RIAA equalization

Questions
1

hi

how can i do RIAA equalization (emphasis) in both ways ?

tnx

2

I did a quick search and found an old thread here:
https://www.musicdsp.org/en/latest/Filters/122-digital-riaa-equalization-filter-coefficients.html
which at the end gives “working filter coefficients for biquad implementation of RIAA EQ Reproduction filters” that you could try in a biquad filter - see SC ugen SOS.ar “Second order filter section (biquad)”.
I haven’t tried these myself, but it might be worth a go?
Hope that maybe helps.
Paul

3

thanks for finding this!

seems to work, i will check in detail tomorrow.

SOS.ar(x, 0.02675918611906, -0.04592084787595, 0.01921229297239, 0.73845850035973, 0.17951755477430);

4

The BEQSuite of ugens are all SOS based as well, and I thought someone used the BandPass variants at one time for RIAA curves