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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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closed as too broad by hotpaw2, Matt L., jojek, Peter K. Mar 9 '16 at 13:27

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ 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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