Hi Jack! Are any of the notes on the dsPIC specifically? Fran told me that it was "a completely different animal" from the 8 bit pics.
roflwaffle: I just need a couple hours where I do some of the transformations on some sample vectors to get a feel for what is going on. Check out page 3 on this application note to see the whole picture of what is going on-
Link to the thingy