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New project idea

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Re: New project idea

Postby RJHollins » Mon May 02, 2022 4:15 am

k brown wrote:Oops, nope - the graphics are right, but the Fr controls were backwards/in the wrong place.
Replaced in previous post, also.
OneTen V_v1.001.fsm


On the Vertical layout ... i'm not sure those Shelf graphics follow general standards.

They are correct on the Horizontal layout.

Low Shelf =-- or >--
Hi Shelf --= or --<

excuse for explaining, the sideway V designates how the shelf boosts or cuts.
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Re: New project idea

Postby k brown » Mon May 02, 2022 5:44 am

The graphics are (and were) correct - top knob is high shelf; bottom one low shelf. In the initial post the frequency select knobs were not in the right place. Corrected in the subsequent post (and updated in original post).

Here's what the hardware panel looked like:

crop.png
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Re: New project idea

Postby RJHollins » Mon May 02, 2022 1:45 pm

Apologies k_b :oops:

I was looking at the posted graphics ... the Schematic is indeed correct.

8-)
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Re: New project idea

Postby k brown » Wed May 04, 2022 7:55 pm

How 'bout n'other?

This one's based on the legendary GML 8200 by George Massenburg, who is credited with inventing the parametric equalizer!

https://www.attackmagazine.com/techniqu ... l-8200-eq/
https://www.theaudiohunt.com/blog/the-p ... rg-gml8200

Two Low bands, one Mid band, and two High bands. The far left Low band, and the far right High band can switch to shelving filters by turning their 'Q' knobs fully CCW (clever idea, George).

The 'INIT' preset approximates the freq and Q settings of the Cello Palette (w/o the 15Hz band), and the 'Cello II' preset approximates the Cello w/o the 500Hz band (the band I use the least frequently).

Eighty-200.jpg
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Eighty-200_v1.001.fsm
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Re: New project idea

Postby RJHollins » Thu May 05, 2022 1:30 am

wooo ... very cool ... and nice looking GUI.

Can't help ask about me doing a mod, though .... :roll:

Since you introduced this, I've been doing a lot a testing with this 'CELLO' concept.

Also ... From what I'm reading about this, there does seem to be some discrepancies regarding
Freq choices and Q's [mainly at the extreme ends of the spectrum]. So I experiment with each of them [saved Presets].

As to modding ... that 500hz is, I think, a critical band, and I would like to expand to include it.

My question [please], would it just be a matter of duplicating one of those band 'modules', change the parameter
settings [center freq, q, gain], and insert it into the established serial chain ? Am I missing something ?

Thanks for any insight/guidance ... and thanks again for sharing this concept.

[like me also discreetly mention ... I am currently beta-testing on a up-coming EQ commercial release that has a similar
concept ... from the vintage days. [no ... its' not a FS creation] I can't really say much at this point [non-dis] ... but it is interesting the timing of all this. :o Once released, I can mention the company name ... they have done some quality product already.

again thanks !
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Re: New project idea

Postby k brown » Thu May 05, 2022 9:15 am

Sure, to add a band, just copy and paste everything.
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Re: New project idea

Postby billv » Thu May 05, 2022 11:54 am

Awesome work Mr brown...thanks for sharing... :D
BV MUSIC SYDNEY AUSTRALIA-Songwriting & Software Development.
http://users.tpg.com.au/billv
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Re: New project idea

Postby RJHollins » Thu May 05, 2022 1:51 pm

k brown wrote:Sure, to add a band, just copy and paste everything.


cool.

The other thing I notice to add ... the per Band BYPASS. Looking through the previous CELLO schematic to see how you did that.

thanks again !
8-)
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Re: New project idea

Postby k brown » Sat May 14, 2022 7:37 am

Annnd . . . this one takes it's cues from the MDW EQ (Massenburg Design Works) plugin that is largely based on his 8200 hardware EQ.

It's contains Martin's complete Matched Filters set (and then some) x5.

The filter types in each band are the same* as in the MDW EQ - 13 in bands 1 and 5; 9 in the other three.

MVK EQ.jpg
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MVK EQ_v1.001.fsm
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*The resonance behavior of the 'Lo Shelf HiQ' and 'Hi Shelf HiQ' (2-pole) filters are different from those in the Massenburg Plugin - at cutoff there is both a peak and a dip - the MDW has only a dip on the toe; no peak on the shoulder.

MDW shelf.jpg
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