Damped structural panel and method of making same

Damper for a loudspeaker and a method for producing the same

Damper for a speaker apparatus

Damper for hearing aid

Damper for loudspeaker and method for manufacturing same

Damper for speaker

Damper structure of preventing irregular vibration for speaker

Damping for directional sound cancellation

Damping terminator for high fidelity audio signals

Data compression circuit of a digital audio tape recorder

Data compression method and apparatus in which quantizing bits a

Data compression system and method for audio signals

Data compression system and method for audio signals

Data compression system and method with buffer control

Data compression system for voice data

Data logging method for hearing prosthesis

Data over voice transmission arrangement

Data processing apparatus and method for use in speech recogniti

Data processing apparatus with combined voice sound reproducing

Data transmission device for hearing aids