7431 canceller equivalent, digitally controlled audio processor with surround sound matrix and voice canceller.
in car radio and Hi-Fi systems. They reproduce surround sound by using programmable phase shifters and a signal matrix. .
The TDA7430/7431 are volume tone (bass middle and treble) balance (Left/Right) processors with PIN CONNECTIONS
PS4 PS3 PS2 PS1 LP LP1 HP1 HP2 VOUTREF VAR_L BASSO_L VAR_R BASSO_R BASS_LO BASS_LI BASS_RO BASS_RI MIDDLE_LO MIDDLE_LI MIDDLE_RO MIDDLE_RI .
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