Linear ramps for audio unit parameter changes

edited June 2014

I am using the AEAudioUnitFilter to access the built-in delay audiounit. I am using the AudioSetParameter to change each of the available parameters. When changing the delay time parameter, there is a noticeable distortion. How would I go about creating a short linear ramp for these changes to avoid this distortion? Is AudioScheduleParameters the way to go? In PD or Max, I would use the line~ object with 20 ms crossfade to smooth this type of modification out, but can't figure out the core audio equivalent or workaround.


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