Patent ID: 6771785
Filing Date: 2004-08-03
Classification: B06B,B82Y,H04R

Abstract:
An electrostatic acoustic transducer, comprising:a first electrode including a first cover portion, a plurality of plates, and at least one resilient member disposed between the first cover portion and the plurality of plates; a vibrator film layer having at least one conductive side and at least one non-conductive side, the conductive side of the vibrator film layer forming a second electrode of the transducer; and a first retaining layer having a plurality of first apertures formed therethrough, wherein each one of the plurality of plates is substantially in registration with a respective one of the first apertures formed through the first retaining layer, wherein the at least one resilient member is configured to urge the respective plates against the vibrator film layer, and wherein the transducer is configured to receive a drive voltage across the first and second electrodes for vibrating the vibrator film layer, thereby generating a series of compression waves at sonic or ultrasonic frequencies.