electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
Help please! -64/+64 sweep on LFO isn't enough!
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [9 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
WhitePony64



Joined: Oct 23, 2010
Posts: 5
Location: Auckland, New Zealand

PostPosted: Sat Feb 05, 2011 7:56 pm    Post subject: Help please! -64/+64 sweep on LFO isn't enough!
Subject description: I can't create the right frequency sidebands with amplitude modulation.
Reply with quote  Mark this post and the followings unread

Hi all, this is my first time posting on this forum (or any forum that matter) so I'm not sure if I'm posting this in the right place or whatever but I hope you can forgive any n00bness of mine.

I'm reverse engineering some patches from my Korg R3 onto my G2 Engine with a little help from Blue Cat Audio's Frequency Analysis Multi plugin.

In the patch I'm copying there is LFO2 set at 1.88Hz (which I matched on the G2 with an LFO at 112 BPM). This LFO (LFO2) is modulating the amplitude of a sine wave. LFO2 is also having it's rate modulated by LFO1 (0.05Hz, 19.8s on the G2). The problem I'm facing is that the sidebands created on the G2 don't match the sidebands on the Korg R3 and sound inharmonic and wrong for what I'm trying to achieve.

I can achieve the right sidebands by having LFO2 at 149 BPM instead of 112 BPM but then that throws out the speed of the rest of the patch (I really need to get the sound as accurate as possible!).

Is there any way on the G2 I can speed up LFO2 with LFO1 a different way than the rate inputs as the -64/+64 swing isn't enough. Is there a way to link LFO rates to MIDI channels/CC#s or morphs groups? Or any other ways? Any help would be super appreciated.

Thank you!
Back to top
View user's profile Send private message Visit poster's website
ian-s



Joined: Apr 01, 2004
Posts: 2664
Location: Auckland, New Zealand
Audio files: 42
G2 patch files: 626

PostPosted: Sun Feb 06, 2011 12:11 pm    Post subject: Reply with quote  Mark this post and the followings unread

0.05Hz is 20sec. The Sub range on the lfo's has that exactly. If you need fine control, just patch your +-/64 through a mixer, set the mixer level to adjust range.
Look forward to hearing the patch when you are done Smile
Back to top
View user's profile Send private message
WhitePony64



Joined: Oct 23, 2010
Posts: 5
Location: Auckland, New Zealand

PostPosted: Sun Feb 06, 2011 7:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi, thanks for the reply!

I can't believe I overlooked 20s in the sub range! It has improved the overall contour of the LFO speed on the G2 when compared to the Korg R3 which is awesome but I still have the same problem regarding the maximum speed of the LFO (and the side bands it creates).

I can't use a mixer module to attenuate LFO1's signal as the problem is not too much modulation but too little. I need LFO2's rate to increase past the point it is when LFO1 (the LFO modulating LFO2's rate) reaches +64, however this is not possible through the rate input on LFO2 as it can't receive any value higher than +64 from a bipolar signal (any additional signal I patch in just makes it reach +64 faster but never surpasses that value).

I can create the right sidebands by manually changing the rate of LFO2 (from 112 BPM to 149 BPM) with my mouse as LFO1 reaches it's peak but this isn't really a solution. I don't really know how the MIDI modules in the G2 act within a patch and have tried to use them but to no avail. Do you know if it's possible to use MIDI and/or morph groups to increase the speed of LFO2 relative to LFO1 as if I was turning the knob with my mouse?

If there is no solution to this I suppose I'll just settle for making LFO2's rate 149 BPM but if anyone can think of a way around my predicament that would be awesome!

When I'm finished I can post a short clip of both the original R3 patch and the G2s copy for comparison.

Thanks!
Back to top
View user's profile Send private message Visit poster's website
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 23500
Location: The Netherlands, Enschede
Audio files: 262
G2 patch files: 320

PostPosted: Sun Feb 06, 2011 7:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

WhitePony64 wrote:
Do you know if it's possible to use MIDI and/or morph groups to increase the speed of LFO2 relative to LFO1 as if I was turning the knob with my mouse?


Yes, that can be done .. use a control send module, then associate a morph knob with some CC channel. The control send module should send to the slot the patch is in.

_________________
Jan
also .. could someone please turn down the thermostat a bit.
Posted Image, might have been reduced in size. Click Image to view fullscreen.
Back to top
View user's profile Send private message Visit poster's website
WhitePony64



Joined: Oct 23, 2010
Posts: 5
Location: Auckland, New Zealand

PostPosted: Sun Feb 06, 2011 8:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Blue Hell, I tried this before I posted but it didn't work and I still can't get it to work so I must be doing something wrong.

I have LFO1's output patched to the blue value input on a control send module.

I have the Ctrl selector at 104 and the channel selector at "This".

I have a morph group assigned to MIDI CC104.

I have assigned LFO2's rate knob to the appropriate morph group and set a broad range for modulation.

I must be missing something because it still isn't working. The only way I can get LFO2's rate to increase is by manually turning the morph group knob. Not even playing with the value knob on the Ctrl Send module changes anything.

Any ideas?

Thanks.
Back to top
View user's profile Send private message Visit poster's website
ian-s



Joined: Apr 01, 2004
Posts: 2664
Location: Auckland, New Zealand
Audio files: 42
G2 patch files: 626

PostPosted: Sun Feb 06, 2011 8:33 pm    Post subject: Reply with quote  Mark this post and the followings unread

WhitePony64 wrote:
Thanks Blue Hell, I tried this before I posted but it didn't work and I still can't get it to work so I must be doing something wrong.

I have LFO1's output patched to the blue value input on a control send module.

I have the Ctrl selector at 104 and the channel selector at "This".

I have a morph group assigned to MIDI CC104.

I have assigned LFO2's rate knob to the appropriate morph group and set a broad range for modulation.

I must be missing something because it still isn't working. The only way I can get LFO2's rate to increase is by manually turning the morph group knob. Not even playing with the value knob on the Ctrl Send module changes anything.

Any ideas?

Thanks.


The 'this' channel is the gotcha. It only works with external midi. You have to set the channel selector to SlotA (or whatever slot the patch is loaded) I'll post an example soon.

Last edited by ian-s on Sun Feb 06, 2011 8:44 pm; edited 1 time in total
Back to top
View user's profile Send private message
ian-s



Joined: Apr 01, 2004
Posts: 2664
Location: Auckland, New Zealand
Audio files: 42
G2 patch files: 626

PostPosted: Sun Feb 06, 2011 8:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

here is the sample, only works in slot A


sample-midimod.pch2
 Description:

Download
 Filename:  sample-midimod.pch2
 Filesize:  1.11 KB
 Downloaded:  3898 Time(s)

Back to top
View user's profile Send private message
WhitePony64



Joined: Oct 23, 2010
Posts: 5
Location: Auckland, New Zealand

PostPosted: Sun Feb 06, 2011 9:24 pm    Post subject: Reply with quote  Mark this post and the followings unread

Cool, thank you both for your help!

I'll play around with that patch for a bit.

Cheers!
Back to top
View user's profile Send private message Visit poster's website
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 23500
Location: The Netherlands, Enschede
Audio files: 262
G2 patch files: 320

PostPosted: Mon Feb 07, 2011 6:59 am    Post subject: Reply with quote  Mark this post and the followings unread

WhitePony64 wrote:
the channel selector at "This".


Laughing sorry .. should have warned to not use that one, glad it got solved!

_________________
Jan
also .. could someone please turn down the thermostat a bit.
Posted Image, might have been reduced in size. Click Image to view fullscreen.
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [9 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use