I am currently working on a performance piece in which it is very important that one specific sample seamlessly morphs into another. I first considered crossfading from one to the other but it did not achieve the desired effect. What I would like to do instead is to convolve the two samples but rather than just convolving the two and having a third sample with the characteristics of both I'd to be able to control how much of the qualities (amplitude and phase is of course what I'll be dealing with but let's say for the sake of simplicity that I'll only deal with amplitudes) of one sample are present in the other. I would like a knob or slider that when turn all the way one way, would allow the unchanged playback of the first sample, when turned completely the other way would play the other sample unedited but in between would be a sort of crossfade but with convolution instead of volume.
I understand pfft and convolution normally but I can't figure out the math on this one. Can someone please help?