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# AudioUnitParameterUnit.absoluteCents

An absolute unit of measure for the musical pitch of a note.

```
case absoluteCents
```

## Discussion

Absolute musical pitch in cents. 1,200 cents are equal to one octave. If `f` is a frequency in hertz, then `absoluteCents = 1200 * log2 (f/440) + 6900`. See also the [`AudioUnitParameterUnit.cents`](/documentation/AudioToolbox/AudioUnitParameterUnit/cents) property.

---

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