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 kHz = 500 oct
1 oct = 0.002 kHz
例子:
将15 千赫兹转换为八度：
15 kHz = 7,500 oct
| 千赫兹 | 八度 |
|---|---|
| 0.01 kHz | 5 oct |
| 0.1 kHz | 50 oct |
| 1 kHz | 500 oct |
| 2 kHz | 1,000 oct |
| 3 kHz | 1,500 oct |
| 5 kHz | 2,500 oct |
| 10 kHz | 5,000 oct |
| 20 kHz | 10,000 oct |
| 30 kHz | 15,000 oct |
| 40 kHz | 20,000 oct |
| 50 kHz | 25,000 oct |
| 60 kHz | 30,000 oct |
| 70 kHz | 35,000 oct |
| 80 kHz | 40,000 oct |
| 90 kHz | 45,000 oct |
| 100 kHz | 50,000 oct |
| 250 kHz | 125,000 oct |
| 500 kHz | 250,000 oct |
| 750 kHz | 375,000 oct |
| 1000 kHz | 500,000 oct |
| 10000 kHz | 5,000,000 oct |
| 100000 kHz | 50,000,000 oct |
规则