Canon MV750i E - 4-4 Audio Signal Flow

MV750i E, MV730i E, MV700i E, MV700 E, MV690 E
TECHNICAL DESCRIPTION
13
4-4 Audio Signal Flow
< AIF >IC801
Out plus ALC (Auto Level Control), fading, and amplification of various output signals. For the beep tone issued at ejection, etc.,
the signal from the FR MI-COM is generated in the circuit and changed over in the AIF.
The microphone amplifier, HPF, ALC, A/D, D/A, and digital I/F, SPEAKER DRIVER with ALC circuits are contained in this IC.
It is also used for changeover between ordinary voice sound and beep sound.
< VIC4 >IC802
Carries out a comb filter treatment for reducing the DMC input noise.
Fig. 11
SPEAKER
DRIVER
FR
MI-COM.
IC801
AIF4
IC1103
DIGIC DV
IC2301
VIC4
IC2000
VRP2
+
−
L
L
R
L
R
R
MIC
HEAD
PHONE
AV
JACK
B EEP
Serial
SPEAKER
MEM IF CARD IF
SDRAM CARD
REC/
PB
HEAD