Hello,
I am not sure if this was posted before (did not find it in a search)
but it might be of interest to some of you wanting to get into DSP based effects.
Flanger, chorus, vibrato, etc. are described with source code example for their
chip. I am assuming that the concepts can be applied to other DSP platforms.
http://www.analog.com/UploadedFiles/Application_Notes/7056820721065L_Audio_Tutorial.pdf
It looks quite good, from my point of view.
Norm