[LAU] Re: real time Grahic EQ

* Fons Adriaensen <[email protected]> [2025-04-25 11:12]:
> On Fri, Apr 25, 2025 at 09:54:39AM +0200, Peter P. wrote:
> 
> > Fons Adrieansen had an EQ program as well but I can't find it on
> > https://kokkinizita.linuxaudio.org/linuxaudio/ right now.
> 
> That would be zita-eq1. It's on the download page now.
Oh great! Thanks Fons!

> This is not 'graphical' in any way, but IMHO parametric EQ
> does a much better job for typical track EQ. I wrote this
> more than 15 years ago but it was never released.
> 
> From the README:
> 
> * Up to 64 channels (use -k).
> * 3rd order highpass, 10...320 Hz.
> * LF shelf section.
> * 3 parametric sections.
> * HF shelf section.
> * Bypass and makeup gain.
> * Fully de-clicked and de-zippered.
I suppose, its parameters can not be stored to/read from a (text)file or
are otherwise storable?

> The shelf sections have a variable slope. When this is set above
> 2/3 of the range, the gain will first go in the opposite direction
> before going up or down to the set gain. This was a feature of some
> of the most famous analog equalisers.
Does this mean there will be a resonance peak? I wonder which analog EQs
used this and if its users were aware of this feature at all....

best, P
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