wavsheild sampler/granular synthesiser

I would like to build a audio sampling device which i can controll the speed of playback, cut down and loop a sample, and perhaps add various other effects to the sample that is being played such as delay, resonance, reverb. has anyone tried anything similar to this? microGranny - pocket-sized handmade granular sampler on Vimeo what i have in mind is something similar to the microgranny. i am wondering if it will be possible to build this on an arduino uno and adafruit wavsheild.

alot of the questions i had have been answered here. anyone working on anything similar?

Have you seen this?

It is open source so you can make it yourself, buy a kit or ready made.