FR1242763A - Device for recording or reproducing acoustic vibrations, provided with a variable acoustic impedance - Google Patents

Device for recording or reproducing acoustic vibrations, provided with a variable acoustic impedance

Info

Publication number
FR1242763A
FR1242763A FR813330A FR813330A FR1242763A FR 1242763 A FR1242763 A FR 1242763A FR 813330 A FR813330 A FR 813330A FR 813330 A FR813330 A FR 813330A FR 1242763 A FR1242763 A FR 1242763A
Authority
FR
France
Prior art keywords
recording
reproducing
variable
acoustic
vibrations
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
FR813330A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR1242763A publication Critical patent/FR1242763A/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
    • H04R1/22—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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Telephone Set Structure (AREA)
  • Springs (AREA)
FR813330A 1958-12-19 1959-12-17 Device for recording or reproducing acoustic vibrations, provided with a variable acoustic impedance Expired FR1242763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL234436 1958-12-19

Publications (1)

Publication Number Publication Date
FR1242763A true FR1242763A (en) 1960-09-30

Family

ID=19751489

Family Applications (1)

Application Number Title Priority Date Filing Date
FR813330A Expired FR1242763A (en) 1958-12-19 1959-12-17 Device for recording or reproducing acoustic vibrations, provided with a variable acoustic impedance

Country Status (6)

Country Link
CH (1) CH375541A (en)
DE (1) DE1115302B (en)
ES (1) ES254241A1 (en)
FR (1) FR1242763A (en)
GB (1) GB934632A (en)
NL (2) NL234436A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187635A (en) * 1978-04-03 1980-02-12 Deissler Robert J Method and apparatus for sound production

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2263408A (en) * 1936-04-11 1941-11-18 Lakhovsky George Means for improving the sound emitted by microphones, loudspeakers, and the like
DE1073546B (en) * 1955-05-26 1960-01-21 Rudolf Gorike Wien Dr Directional microphone with low vibration and wind sensitivity

Also Published As

Publication number Publication date
DE1115302B (en) 1961-10-19
NL108508C (en)
NL234436A (en)
GB934632A (en) 1963-08-21
ES254241A1 (en) 1960-03-01
CH375541A (en) 1964-02-29

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