Adjustable tension support band for headset
Adjustable, dual speaker element in-ear phone
Adjusting acoustic speaker output based on an estimated...
Adjusting acoustic speaker output based on an estimated...
Aid to hearing speech in a noisy environment
Air coupled ultrasonic transducer
Air-gap hydrophone
All-in-one headset
Ambient and direct surround sound system
Ambient imaging loudspeaker system
Amplified tree structure technology for fiber optic sensor...
Amplifier and sound reproduction system
Amplifying and equalizing
Amplifying circuit for use with a transducer
An acoustical audio system for producing three dimensional...
An anti-noise pick-up
An anti-noise-electret pick-up
An apparatus and method for operating a hearing aid
An arrangement in acoustic headsets
An ear wax guard for an in-the-ear hearing aid and means for...