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# Converter Priming Constants

Constants used with the [`kAudioConverterPrimeMethod`](/documentation/AudioToolbox/kAudioConverterPrimeMethod) property.

## Topics

### Constants

[`var kConverterPrimeMethod_Pre: UInt32`](/documentation/AudioToolbox/kConverterPrimeMethod_Pre)

Prime with `leading` + `trailing` input frames.

[`var kConverterPrimeMethod_Normal: UInt32`](/documentation/AudioToolbox/kConverterPrimeMethod_Normal)

Prime with `trailing` frames only, for zero latency. Leading frames are assumed to be silence.

[`var kConverterPrimeMethod_None: UInt32`](/documentation/AudioToolbox/kConverterPrimeMethod_None)

Acts in “latency” mode. Leading and trailing frames are both assumed to be silence.


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