"Ear" hearing aid

Acoustic apparatus

Acoustic imaging

Acoustic modeling system and method using pre-computed data...

Acoustic signal processing method and apparatus

Acoustic signal processing unit

Acoustic signal processing unit

Acoustic signal-processing apparatus and method

Acoustic systems

Acoustically transparent earphones

Active sound effect generating apparatus

Adaptive, programmable signal processing and filtering for heari

Adaptive, programmable signal processing hearing aid

Adjustable distortion guitar amplifier

Air conduction hearing device

Amplifier circuitry with mode compensation and selectable gain a

Amplifier filter system for speech therapy

Amplifier for a guitar or other musical instrument

Amplifier with alternate output level

Antihowling hearing aid