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 » NM Classic (NM1 or G1)
How to use pitch bend as a modulation source?
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [6 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
Tusker



Joined: Feb 03, 2005
Posts: 110
Location: Texas

PostPosted: Thu Dec 15, 2005 4:03 am    Post subject: How to use pitch bend as a modulation source? Reply with quote  Mark this post and the followings unread

I'm trying to use pitch bend as a modulation source. When doing leads I like to modulate pulse-width or fm based on how much bend is applied to the sound. But I couldn't find a way to do it. If you look at the attached patch, I have tried to isolate the pitch bend info by subtracting the latest note output of the Keyboard Patch module from the note output of the Keyboard voice module. Of course the difference between latest note and note is the source of the problem.

The problem arises when I play legato and one of the Keyboard modules updates information while the other doesn't. Modulation difference based on legato versus detache style is a nice random effect but not something I want corrupting my efforts at using pitch bend as a mod source.

I can't imagine I'm the first person wanting to do this. Any tips?

Thanks,

Jerry


Pitchbend.pch
 Description:
Patch to use pitch bend info as a mod source.

Download
 Filename:  Pitchbend.pch
 Filesize:  1.05 KB
 Downloaded:  74 Time(s)

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



Joined: Feb 19, 2005
Posts: 288
Location: Italy
Audio files: 4
G2 patch files: 28

PostPosted: Thu Dec 15, 2005 6:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi Jerry,
I don't have the NM Editor here at work, but it doesn't let you assign pitch bend as morph source? I have to check this out this evening.

cheers,
Luca

_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen. Posted Image, might have been reduced in size. Click Image to view fullscreen.
Back to top
View user's profile Send private message
Tusker



Joined: Feb 03, 2005
Posts: 110
Location: Texas

PostPosted: Thu Dec 15, 2005 8:07 am    Post subject: Reply with quote  Mark this post and the followings unread

Luca, thanks for your response. No, it doesn't as far as I can tell. I thought that the two primary input modules measure pitch post-bend and pre-bend and thus the difference between them would give me a value for pitch bend ... but that doesn't seem to be the case.

I'd be interested to see how the G2 treats pitch bend.

It's got me stumped.

Jerry
Back to top
View user's profile Send private message
davep



Joined: Jul 05, 2004
Posts: 467
Location: Oakland, CA
Audio files: 10
G2 patch files: 73

PostPosted: Thu Dec 15, 2005 2:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yeah, the problem is that on the NM1, the NOTE output on the KYBD module is not just note data, it also has the pitch bend data added to it already. You need to send note info to the oscs without the pitch bend data, and pitch bend data to a PWM input without the note data.

Maybe something like this -

To isolate the note data for the oscs (removing the pitch bend info), run the KYBD NOTE signal through a note quantizer module and patch this quantized signal to the oscs pitch input (remember to turn off the oscs' KYBD TRACK button).

Now, to isolate the pitch bend data for the PWM, use a control mixer to combine an inverted version of this quantized note signal with the direct KYBD NOTE output. This should cause the note signals to cancel out, leaving only the pitch bend data for use as a control signal. Waddaya think?

I was very glad to see this addressed on the G2, which has two outputs on the KYBD module, one for note only, one for note + pitch bend, and it also has a separate "Device" module for direct access to the signals from the mod wheel, pitch bend, aftertouch, pedals, and the extra wheels on the G2X.

_________________
Dave Peck
Back to top
View user's profile Send private message
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20480
Location: The Netherlands, Enschede
Audio files: 147
G2 patch files: 318

PostPosted: Thu Dec 15, 2005 2:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

Found a patch that implements Dave's idea.


BendExtract.pch
 Description:
Pitch bend extraction

Download
 Filename:  BendExtract.pch
 Filesize:  1.09 KB
 Downloaded:  90 Time(s)


_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Tusker



Joined: Feb 03, 2005
Posts: 110
Location: Texas

PostPosted: Fri Dec 16, 2005 3:33 am    Post subject: Reply with quote  Mark this post and the followings unread

Well, what can I say, but that I'm grateful. At first I got hung up on the fact that this "limits me" to a semitone pitch bend ... but then my brain started working again, and I realized that this controller signal can be added/subtracted to anything ... including pitch. Cool

This also solves another problem I had been wrestling with: How to have assymetric pitch bends (one octave downward, 2 semitones up). Now that the signal is isolated, it should be simple logic to split the upward value from the downward value. The only issue I'm still confronting, is how to prevent that click at the extreme end of the pitch bend, when the logic resets. Hum, maybe buy a G2?

You guys have really empowered this machine for me. Dave, thanks for the heads up about the G2. I'm sure it's much more convenient. It's nice to know there's a way to do it on the NM1 also.

Cheers,

Jerry
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [6 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 » NM Classic (NM1 or G1)
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
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


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