---
title: MPEG4ObjectID.AAC_SBR
framework: coreaudiotypes
role: symbol
role_heading: Case
path: coreaudiotypes/mpeg4objectid/aac_sbr
---

# MPEG4ObjectID.AAC_SBR

A constant that specifies spectral band replication, which reconstructs high-frequency content from lower frequencies and side information.

## Declaration

```swift
case AAC_SBR
```

## See Also

### Constants

- [MPEG4ObjectID.AAC_LC](coreaudiotypes/mpeg4objectid/aac_lc.md)
- [MPEG4ObjectID.AAC_LTP](coreaudiotypes/mpeg4objectid/aac_ltp.md)
- [MPEG4ObjectID.aac_Main](coreaudiotypes/mpeg4objectid/aac_main.md)
- [MPEG4ObjectID.AAC_SSR](coreaudiotypes/mpeg4objectid/aac_ssr.md)
- [MPEG4ObjectID.aac_Scalable](coreaudiotypes/mpeg4objectid/aac_scalable.md)
- [MPEG4ObjectID.CELP](coreaudiotypes/mpeg4objectid/celp.md)
- [MPEG4ObjectID.HVXC](coreaudiotypes/mpeg4objectid/hvxc.md)
- [MPEG4ObjectID.twinVQ](coreaudiotypes/mpeg4objectid/twinvq.md)