| 摘要 |
<p>PCT No. PCT/FI96/00605 Sec. 371 Date Oct. 6, 1998 Sec. 102(e) Date Oct. 6, 1998 PCT Filed Nov. 8, 1996 PCT Pub. No. WO97/39602 PCT Pub. Date Oct. 23, 1997Stringed musical instrument transducer for converting vibrations into electric signals. The transducer is composed of at least one transducer element (118) at least one dielectric film (107, 108), on at least one side of the transducer element, at least one signal electrode (109) and at least two ground electrodes (111-113), the transducer element having a transducer part (116) and a connection element part (115). The transducer element is an electret film containing a permanent electric charge. The film is a cell type electret film. The transducer part has a laminated structure. At least the signal electrode is a film like layer, disposed on the surface of the dielectric film. The transducer have the unitary laminated structure, where the signal and the ground electrodes are disposed on the surface of at least one dielectric film and continue unitary from the transducer part as a connection element part, the electrodes extend from the transducer part of connection element part for connecting the transducer to a signal processing device.</p> |
