How is it possible to read and analyse the information found in real-time (e.g user soundtrack) audio in a way as to generate images based on it? (A visualizer of sorts)
..or do I have to resort to signal analysis, Fourier's transforms etc?
I read something about Xaudio2 being capable of some low level magic but a) is this free or do I need an XDK proper? b) will it allow me to read the data I need?
I also read something about FMOD in XDK, could someone explain this?



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