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# init(mType:mSubType:mManufacturer:)

Creates an audio class description for the type, subtype, and manufacturer.

```
init(mType: OSType, mSubType: OSType, mManufacturer: OSType)
```

## Parameters

`mType`

A four character code that a manufacturer defines for a codec type.

`mSubType`

A four character code that a manufacturer defines for a codec subtype.

`mManufacturer`

A four character code that identifies a codec manufacturer.

## Discussion

---

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