FR1061480A - Système de transformation acoustique - Google Patents

Système de transformation acoustique

Info

Publication number
FR1061480A
FR1061480A FR1061480DA FR1061480A FR 1061480 A FR1061480 A FR 1061480A FR 1061480D A FR1061480D A FR 1061480DA FR 1061480 A FR1061480 A FR 1061480A
Authority
FR
France
Prior art keywords
transformation system
acoustic transformation
acoustic
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
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.)
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 FR1061480A publication Critical patent/FR1061480A/fr
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 
    • H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for microphones

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)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
FR1061480D 1951-08-17 1952-08-14 Système de transformation acoustique Expired FR1061480A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL304777X 1951-08-17

Publications (1)

Publication Number Publication Date
FR1061480A true FR1061480A (fr) 1954-04-13

Family

ID=19783449

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1061480D Expired FR1061480A (fr) 1951-08-17 1952-08-14 Système de transformation acoustique

Country Status (5)

Country Link
BE (1) BE513534A (fr)
CH (1) CH304777A (fr)
DE (1) DE926498C (fr)
FR (1) FR1061480A (fr)
GB (1) GB709355A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101319175B1 (ko) * 2007-02-28 2013-10-16 가부시기가이샤 템코 재팬 진동 픽업형 마이크로폰

Also Published As

Publication number Publication date
BE513534A (fr)
GB709355A (en) 1954-05-19
DE926498C (de) 1955-04-18
CH304777A (de) 1955-01-31

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