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 Forum index » Clavia Nord Modular » G2 Patches - Experimental
G2 and low level DSP
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ik



Joined: Jan 30, 2005
Posts: 50
Location: North Carolina
G2 patch files: 25

PostPosted: Sun Jan 30, 2005 7:25 am    Post subject: G2 and low level DSP Reply with quote  Mark this post and the followings unread

Hi!
My name is Istvan Kaldor, .... I am a 'silent reader' of this forum for a while ....
See attached file ...
This is an experiment of porting a 12 db resonant LPF from SynC Modular.
Seems to work, I didn't know if it is possible to build your own filters for the G2 by low level DSP, ... really cool .....
(note: Sorry, I don't know how does the filter works, I just ported. Smile)
ik.


2pol LP 12db.pch2
 Description:
12db resonant LPF ported from Sync Modular.

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 Filename:  2pol LP 12db.pch2
 Filesize:  1.31 KB
 Downloaded:  736 Time(s)

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mosc
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Joined: Jan 31, 2003
Posts: 17618
Location: Allentown, PA
Audio files: 125
G2 patch files: 60

PostPosted: Sun Jan 30, 2005 10:16 am    Post subject: Reply with quote  Mark this post and the followings unread

welcome ik. Glad you decided to climb out of the woodwork...

This is really cool. Not only does this filter sound great, but you made it pretty much out of multipliers and mixer module. Can you explain how this works? Did you start with a formula or something?

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ik



Joined: Jan 30, 2005
Posts: 50
Location: North Carolina
G2 patch files: 25

PostPosted: Sun Jan 30, 2005 11:19 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
Did you start with a formula or something?


Here is the original SynC Modular "source code" Very Happy .
See image attached.
I am not a DSP guru but one could relay back from the image to the original C++ code. (I'll check the archive, it is probably not too difficult to figure out.)
This is really neat since it looks like one could build any (??) desired filters, OSCs ... (??) from the original C++ codes in the G2.

ik.


12 db filter SM.jpg
 Description:
Original SynC Modular 2pol LPF image.
 Filesize:  26.2 KB
 Viewed:  4590 Time(s)

12 db filter SM.jpg


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ian-s



Joined: Apr 01, 2004
Posts: 2575
Location: Auckland, New Zealand
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PostPosted: Sun Jan 30, 2005 12:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

This is brilliant. The Z-1 (1 sample delay) modules are not required because of the 1 sample feedback delay in the mixers.
A ShpStatic (4th shape) on the Frequency input exponentialises the response quite well.
Must dig out my sync-c Stilson filter.
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ik



Joined: Jan 30, 2005
Posts: 50
Location: North Carolina
G2 patch files: 25

PostPosted: Sun Jan 30, 2005 12:34 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
The Z-1 (1 sample delay) modules are not required ...


First, I tried to stick delays into the feedback loops, then I found out
no need for those. I wondered why... Very Happy

So, The G2 mixers could be used as Z-1 modules? ... A .... ha.

BTW. SynC Modular has more then enough material (filters, OSCs .... ) to port. ... Smile
ik.
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cebec



Joined: Apr 19, 2004
Posts: 1064
Location: Virginia
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G2 patch files: 31

PostPosted: Sun Jan 30, 2005 1:11 pm    Post subject: Reply with quote  Mark this post and the followings unread

Shocked

An entire project unto itself! What an amazing revelation, here...
I hope this takes off as I'm eager to learn these very principles.
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Roland Kuit



Joined: Sep 29, 2003
Posts: 1091
Location: The Netherlands/Sweden
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PostPosted: Sun Jan 30, 2005 2:26 pm    Post subject: G2 and low level DSP Reply with quote  Mark this post and the followings unread

Idea
Nice work iK

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ik



Joined: Jan 30, 2005
Posts: 50
Location: North Carolina
G2 patch files: 25

PostPosted: Sun Jan 30, 2005 5:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Sorry Sad , ... the previous file had the wrong output.
Here is the corrected one. LP/BP/HP outputs added.
ik.


2pol filter from SynC Modular.pch2
 Description:
12db LP/BP/HP filter, ported from SynC Modular.

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 Filename:  2pol filter from SynC Modular.pch2
 Filesize:  1.44 KB
 Downloaded:  730 Time(s)

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zynthetix



Joined: Jun 12, 2003
Posts: 838
Location: nyc
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G2 patch files: 13

PostPosted: Sun Jan 30, 2005 10:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

hello Very Happy this is a neat experiment. I'm glad you are not lurking (silent reading), I for one appreciate your insight.
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