ES254241A1 - Improvements in or relating to apparatus for transmitting acoustic vibrations provided with a variable acoustic impedance - Google Patents

Improvements in or relating to apparatus for transmitting acoustic vibrations provided with a variable acoustic impedance

Info

Publication number
ES254241A1
ES254241A1 ES0254241A ES254241A ES254241A1 ES 254241 A1 ES254241 A1 ES 254241A1 ES 0254241 A ES0254241 A ES 0254241A ES 254241 A ES254241 A ES 254241A ES 254241 A1 ES254241 A1 ES 254241A1
Authority
ES
Spain
Prior art keywords
relating
vibrations provided
variable
transmitting
impedance
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
ES0254241A
Other languages
Spanish (es)
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
Publication of ES254241A1 publication Critical patent/ES254241A1/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)
  • Springs (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Telephone Set Structure (AREA)

Abstract

Apparatus for recording or reproducing acoustic vibrations provided with a variable impedance, characterized in that the impedance substantially comprises a coil spring whose coils are linked to each other in the unstretched condition of the spring. (Machine-translation by Google Translate, not legally binding)
ES0254241A 1958-12-19 1959-12-16 Improvements in or relating to apparatus for transmitting acoustic vibrations provided with a variable acoustic impedance Expired ES254241A1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES254241A1 true ES254241A1 (en) 1960-03-01

Family

ID=19751489

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0254241A Expired ES254241A1 (en) 1958-12-19 1959-12-16 Improvements in or relating to apparatus for transmitting 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
GB934632A (en) 1963-08-21
DE1115302B (en) 1961-10-19
FR1242763A (en) 1960-09-30
CH375541A (en) 1964-02-29
NL108508C (en)
NL234436A (en)

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