FR780952A - Improvements to electroacoustic transformation devices - Google Patents

Improvements to electroacoustic transformation devices

Info

Publication number
FR780952A
FR780952A FR780952DA FR780952A FR 780952 A FR780952 A FR 780952A FR 780952D A FR780952D A FR 780952DA FR 780952 A FR780952 A FR 780952A
Authority
FR
France
Prior art keywords
transformation devices
electroacoustic transformation
electroacoustic
devices
transformation
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
Other languages
French (fr)
Inventor
Peter William Willans
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 filed Critical
Application granted granted Critical
Publication of FR780952A publication Critical patent/FR780952A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR780952D 1933-11-08 1934-11-08 Improvements to electroacoustic transformation devices Expired FR780952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3103033A GB428144A (en) 1933-11-08 1933-11-08 Improvements in or relating to microphones or the like

Publications (1)

Publication Number Publication Date
FR780952A true FR780952A (en) 1935-05-07

Family

ID=10316885

Family Applications (1)

Application Number Title Priority Date Filing Date
FR780952D Expired FR780952A (en) 1933-11-08 1934-11-08 Improvements to electroacoustic transformation devices

Country Status (2)

Country Link
FR (1) FR780952A (en)
GB (1) GB428144A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938968C (en) * 1951-01-03 1956-02-09 Konrad Dr Tamm Sound receiver with a predefinable time delay

Also Published As

Publication number Publication date
GB428144A (en) 1935-05-08

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