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I want to get into audio signal processing. I know how to generate a tone, but I have no idea how filters work. What do I do to a set of samples to boost/cut a frequency with adjustable bandwidth? What is FFT? What's the code behind a parametric equalizer?

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  • $\begingroup$ Indeed @robertbristow-johnson ;) $\endgroup$ – jojek Mar 9 '16 at 10:34
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you need to familiarize with concepts such us:

Hope these basic links help you to do a bit more of research :)

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