electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
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 
go to the radio page Live at electro-music.com radio 1 Please visit the chat
poster
 Forum index » Clavia Nord Modular » G2 Building Blocks
True octave phase-coherent drawbars generator
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [1 Post]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
Tim Kleinert



Joined: Mar 12, 2004
Posts: 1148
Location: Zürich, Switzerland
Audio files: 7
G2 patch files: 236

PostPosted: Tue Mar 13, 2012 7:07 pm    Post subject: True octave phase-coherent drawbars generator
Subject description: No more phase-cancelling
Reply with quote  Mark this post and the followings unread

Generating true octave-phase-coherent organ drawbars was one of the unsolved G2 problems.

I solved it today, as good as it probably can be solved. It combines the octave-phase-coherent oscillator concept I developed a year ago with a new scaling solution which enables it to drive a bank of 0Hz sine oscillators at the ratios required by the drawbars. There's a little bit of aliasing in the highest octave due to the osc driver running at control rate. Upsampling via extrapolation is quite costly, so I skipped that. It sounds good enough to me.

It's rather expensive DSP-wise anyway, so I almost posted it in the experimental section.

This is only the raw building block. I have absolutely no talent when it comes to making convincing organ emulations. Laughing But perhaps somebody wants try it out.

Nothing this red box can't do.

cheers,
t

EDIT: I sometimes get a strange rustling artefact on certain notes, which doesn't respond to any kind of treatment. Only reloading the patch helps, which makes me suspect that there is some kind of bug there. I've been running into such strange phenomena a lot lately when patching stuff that pushes the G2 to the limits.


TrueDrawbars_TK.pch2
 Description:
Octave-phase-coherent organ drawbars generator

Download
 Filename:  TrueDrawbars_TK.pch2
 Filesize:  5.27 KB
 Downloaded:  4151 Time(s)

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 [1 Post]
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 » G2 Building Blocks
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