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? Thanks!

    • 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..)