NL72895C - - Google Patents

Info

Publication number
NL72895C
NL72895C NL72895DA NL72895C NL 72895 C NL72895 C NL 72895C NL 72895D A NL72895D A NL 72895DA NL 72895 C NL72895 C NL 72895C
Authority
NL
Netherlands
Application number
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.)
Publication of NL72895C publication Critical patent/NL72895C/xx

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)
NL72895D 1943-01-16 NL72895C (xx)

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
NL72895C true NL72895C (xx)

Family

ID=23876067

Family Applications (1)

Application Number Title Priority Date Filing Date
NL72895D NL72895C (xx) 1943-01-16

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)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532413A (en) * 1946-12-31 1950-12-05 Univ Loudspeakers Inc Magnet structure for loud-speakers
US2546343A (en) * 1946-12-31 1951-03-27 Univ Loudspeakers Inc Driver unit 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
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
US2695370A (en) * 1950-07-04 1954-11-23 Hartford Nat Bank & Trust Co Permanent magnet for dynamoelectric machines
NL190970A (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

Also Published As

Publication number Publication date
US2401328A (en) 1946-06-04
FR939369A (fr) 1948-11-12
GB574611A (en) 1946-01-14
BE467509A (xx)

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