---
title: kAudioCodecExtendFrequencies
framework: audiotoolbox
role: symbol
role_heading: Global Variable
path: audiotoolbox/kaudiocodecextendfrequencies
---

# kAudioCodecExtendFrequencies

## Declaration

```swift
var kAudioCodecExtendFrequencies: AudioCodecPropertyID { get }
```

## See Also

### Constants

- [kAudioCodecBitRateFormat](audiotoolbox/kaudiocodecbitrateformat.md)
- [kAudioCodecDoesSampleRateConversion](audiotoolbox/kaudiocodecdoessamplerateconversion.md)
- [kAudioCodecInputFormatsForOutputFormat](audiotoolbox/kaudiocodecinputformatsforoutputformat.md)
- [kAudioCodecOutputFormatsForInputFormat](audiotoolbox/kaudiocodecoutputformatsforinputformat.md)
- [kAudioCodecOutputPrecedence](audiotoolbox/kaudiocodecoutputprecedence.md)
- [kAudioCodecPropertyAvailableBitRates](audiotoolbox/kaudiocodecpropertyavailablebitrates.md)
- [kAudioCodecPropertyAvailableInputChannelLayouts](audiotoolbox/kaudiocodecpropertyavailableinputchannellayouts.md)
- [kAudioCodecPropertyAvailableOutputChannelLayouts](audiotoolbox/kaudiocodecpropertyavailableoutputchannellayouts.md)
- [kAudioCodecPropertyInputChannelLayout](audiotoolbox/kaudiocodecpropertyinputchannellayout.md)
- [kAudioCodecPropertyOutputChannelLayout](audiotoolbox/kaudiocodecpropertyoutputchannellayout.md)
- [kAudioCodecPropertyRequiresPacketDescription](audiotoolbox/kaudiocodecpropertyrequirespacketdescription.md)
- [kAudioCodecPropertyZeroFramesPadded](audiotoolbox/kaudiocodecpropertyzeroframespadded.md)
- [kAudioCodecUseRecommendedSampleRate](audiotoolbox/kaudiocodecuserecommendedsamplerate.md)