RIAA EQ / phono EQ to line level

    Feb 03 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?

    • Feb 04 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.
    • Feb 08 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..)