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 Forum index » Clavia Nord Modular » NM Classic (NM1 or G1)
filter feedback patch
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Vader77



Joined: Nov 19, 2010
Posts: 40
Location: Death Star

PostPosted: Fri Sep 25, 2015 9:04 am    Post subject: filter feedback patch
Subject description: patch needed
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On my old AN1X I fond the filter feedback function very useful for fattening up the VCO sound and giving the tone a more analogue feel.

I seem to recall ages ago seeing some patch diagram somewhere to replicate this feature on the Nord Modular.

Does anyone have a link to the patch diagram or better still a preset for the patch itself?

cheers
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daksha



Joined: May 12, 2016
Posts: 7
Location: Italy

PostPosted: Thu May 12, 2016 12:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi! I have both the An1x & the NM G1, so I understand what you want to do...and I think is possible. The graph at pag. 69 in the AN1x manual shows the signal path...and shouldn't be so difficult to be implemented. Anyway, realizing it depends from the elements in the patch you are working on.


feedback.JPG
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An1x Feedback signal path.
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feedback.JPG


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daksha



Joined: May 12, 2016
Posts: 7
Location: Italy

PostPosted: Thu May 12, 2016 12:28 am    Post subject: Reply with quote  Mark this post and the followings unread

A mixer with a free input before the filter section should do the trick Wink
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lamptablecomputer



Joined: Jun 02, 2016
Posts: 12
Location: USA

PostPosted: Wed Jun 08, 2016 9:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

http://www.cim.mcgill.ca/~clark/nordmodularbook/nm_filters.html#analog

just dont forget the level inverter in the feedback path
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daksha



Joined: May 12, 2016
Posts: 7
Location: Italy

PostPosted: Thu Jun 09, 2016 12:23 am    Post subject: Reply with quote  Mark this post and the followings unread

lamptablecomputer wrote:
http://www.cim.mcgill.ca/~clark/nordmodularbook/nm_filters.html#analog

just dont forget the level inverter in the feedback path


Thanks a lot for the suggestion! As I'll be home I will try it...I'm an NM newbie, I was reading the suggested page and example but it doesn't explain why he used the inverter over the feedback signal...could you please in few words explain me the theory behind this? (I suspect there is a very common and basic rule behind this, but I started right now studying this things in detail)
Thanks again!

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lamptablecomputer



Joined: Jun 02, 2016
Posts: 12
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PostPosted: Thu Jun 09, 2016 12:30 am    Post subject: Reply with quote  Mark this post and the followings unread

Filters induce a phase shift, its just to correct this phase shift in the feedback path. Short answer is, if you dont put an inverter it wont work.
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daksha



Joined: May 12, 2016
Posts: 7
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PostPosted: Thu Jun 09, 2016 12:33 am    Post subject: Reply with quote  Mark this post and the followings unread

lamptablecomputer wrote:
Filters induce a phase shift, its just to correct this phase shift in the feedback path. Short answer is, if you dont put an inverter it wont work.


Thanks a lot Very Happy
I will try with my synth (and hears) as soon as I'll have the NM in front of me!

_________________
-Windows 8.1 Pro 64bit DAW (Asus P6T Deluxe V2 + Xeon W3670)
-Steinberg Cubase 8.5 64bit + Steinberg CC121 Controller
-Steinberg MR816 CSX + Behringer ADA8200
-MOTU MicroLite
-Virus TI2 P0lar
-Waldorf Pulse
-Roland Aira TB3
-Yamaha AN1x
-Clavia Nord Modular G1 Expanded
-Axoloti
-Maschine Mikro MK2
-Adam A7X with Nanopatch+

http://soundcloud.com/daksha
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daksha



Joined: May 12, 2016
Posts: 7
Location: Italy

PostPosted: Wed Jun 15, 2016 12:03 am    Post subject: Reply with quote  Mark this post and the followings unread

Well, I've tryed and am a bit perplex about results...with the inverted signal in feedback I have a kind of attenuation over the global signal, without inverter I have a stronger signal, more similar to the result with the An1x.
But it was late night, so maybe I did something wrong...I'll try today from scratch with a new patch.

_________________
-Windows 8.1 Pro 64bit DAW (Asus P6T Deluxe V2 + Xeon W3670)
-Steinberg Cubase 8.5 64bit + Steinberg CC121 Controller
-Steinberg MR816 CSX + Behringer ADA8200
-MOTU MicroLite
-Virus TI2 P0lar
-Waldorf Pulse
-Roland Aira TB3
-Yamaha AN1x
-Clavia Nord Modular G1 Expanded
-Axoloti
-Maschine Mikro MK2
-Adam A7X with Nanopatch+

http://soundcloud.com/daksha
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lamptablecomputer



Joined: Jun 02, 2016
Posts: 12
Location: USA

PostPosted: Wed Jun 15, 2016 10:26 am    Post subject: Reply with quote  Mark this post and the followings unread

daksha wrote:
Well, I've tryed and am a bit perplex about results...with the inverted signal in feedback I have a kind of attenuation over the global signal, without inverter I have a stronger signal, more similar to the result with the An1x.
But it was late night, so maybe I did something wrong...I'll try today from scratch with a new patch.


Oops, looks like it may be a flub on my part! Ive only made this patch with a clipping module in the feedback path to emulate "analog feel" and the phase shift is from the symmetrical clipping (duh) not the filter. Sorry for the confusion on my part.
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daksha



Joined: May 12, 2016
Posts: 7
Location: Italy

PostPosted: Thu Jun 16, 2016 11:46 pm    Post subject: Reply with quote  Mark this post and the followings unread

Very Happy Very Happy No problem at all !
Trials & errors are generally the biggest part of the game Wink

_________________
-Windows 8.1 Pro 64bit DAW (Asus P6T Deluxe V2 + Xeon W3670)
-Steinberg Cubase 8.5 64bit + Steinberg CC121 Controller
-Steinberg MR816 CSX + Behringer ADA8200
-MOTU MicroLite
-Virus TI2 P0lar
-Waldorf Pulse
-Roland Aira TB3
-Yamaha AN1x
-Clavia Nord Modular G1 Expanded
-Axoloti
-Maschine Mikro MK2
-Adam A7X with Nanopatch+

http://soundcloud.com/daksha
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