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 Forum index » Clavia Nord Modular » G2 Building Blocks
Fixed Filter Bank
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3phase



Joined: Jul 27, 2004
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PostPosted: Fri Jan 12, 2007 7:24 am    Post subject: Fixed Filter Bank Reply with quote  Mark this post and the followings unread

I start really to agree that such a module must return in the G2 just because its so impossible and over expensiv to patch such a thing on the G2..
I also dont see the NM1 Filterbank as so bad sounding anymore...its really not too bad in relation to the amount of bands...

However..here is a minimal version that just needs around 20% ! oh oh... :-/

It still nowhere as steep as the Nm1 version and has less bands...but..
duo some phase changes in the circuit it gives a quite nice exciter fx...

I tried to tweek it for reasonable sound quality..and being related to the Nm1 filterbank to become a module in the patch converter...

However..if anybody has better tweaks for such a thing bring it up..just..
It should stay below 25 %...


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FixedFilterBank.pch2
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Fozzie



Joined: Jun 04, 2004
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PostPosted: Fri Jan 12, 2007 12:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

Wouldn't the approach described by Rob on his tutorial pages be cheaper? He describes a simple method for cascading filters. Or would this differ too much sonically?

This is a pic from his site showing the idea:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

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3phase



Joined: Jul 27, 2004
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PostPosted: Fri Jan 12, 2007 1:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

looks intersting... when tere is time i ve a look into that ..one day i patch something where no rob has been before Wink
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ian-s



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PostPosted: Fri Jan 12, 2007 2:11 pm    Post subject: Reply with quote  Mark this post and the followings unread

about 13% but it takes up so much space!


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Fozzie



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PostPosted: Fri Jan 12, 2007 2:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for trying it out G2Ian, I was typing with one hand and juggling my 3-months old in the other, so I couldn't do it myself Very Happy
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Funky40



Joined: Sep 24, 2005
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PostPosted: Thu Jan 25, 2007 5:26 am    Post subject: Reply with quote  Mark this post and the followings unread

Has anyone of the Experts tryed to build a Filterbank with 16 bands and steep angles ?

VA load is NO point. ( space also )

( sorry, i was never into building filterbanks, and since i used my G2 no more for a long time i hope you got maybe allready one patched. )


Is it possible to patch something with sonic qualitis near to the one in the spectralis ?
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Blue Hell
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PostPosted: Thu Jan 25, 2007 5:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Funky40 wrote:
Has anyone of the Experts tryed to build a Filterbank with 16 bands and steep angles ?


You can just expand Ian's one and then make the filters steeper and change the frequency settings to you likings.

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Funky40



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PostPosted: Thu Jan 25, 2007 5:41 am    Post subject: Reply with quote  Mark this post and the followings unread

oh thanks,

and how should i make the Volume of each Band CV controllable, with the AM module ?
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Blue Hell
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PostPosted: Thu Jan 25, 2007 6:02 am    Post subject: Reply with quote  Mark this post and the followings unread

Funky40 wrote:
and how should i make the Volume of each Band CV controllable, with the AM module ?


When you want to use control signals to dynamically alter the volumes you could do that yes, or use the Level/LevMult instead which probably is a bit cheaper.

When you just want static volumes you could chain another MixFader to the one already in the patch.

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Fozzie



Joined: Jun 04, 2004
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PostPosted: Thu Jan 25, 2007 6:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Funky40 wrote:
Has anyone of the Experts tryed to build a Filterbank with 16 bands and steep angles ?

VA load is NO point. ( space also )

( sorry, i was never into building filterbanks, and since i used my G2 no more for a long time i hope you got maybe allready one patched. )


Is it possible to patch something with sonic qualitis near to the one in the spectralis ?

Me no expert, but this is just a simple extension of Ians patch. No idea about the sonic qualities of the spectralis either. Let us know how it compares according to you.


edit: ah, I see Blue Hell proposed already what I patched up, well, at least you don't have to do it yourself then Smile . It's no rocket science anyway, but nice to play with. Also nice to use a couple of morphs on several overlapping sets of bands, for nice effects with a few knob turns. Trying out on a laptop/with the demo now, so I am curious how this sounds on the real thing with some audio going trough...


fixfilbank16B36dB.pch2
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fixed filterbank with 16 bands (frequencies set approx to doepfer a128 specs) and 36db cutoff slopes. Use keyboard or keyb tool to transpose sequence for auditioning.

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Funky40



Joined: Sep 24, 2005
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PostPosted: Thu Jan 25, 2007 11:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Blue Hell wrote:
or use the Level/LevMult instead which probably is a bit cheaper.


Yes, i gonna try,................................................... will get my first notebook this DAys, so its Time to reactivate my engine.



and thanks
( yes, when i have something to tell, i'll do )
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