Acoustic apparatus and method of controlling an acoustic...

Acoustic coupler for skin contact hearing enhancement devices

Acoustic device with means for being secured in a human ear

Acoustic feedback cancelling electro-acoustic transducer network

Acoustic speaker device with a diaphragm having a spider web typ

Acoustical receiver housing for hearing aids

Acoustical receiver housing for hearing aids

Acoustical ribbon transducer loudspeaker system

Actuator for an active noise control system

Adaptive cross correlator apparatus comprising adaptive controll

Adaptive filter including a far end energy discriminator

Adaptive gain and filtering circuit for a sound reproduction sys

Adaptive speech coder having code excited linear prediction

Adhesive film for the protection of hearing device...

Adjustable mount for a loudspeaker

Adjusting and display tool and potentiometer

Affixed behind-the-ear child resistant volume control cover

AM Stereo pilot signal detection circuitry

Ambidextrous earpiece

Ambidextrous earpiece