Automatic volume control circuit

Automatic volume control to compensate for ambient noise variati

Automatic volume controlling apparatus

Control circuit

Dynamic distortion elimination for output audio

Dynamic volume adjustment in a slot machine

Electronic audio device and method of operation

Environmental noise monitoring

Fuzzy logic device for automatic sound control

Headset with ambient sound

Hearing aid method and apparatus

Intercom system including improved automatic squelch control...

Method and apparatus for dynamic sound optimization

Method and apparatus for dynamic sound optimization

Method and arrangement for reproducing audio signals

Method and circuit assemblage for influencing the treble...

Method and device for determining acoustical transfer impedance

Method and system for amplifying auditory sounds

Method and system for matching the sound output of a loudspeaker

Method for automatically adjusting audio response for improved i