SERVICE MANUAL
4. TV Sound Processor TA1343N
TA1343N is a sound processor controlled by I
2
C bus. It incorporates the following: 2-channel input,
3-channel output signal processing circuit, phase shift circuit for surround, and LPF for woofer channel.
ALS (Automatic Level Suppresser) circuit which prevents distort the signal in large signal condition for woofer
channel is also incorporated
1) Features
•
Sound processing circuit
●
2ch inputs (Lch, Rch)
●
3ch outputs (Lch, Rch, Wch)
●
Input matrix switch
●
Volume control
●
Bass, treble, and balance adjustment
●
Woofer level and surround effect level adjustment Fig. 15
ALS (Automatic Level Suppresser) circuit
2)
Built-in LPF for bass boost
•
Surround circuit
2)
Phase shift surround system
z
2 modes stereo surround
2)
Pseudo stereo mode
2) Block Diagram
Fig 16 Block Diagram
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