Equalizing audio under linux / Raspberry Pi
You can simply implement this as an IIR filter directly in Python using https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.sosfilt.html
Each Room EQ wizard section can be turned into a second order filter section using RBJs Audio EQ Cookbook (See for example https://webaudio.github.io/Audio-EQ-Cookbook/audio-eq-cookbook.html or https://www.musicdsp.org/en/latest/Filters/197-rbj-audio-eq-cookbook.html). You want the &quot;peaking EQ&quot;. Then just cascade all sections into a single SOS.
Note: If your filter parameters look like https://github.com/mikebrady/shairport-sync/wiki/Digital-Signal-Processing-with-Shairport-Sync I advise some caution: You have a lot of VERY high Q features are 6 Hz/12 Hz (very low freqencies). These could be numerically unstable and you really don't need them. I would eliminate all sections below 30 Hz and just make sure you have decent highpass filter somewhere in the signal chain.