---
title: kAudioFormatMPEGD_USAC
framework: coreaudiotypes
role: symbol
role_heading: Global Variable
path: coreaudiotypes/kaudioformatmpegd_usac
---

# kAudioFormatMPEGD_USAC

A key that specifies the MPEG-D Unified Speech and Audio Coding codec, and uses no flags.

## Declaration

```swift
var kAudioFormatMPEGD_USAC: AudioFormatID { get }
```

## See Also

### Format identifiers

- [kAudioFormat60958AC3](coreaudiotypes/kaudioformat60958ac3.md)
- [kAudioFormatAC3](coreaudiotypes/kaudioformatac3.md)
- [kAudioFormatAES3](coreaudiotypes/kaudioformataes3.md)
- [kAudioFormatALaw](coreaudiotypes/kaudioformatalaw.md)
- [kAudioFormatAMR](coreaudiotypes/kaudioformatamr.md)
- [kAudioFormatAMR_WB](coreaudiotypes/kaudioformatamr_wb.md)
- [kAudioFormatAppleIMA4](coreaudiotypes/kaudioformatappleima4.md)
- [kAudioFormatAppleLossless](coreaudiotypes/kaudioformatapplelossless.md)
- [kAudioFormatAudible](coreaudiotypes/kaudioformataudible.md)
- [kAudioFormatDVIIntelIMA](coreaudiotypes/kaudioformatdviintelima.md)
- [kAudioFormatEnhancedAC3](coreaudiotypes/kaudioformatenhancedac3.md)
- [kAudioFormatFLAC](coreaudiotypes/kaudioformatflac.md)
- [kAudioFormatLinearPCM](coreaudiotypes/kaudioformatlinearpcm.md)
- [kAudioFormatMACE3](coreaudiotypes/kaudioformatmace3.md)
- [kAudioFormatMACE6](coreaudiotypes/kaudioformatmace6.md)