DE1073546B (de) * 1955-05-26 1960-01-21 Rudolf Gorike Wien Dr Richtmikrophon mit geringer Erschutterungs- und Windempfind lichkeit
US3061690A (en) * 1958-09-15 1962-10-30 Turner Company Acoustically compensated microphone with adjustable acoustic resistance
NL147916B (nl) * 1966-10-22 1975-11-17 Philips Nv Elektrodynamische microfoon met cardioidvormige richtkarakteristiek.
US3342285A (en) * 1966-12-19 1967-09-19 Standard Systems Comm Corp Combination pillow speaker and control unit
US3679022A (en) * 1969-07-04 1972-07-25 Nippon Musical Instruments Mfg Speaker box
DE19710967C1 (de) * 1997-03-17 1998-10-22 Karl Heinz Koeppen Breitbandlautsprecher
USD395893S (en) 1997-05-30 1998-07-07 Telex Communications, Inc. Microphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE945768C (de) * 1949-06-05 1956-07-19 Siemens Ag Aus mehreren in einer Reihe in eine gemeinsame lattenartige Schallwand eingebauten Lautsprechern bestehende Lautsprecher-Gruppenanordnung

Also Published As

Publication number Publication date
BE467509A (xx)
NL72895C (xx)
FR939369A (fr) 1948-11-12
US2401328A (en) 1946-06-04

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