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 
Live streaming at radio.electro-music.com

  host / artist show at your time
  Jez Adventures in Sound
Please visit the chat
 Forum index » Clavia Nord Modular » G2 Patches - Experimental
LFSR
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [2 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
ian-s



Joined: Apr 01, 2004
Posts: 2574
Location: Auckland, New Zealand
Audio files: 42
G2 patch files: 608

PostPosted: Fri Apr 09, 2004 5:29 am    Post subject: LFSR Reply with quote  Mark this post and the followings unread

Hi all

This is not a complete noodle, just an illustration of an automated, pseudorandom control element, shown in yellow. It is a Linear Feedback Shift Register (LFSR) of the Fibonacci variety. The XOR gates act as binary adders in a four tap feedback loop. The position of the taps is arbitrary but for maximum non-repeating length, use an even number of prime numbered taps. The four input mixer is being used as a D2A, its cheaper DSP wise, than the actual D2A module and allows tweaking the binary weights (in this case, intervals between notes). Outputs of the network are also used for some rhythmic elements and if desired, could be fed back into the clock frequency or used in switches to dynamically change tap points etc etc.
I am not an ex NM Classic user so please forgive me if I am going over old ground.
BTW, I like the term 'noodle', although finding out the dictionary meaning was 'a musical improvisation' was a little disappointing (sort of spoilt the image). Back in the 70's, I used to call them 'autopatches', not very imaginative.


lfsr.pch2
 Description:
less random noodle control element example.

Download
 Filename:  lfsr.pch2
 Filesize:  2.7 KB
 Downloaded:  1003 Time(s)

Back to top
View user's profile Send private message
mosc
Site Admin


Joined: Jan 31, 2003
Posts: 17606
Location: Allentown, PA
Audio files: 124
G2 patch files: 60

PostPosted: Fri Apr 09, 2004 8:00 am    Post subject: Reply with quote  Mark this post and the followings unread

Well, I like this. I can almost understand it. I used to play around, in the seventies, with Lunetta synthesizers. These were simple TTL circuits brought out to a front panel with banana jacks. These were binary up/down counters, shift registers (8bit), and modulo N dividers mostly. There were a few square wave oscillators. Lot's of fun. This is in the same vein, it seems.

Thanks for posting this.
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address
Display posts from previous:   
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [2 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 » G2 Patches - Experimental
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