模拟节目信号功率谱 (GB 9001-88) p48
频 率
(Hz) |
相对电平
(dB)
|
容差极限(dB) |
频 率
(Hz) |
相对电平
(dB)
|
容差极限(dB) |
+ |
— |
+ |
— |
20 |
-13.5 |
3.0 |
3.0 |
630 |
0 |
0.5 |
0.5 |
25 |
-10.2 |
2.0 |
2.0 |
800 |
0 |
0.5 |
0.5 |
31.5 |
-7.4 |
1.0 |
1.0 |
1000 |
-0.1 |
0.6 |
0.6 |
40 |
-5.2 |
1.0 |
1.0 |
1250 |
-0.3 |
0.7 |
0.7 |
50 |
-3.5 |
1.0 |
1.0 |
1600 |
-0.6 |
0.8 |
0.8 |
63 |
-2.3 |
1.0 |
1.0 |
2000 |
-1.0 |
1.0 |
1.0 |
80 |
-1.4 |
1.0 |
1.0 |
2500 |
-1.6 |
1.0 |
1.0 |
100 |
-0.9 |
0.8 |
0.8 |
3150 |
-2.5 |
1.0 |
1.0 |
125 |
-0.5 |
0.6 |
0.6 |
4000 |
-3.7 |
1.0 |
1.0 |
160 |
-0.2 |
0.5 |
0.5 |
5000 |
-5.1 |
1.0 |
1.0 |
200 |
-0.1 |
0.5 |
0.5 |
6300 |
-7.0 |
1.0 |
1.0 |
250 |
0 |
0.5 |
0.5 |
8000 |
-9.4 |
1.0 |
1.0 |
315 |
0 |
0.5 |
0.5 |
10000 |
-11.9 |
1.0 |
1.0 |
400 |
0 |
0.5 |
0.5 |
12500 |
-14.8 |
1.5 |
1.5 |
500 |
0 |
0.5 |
0.5 |
16000 |
-18.2 |
2.0 |
2.0 |
630 |
0 |
0.5 |
0.5 |
20000 |
-21.6 |
3.0 |
3.0 |