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# AU3DMixerAttenuationCurve

```
enum AU3DMixerAttenuationCurve
```

## Topics

### Constants

[`k3DMixerAttenuationCurve_Exponential`](/documentation/AudioToolbox/AU3DMixerAttenuationCurve/k3DMixerAttenuationCurve_Exponential)

An exponential attenuation curve.

[`k3DMixerAttenuationCurve_Inverse`](/documentation/AudioToolbox/AU3DMixerAttenuationCurve/k3DMixerAttenuationCurve_Inverse)

An inverse attenuation curve.

[`k3DMixerAttenuationCurve_Linear`](/documentation/AudioToolbox/AU3DMixerAttenuationCurve/k3DMixerAttenuationCurve_Linear)

A linear attenuation curve.

[`k3DMixerAttenuationCurve_Power`](/documentation/AudioToolbox/AU3DMixerAttenuationCurve/k3DMixerAttenuationCurve_Power)

An equal-power-based attenuation curve.

## Relationships

### Conforms To

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Hashable`](/documentation/Swift/Hashable)

[`Sendable`](/documentation/Swift/Sendable)

[`Equatable`](/documentation/Swift/Equatable)

---

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