Flexible tape electroacoustic transducer using an electret

Details Flexible tape electroacoustic transducer using an electret Flexible tape electroacoustic transducer using an electret

1981-01-22

1983-06-21

Moffitt, James W.

Electrical transmission or interconnection systems

Electrets

340540, 340550, 340621, H04R 2300

Patent

active

043895808

ABSTRACT:
An electroacoustic transducer is provided in the form of a flexible tape formed of an inner flat metal foil 10 surrounded by a metal foil 14 and separated from the latter by an electret 12. The outer metal foil 14 is in turn surrounded by a PVC outer layer 20. This construction provides a flexible electret type of microphone with the additional advantage of immunity from ambient acoustic waves and electrical and magnetic fields.

REFERENCES:
patent: 2990543 (1961-06-01), Rod
patent: 3705312 (1972-12-01), Sessler et al.
patent: 3763482 (1973-10-01), Burney et al.
patent: 3809828 (1974-05-01), Haugsjaa et al.
patent: 3821491 (1974-06-01), Whetstone et al.
patent: 3889250 (1975-06-01), Solomon

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