参数资料
型号: TAS3004PFBRG4
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: GREEN, PLASTIC, TQFP-48
文件页数: 76/84页
文件大小: 671K
代理商: TAS3004PFBRG4
A–13
Table A–16. Time Constants
HEXADECIMAL VALUE
TIME DELAY
40
1.7 ms
50
3.5 ms
60
6.7 ms
70
13 ms
80
26 ms
90
53 ms
A0
106 ms
B0
212 ms
C0
425 ms
D0
850 ms
E0
1.7 s
F0
2.4 s
A.7.6
DRCE Example With Threshold at –12 dB
From the DRCE example shown in Figure A–2, the threshold is set at –12 dB. The input energy E, has a value of
–6 dB.
Output (dB) = [T(dB) + ( E(dB) – T(dB) ) x (1/CR)]
= [–12 + (–6 – (–12)) x (1/3)] dB
= –12 + 2 = –10 dB
Where:
CR = Compression Ratio
T = Threshold (dB)
E = Energy estimate of current input
Note: Energy of sine wave is approximately 3 dB lower than peak.
0 dB
Output (dB)
Threshold = –12 dB
0 dB
Final Output = –10 dB
Input (dB)
E = –6 dB
3:1 Above Threshold
Ratio for Compression
1:1 Below Threshold
Ratio for Compression
Figure A–2. DRCE Example With Threshold at –12 dB
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