DESCRIPTION
The TDA7430/7431 are volume tone (bass middle and treble) balance (Left/Right) processors with voice canceller for quality audio applications in car radio and Hi-Fi systems.
They reproduce surround sound by using programmable phase shifters and a signal matrix.
Control of all the functions is accomplished by serial bus.
The AC signal setting is obtained by resistor networks and switches combined with operational amplifiers.
Thanks to the used BIPOLAR/CMOSTechnology, Low Distortion, Low Noise and DC stepping are obtained.

■ 1 STEREO (4 STEREO) INPUT + 1 MIXER INPUT
■ INPUT ATTENUATION CONTROL IN 0.5dB STEP
■ VOICE CANCELLER IS AVAILABLE
■ TREBLE MIDDLE AND BASS CONTROL
■ THREE SURROUND MODES ARE AVAILABLE:
   - MUSIC: 4 SELECTABLE RESPONSES
   - MOVIE AND SIMULATED: 256 SELECTABLE RESPONSES
■ 2 SPEAKER AND 2 RECORD ATTENUATORS:
   - 2 INDEPENDENT SPEAKERS AND 2 INDEPENDENT RECORD CONTROL IN 1dB STEP FOR BALANCE FACILITY
   - AVAILABILITYOF LOUDSPEAKER EQUALIZATIONFIXED BY EXTERNAL COMPONENTS
   - INDEPENDENT MUTE FUNCTION
■ ALL FUNCTIONS PROGRAMMABLE VIA SERIAL BUS