RIAA EQ / phono EQ to line level

Feb 3, 2011 at 10:10pm

RIAA EQ / phono EQ to line level

Has anyone made a RIAA or Inverse RIAA EQ in msp? I need one ASAP for a test application I’m making for my company and the source spits out line level into phono inputs, totally screwing the frequency response test. Maybe someone has dealt with this already?

Feb 4, 2011 at 6:42am

you should cascade two biquad~ highpasses and make the curve
look somewhat similar to what you can find about the RIAA on the
net, that should be fine.


Feb 8, 2011 at 4:24pm

I did something similar here in “riaa-anti-riaa-filters.maxpat”. it comes with a factor parameter (“1″ means RIAA-like, “-1″ means inverse-RIAA)

(used in this patch to try to reduce artefacts while playing with [wavelet~] from cnmat, a while ago, object that i still don't understand really..)


  1. 615pxRIAAEQCurve.svg.png

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