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Implement the Tail Time Property

Finally, to ensure that your audio unit plays well in host applications, implement the tail time property, kAudioUnitProperty_TailTime.

To do this, simply state in your TremoloUnit class definition that your audio unit supports the property by changing the return value of the SupportsTail method to true.

Listing 5-14  Implementing the tail time property (TremoloUnit.h)

virtual bool SupportsTail () {return true;}

Given the nature of the DSP your audio unit performs, its tail time is 0 seconds—so you don’t need to override the GetTailTime method. In the AUBase superclass, this method reports a tail time of 0 seconds, which is what you want your audio unit to report.

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