EP0140901B1 - Mikrophon mit veränderbarer öffnung - Google Patents

Mikrophon mit veränderbarer öffnung Download PDF

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Publication number
EP0140901B1
EP0140901B1 EP19840901056 EP84901056A EP0140901B1 EP 0140901 B1 EP0140901 B1 EP 0140901B1 EP 19840901056 EP19840901056 EP 19840901056 EP 84901056 A EP84901056 A EP 84901056A EP 0140901 B1 EP0140901 B1 EP 0140901B1
Authority
EP
European Patent Office
Prior art keywords
microphone
reception
resonant cavity
variable aperture
resonant
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
EP19840901056
Other languages
English (en)
French (fr)
Other versions
EP0140901A1 (de
Inventor
Antoni Alberto Grigioni
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84901056T priority Critical patent/ATE39317T1/de
Publication of EP0140901A1 publication Critical patent/EP0140901A1/de
Application granted granted Critical
Publication of EP0140901B1 publication Critical patent/EP0140901B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for microphones

Definitions

  • the present invention relates to an apparatus for the reception of sound comprising a directional microphone.
  • These devices are normally composed of a microphone placed at the bottom of a resonant cavity, the length of which determines the opening of the sound reception field of the microphone.
  • this problem is solved by using an apparatus for receiving sound composed of a resonant cavity (4) containing a microphone (1.a) characterized in that the microphone is movable (3.a, 3.b ) inside the resonant cavity in the longitudinal direction so as to vary the directivity of reception of the apparatus from spherical to hypercardioid.
  • This device consists of a microphone capsule (1.a) placed in a housing which is both suspended in a resonant cavity. (4) with magnetic fields (Fig. 2).
  • This suspension prevents each friction between the microphone housing and the resonant cavity, avoiding unwanted noise

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)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Near-Field Transmission Systems (AREA)

Claims (2)

1. Gerät für den Tonempfang aus einem Mikrophon (1.a) enthaltend gedämpfte bzw. geschlitzte Röhre (4) zusammengestellt, wo das Mikrophon die Eigenschaft hat, im Innern der Röhre, verschiebbar zu sein, somit ist es möglich den Empfangswinkel des Gerätes zwischen Kugel-und Nierencharakteristik zu ändern.
2. Gerät nach Anspruch 1, dadurch gekennzeichnet, daß das Mikrophon im Innern der gedämpften bzw. geschlitzten Röhre mit magnetischen Feldern aufgehängt ist, wobei die Reibung mit den Seitenwänden der Röhre verhindert ist.
EP19840901056 1983-03-17 1984-03-19 Mikrophon mit veränderbarer öffnung Expired EP0140901B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84901056T ATE39317T1 (de) 1983-03-17 1984-03-19 Mikrophon mit veraenderbarer oeffnung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1462/83 1983-03-17
CH146283A CH646829A5 (it) 1983-03-17 1983-03-17 Apparecchio per la ricezione del suono a apertura variabile.

Publications (2)

Publication Number Publication Date
EP0140901A1 EP0140901A1 (de) 1985-05-15
EP0140901B1 true EP0140901B1 (de) 1988-12-14

Family

ID=4211040

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84810128A Pending EP0134751A1 (de) 1983-03-17 1984-03-19 Mikrophon mit veränderbarer Öffnung
EP19840901056 Expired EP0140901B1 (de) 1983-03-17 1984-03-19 Mikrophon mit veränderbarer öffnung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP84810128A Pending EP0134751A1 (de) 1983-03-17 1984-03-19 Mikrophon mit veränderbarer Öffnung

Country Status (4)

Country Link
EP (2) EP0134751A1 (de)
CH (1) CH646829A5 (de)
DE (1) DE3475688D1 (de)
WO (1) WO1984003812A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3923740C1 (de) * 1989-07-18 1990-12-06 Messerschmitt-Boelkow-Blohm Gmbh, 8012 Ottobrunn, De

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE105942C (de) *
CH196704A (de) * 1937-05-26 1938-03-31 Hugo Meier Horchgerät zum Ermitteln von Geräuschen, insbesondere von herannahenden Flugzeugen.
FR1466506A (fr) * 1965-12-08 1967-01-20 Support pour microphone
US4028504A (en) * 1975-11-12 1977-06-07 Fred M. Dellorfano, Jr., And Donald P. Massa, Trustees Of The Stoneleigh Trust U/D/T Acoustic amplifier combined with transducer shock mount
DE2735104A1 (de) * 1977-08-04 1979-02-15 Braun Ag Mikrophon fuer tonfilmkamera

Also Published As

Publication number Publication date
CH646829A5 (it) 1984-12-14
WO1984003812A1 (fr) 1984-09-27
EP0134751A1 (de) 1985-03-20
EP0140901A1 (de) 1985-05-15
DE3475688D1 (en) 1989-01-19

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