频率是每单位时间重复事件的发生数量。它是在赫兹（Hz）中测量的。
1 THz = 500,000,000,000 oct
1 oct = 2.0000e-12 THz
例子:
将15 Terahertz转换为八度：
15 THz = 7,500,000,000,000 oct
| Terahertz | 八度 |
|---|---|
| 0.01 THz | 5,000,000,000 oct |
| 0.1 THz | 50,000,000,000 oct |
| 1 THz | 500,000,000,000 oct |
| 2 THz | 1,000,000,000,000 oct |
| 3 THz | 1,500,000,000,000 oct |
| 5 THz | 2,500,000,000,000 oct |
| 10 THz | 5,000,000,000,000 oct |
| 20 THz | 10,000,000,000,000 oct |
| 30 THz | 15,000,000,000,000 oct |
| 40 THz | 20,000,000,000,000 oct |
| 50 THz | 25,000,000,000,000 oct |
| 60 THz | 30,000,000,000,000 oct |
| 70 THz | 35,000,000,000,000 oct |
| 80 THz | 40,000,000,000,000 oct |
| 90 THz | 45,000,000,000,000 oct |
| 100 THz | 50,000,000,000,000 oct |
| 250 THz | 125,000,000,000,000 oct |
| 500 THz | 250,000,000,000,000 oct |
| 750 THz | 375,000,000,000,000 oct |
| 1000 THz | 500,000,000,000,000 oct |
| 10000 THz | 5,000,000,000,000,000 oct |
| 100000 THz | 50,000,000,000,000,000 oct |
规则