參數(shù)資料
型號(hào): HA12166F
廠商: Hitachi,Ltd.
英文描述: Audio Signal Processor for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp)
中文描述: 音頻信號(hào)處理器為汽車甲板和卡座(杜比B型鉛放大器星期日)
文件頁(yè)數(shù): 19/66頁(yè)
文件大小: 578K
代理商: HA12166F
HA12163 Series
Rev.4, Jun. 1999, page 19 of 66
7. 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
I
L
Figure 4 Music Sensor Block Diagram
FF or REV
f
1
f
2
f
4
f
3
1 k
100
10
10 k
25 k
100 k
f [Hz]
Gv1
Gv2
Gv
[dB]
Normal speed
Figure 5 Frequency Response
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