系统内冗余或重复数据的度量，表明存储和潜在性能问题效率低下。
1 SP = 1 FDR
1 FDR = 1 SP
例子:
将15 信号功率冗余转换为频级冗余：
15 SP = 15 FDR
| 信号功率冗余 | 频级冗余 |
|---|---|
| 0.01 SP | 0.01 FDR |
| 0.1 SP | 0.1 FDR |
| 1 SP | 1 FDR |
| 2 SP | 2 FDR |
| 3 SP | 3 FDR |
| 5 SP | 5 FDR |
| 10 SP | 10 FDR |
| 20 SP | 20 FDR |
| 30 SP | 30 FDR |
| 40 SP | 40 FDR |
| 50 SP | 50 FDR |
| 60 SP | 60 FDR |
| 70 SP | 70 FDR |
| 80 SP | 80 FDR |
| 90 SP | 90 FDR |
| 100 SP | 100 FDR |
| 250 SP | 250 FDR |
| 500 SP | 500 FDR |
| 750 SP | 750 FDR |
| 1000 SP | 1,000 FDR |
| 10000 SP | 10,000 FDR |
| 100000 SP | 100,000 FDR |
规则