參數(shù)資料
型號(hào): HA12223F
廠商: Hitachi,Ltd.
英文描述: Audio Signal Processor for Car Deck(Decode only Dolby B type NR with PB Amp.)
中文描述: 音頻信號(hào)處理器。為汽車甲板(解碼杜比乙只用PB安培型降噪)
文件頁數(shù): 11/53頁
文件大?。?/td> 343K
代理商: HA12223F
HA12216F/HA12221F Series
Rev.6, Dec. 2000, page 11 of 53
The Sensitivity Adjustment of Music Sensor
Adjusting MS Amp. gain by external resistor, the sensitivity of music sensor can set up. The music sensor
block diagram is shown in figure 4, and frequency response is shown in figure 5.
+
+
TAI (L)
TAI (R)
C8
0.01
μ
F
C6
0.33
μ
F
R11
330k
MSOUT
REX2
CEX2
REX1
CEX1
+
MS
SER
MS
REP
MS
Amp.
×
1
MS
DET
MA
OUT
MSI
100k
90k
LPF
25kHz
DET
V
CC
DV
CC
L
R signal
addition circuit
20dB
6dB
×
1
+
GND
R
L
Micro
computer
28
21 20
19
18
17
15
36
35
3
Figure 4 Music Sensor Block Diagram
G
V2
G
V1
10
100k
25k
10k
1k
f
3
f
4
f
2
f
1
Search mode (SER)
f (Hz)
G
V
100
Repeat mode (REP)
Figure 5 Frequency Response
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