(19)
(11) EP 0 238 187 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.03.1989 Bulletin 1989/11

(43) Date of publication A2:
23.09.1987 Bulletin 1987/39

(21) Application number: 87301097.9

(22) Date of filing: 09.02.1987
(51) International Patent Classification (IPC)4: G10H 3/14
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 12.02.1986 GB 8603457

(71) Applicant: Pennwalt Piezo Film Limited
Dunfermline Fife KY11 5JN (GB)

(72) Inventors:
  • Strachan, John Scott
    Edinburgh EH3 6ED (GB)
  • Brown, Richard
    Edinburgh EH16 4TG (GB)

(74) Representative: Murgitroyd, Ian George et al
Murgitroyd and Company 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)

   


(54) Contact microphone for cymbals and the like


(57) The microphone comprises one or more strips (30) of a piezoelectric sheet material secured to the surface of the cymbal (10), each strip having metallised electrodes on its opposed surfaces. The strips are disposed radially of the cymbal. The preferred material is polyvinylidene fluoride in polarized form, the axis of the main uniaxial mode of the material being transverse to the longitudinal axes of the strips.
In an alternative embodiment (Fig. 1), a single radial strip (16) is used in combination with a circumferential strip (18).






Search report