10-30-2020, 10:51 PM
Quote:I have no idea if these values would make sense in EqFA4p.
This is the crux of the difficulty. Since Tim Goetze didn't see fit to give proper definitions to the adjustable parameters in EqFA4p (http://quitte.de/dsp/caps.html#EqFA4p) we're left to try to infer them from the text description
Quote:Four Mitra-Regalia peaking equaliser filters in series; a vector arithmetic re-implementation of Fons Adriaensens "Parametric1" equaliser[fafil] with minor differences.
Parallelisation of the serial filter organisation causes the output to lag by three samples.
The bw control sets the bandwidth of a single filter, lower values corresponding to increasing resonance.
and from the code itself.
I started walking the code last year (hence the link to the overview presentation about M-R filters I recently posted) but I never finished. Unfortunately, at the moment my notes are somewhere in a moving box full of papers (my FINO stack---first in, never out).
One can conjecture from the stated limiting values of the bw parameter (0.125 - 8) what one will, but it would be more comforting to be able to relate the parameters explicitly to the equation(s),
Kudos to all of you for pushing the ball forward, by the way.
Regards,
Kent
