BE562680A - - Google Patents

Info

Publication number
BE562680A
BE562680A BE562680DA BE562680A BE 562680 A BE562680 A BE 562680A BE 562680D A BE562680D A BE 562680DA BE 562680 A BE562680 A BE 562680A
Authority
BE
Belgium
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 BE562680A publication Critical patent/BE562680A/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
    • H04R1/22—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)
  • Transducers For Ultrasonic Waves (AREA)
BE562680D 1956-11-26 BE562680A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3603156A GB819146A (en) 1956-11-26 1956-11-26 Improvements in or relating to acoustic impedance devices

Publications (1)

Publication Number Publication Date
BE562680A true BE562680A (zh)

Family

ID=10384198

Family Applications (1)

Application Number Title Priority Date Filing Date
BE562680D BE562680A (zh) 1956-11-26

Country Status (2)

Country Link
BE (1) BE562680A (zh)
GB (1) GB819146A (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007834A1 (de) * 1980-02-29 1981-09-17 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer wandler
DK148550C (da) * 1981-12-10 1986-04-21 Standard Electric Kirk Elektrodynamisk transducer med bevaegelig spole
FR2542550B1 (fr) * 1983-03-07 1986-11-14 Thomson Csf Transducteur electroacoustique a correction acoustique integree
EP0232096B1 (en) * 1986-01-23 1991-12-27 Siemens Plessey Electronic Systems Limited Acoustic transducers
GB9707372D0 (en) * 1997-04-11 1997-05-28 Bpb Plc Cementitiuos tile

Also Published As

Publication number Publication date
GB819146A (en) 1959-08-26

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