Apparatus and method for controlling sound for audio/video appli

Audio bass frequency enhancement

Audio frequency filter

Audio reproducing apparatus

Audio signal processor

Audio signal processors

Audio signal reproducing device

Audio system for a computer

Automatic loudness control circuit

Bass compensation circuit for use in sound reproduction device

Computer audio system

Device for aurally compensated loudness control

Dual range audio level control

Dynamic equalizing

Dynamic equalizing

Electroacoustic apparatus having ringing signal generation...

Equalizer and audio device using the same

Equalizer and audio device using the same

Filter circuit and audio signal processor provided therewith

Gain controller