Forums > MaxMSP

RIAA EQ / phono EQ to line level

February 3, 2011 | 10:10 pm

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?
Thanks!


February 4, 2011 | 6:42 am

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.

-110


February 8, 2011 | 4:24 pm

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..)

[attachment=153502,1790]

Attachments:
  1. 615pxRIAAEQCurve.svg.png

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