Using the libraries pkmFFT and pkm::Mat, you can very easily perform a highly optimized short time fourier transform (STFT) with direct access to a floating-point based object.
Get the code on my github:
http://github.com/pkmital/pkmFFT
Depends also on: http://github.com/pkmital/pkmMatrix…
Apple’s Accelerate Framework can really speed up your code without thinking too much. And it will also run on an iPhone. Even still, I did bang my head a few times trying to get a straightforward Real FFT and IFFT …
This guide will help to get you running PrimeSense NITE’s Skeleton Tracking inside XCode on your OSX. It will also help you stream that data in case you’d like to use it in another environment such as Max. An example …