參數(shù)資料
型號: HA12177
廠商: Hitachi,Ltd.
英文描述: Audio Signal Processor for Car Deck and Cassette Deck (Dolby B/C-type NR with PB Amp)
中文描述: 音頻信號處理器(杜比B / C型與鉛放大器為汽車甲板上午和卡座)
文件頁數(shù): 16/66頁
文件大?。?/td> 1116K
代理商: HA12177
HA12173 Series
Rev.1, Nov. 1992, page 16 of 66
The Sensitivity Adjustment of a Music Sensor
Adjusting MS AMP. gain by external resistor, the sensitivity of music sensor can set up.
R24
330 k
+
+
LPF
TAI (R)
X1
6 dB
26 dB
25 kHz
MS AMP
100 k
L
·
R signal addition circuit
TAI (L)
X1
C28
4700 p
MS
V
REF
FFI
NOI
MA
OUT
MSI
MS
DET
DET
R26
R25
R28
R27
0.33
μ
C13
+
0.01
μ
C14
V
CC
DV
CC
R
L
MS OUT
D GND
D GND
Microcomputer
Unit R:
C: F
I
L
Figure 4 Music Sensor Block Diagram
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