I want to run audio FFT transformations on a GPU using, possibly, OpenCL. What are the best optimization strategies for:

  • converting audio signals to FFT;
  • transfer them to the graphics card;
  • compute those
  • return the FFT into audio signal domain

if possible, i would like to do such a thing:

  • with minimum latency possible;
  • in real time;
  • using really big fft window sizes;
  • using really high sample rates and bit depth

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