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Question: In a very early version of winamp, the changelog mentioned "add EQ, but how?" Where did you eventually find out how?
Asked by Will (24.234.128.x) on May 27 2010, 3:28pm
Reply on May 28 2010, 2:31pm:
    Initially I just experimented with tweaking the MDCT coefficients in the mp3 decoder. Later on I found some stuff on IIR filters (so that the EQ could work on other formats etc), I have no idea where from, then eventually another person (I think someone from 4front) gave us better filters, too. These days, though, I'd look at the RBJ filter guide...

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