Scaleable Eq vs C* eq

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Scaleable Eq vs C* eq

Postby Jester » Wed Jan 01, 2014 6:55 am

I am very hesitant to file this here as a bug report sound it such a subjective thing but the more I think about it? The difference is too great that I feel something funky must be going on.

Scaleable eq is a 10 band eq with the same freq as the C* 10 band eq plugin but it is very hard to reproduce the same results between eq's. Even if I play with just the 4k freq the lack of range and sound in the scaleable seems a miss.

Please find my preset attached I think the C* eq sounds great compared to the scaleable - Also note I go from a computer straight into a power amp into stereo cabs so this pre-set might be a bit bright if you go into a guitar amp.



Thanks Jester.
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Re: Scaleable Eq vs C* eq

Postby brummer10 » Wed Jan 01, 2014 3:34 pm

Hi

Welcome to the guitarix forum.
Well, the C* 10 band eq use other internal filters then the Scaleable eq.
You can lower the "Q" parameter in the Scaleable eq to come to more comparable results.
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Re: Scaleable Eq vs C* eq

Postby Jester » Thu Jan 02, 2014 12:39 pm

Thanks brummer10 - Your too kind. and I am really enjoying guitarix :D
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Re: Scaleable Eq vs C* eq

Postby adegert » Thu Jan 02, 2014 3:48 pm

brummer10 wrote:You can lower the "Q" parameter in the Scaleable eq to come to more comparable results.


In this case you would have to lower Q to about 0.6, but the lower limit in the UI is 1. The scalable EQ is quite bad as a graphic equalizer (it's good at modifying single frequency bands, though in general the default Q of 50 is way too high). The caps equalizer also has its problems (e.g. bad ripple when gain is set to 0 for all bands). Perhaps we should add a graphic equalizer based on the Faust filterbank.

With Q = 0.6 for all banks (you need to modify src/faust/selecteq.dsp to be able to set this value) and the following gain values it should sound quite similar:

Code: Select all
31.25: 0
62.5:  7.5
125:   2
250:   -5.5
500:   2
1000:  3
2000:  4
4000:  4.5
8000:  2
16000: 0


caps_vs_eqs.png
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Re: Scaleable Eq vs C* eq

Postby Jester » Fri Jan 03, 2014 3:53 am

Cool !! ;)
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Re: Scaleable Eq vs C* eq

Postby brummer10 » Mon Jan 13, 2014 3:56 pm

adegert wrote:Perhaps we should add a graphic equalizer based on the Faust filterbank.

Okay, I've added a Graphic EQ based on the Faust filterbank, it use a bit more CPU then the scalable one, but it works really great.
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