Acoustic apparatus having balance adjustment

Adjusting the level of an audio signal

Apparatus and method for adjusting sound volume for...

Apparatus and method for improving voice clarity

Apparatus and method for maintaining a constant speech...

Apparatus for controlling audio recording bias

Audio amplifier arrangement

Audio loudness control system

Audio signal processing apparatus

Audio signal processing method and related device

Audio signal reproduction apparatus

Audiometer attenuation method and apparatus

Automatic gain control

Automatic gain control circuit

Automatic level control circuit for restricting sound level

Automatic level control of multiple audio signal sources

Automatic sound volume control method

Automatic volume control for audio signals

Automatic volume control for communication system