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 » G2 Building Blocks
Quadrature Oscillator
Post new topic   Reply to topic Moderators: Nord Modular Editors
Page 1 of 1 [4 Posts]
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: 1038
Location: Zürich, Switzerland
Audio files: 6
G2 patch files: 213

PostPosted: Mon Mar 26, 2012 1:36 pm    Post subject: Quadrature Oscillator
Subject description: 0, 90, 180 and 270 outputs
Reply with quote  Mark this post and the followings unread

After reading this thread, I thought I'd try another shot at quadrature oscillators.

This solution is simple, multiplexing a single PhaseOsc. The outputs are 48kHz, but the oscillator will respond faithfully to sync and exponential FM.

EDIT: I forgot to copy the patch to all variations. Be careful.

EDIT 2: I have to specify: If the response to expFM and sync should be 100% accurate, you'll have to downsample the FM or sync source down to 48k. This takes a mere S/H module clocked by the 48k clock which is already there (the feedbacked audiorate inverter module). Syncing to or modulating by blue signals works without this precaution, because these clock at 24k.


QuadratureOsc TK.pch2
 Description:
0, 90, 180 and 270 degrees outputs

Download
 Filename:  QuadratureOsc TK.pch2
 Filesize:  1021 Bytes
 Downloaded:  383 Time(s)

Back to top
View user's profile Send private message
ian-s



Joined: Apr 01, 2004
Posts: 2576
Location: Auckland, New Zealand
Audio files: 42
G2 patch files: 609

PostPosted: Tue Mar 27, 2012 12:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

Great idea Tim

Works very well. Lots of possibilities.
Back to top
View user's profile Send private message
iPassenger



Joined: Jan 27, 2007
Posts: 1051
Location: Sheffield, UK
Audio files: 5
G2 patch files: 78

PostPosted: Tue Mar 27, 2012 1:50 pm    Post subject: Reply with quote  Mark this post and the followings unread

Oh i get it, it is as if the FM causes the osc phase to be in two places at once but the sample and holds determine which location is listened to.. smart! Was looking at for ages wondering how it was doing it! Cheers. Smile Course this would work with lfos at the 24bit rate.
_________________
iP (Ross)
- http://ipassenger.bandcamp.com
- http://soundcloud.com/ipassenger
Back to top
View user's profile Send private message Visit poster's website
Tim Kleinert



Joined: Mar 12, 2004
Posts: 1038
Location: Zürich, Switzerland
Audio files: 6
G2 patch files: 213

PostPosted: Tue Mar 27, 2012 2:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

Cheers. Smile Multiplexing is your friend. The only limitation is the sample frequency you need at the outputs. I could wring 16 different phase outputs @ 12k from just one oscillator. In one of my granular patches, I squeezed 8 delay taps @48k out of a 4-tap delay. The G2 audio rate is quite high (96k), so multiplexing/downsampling is often a workable solution.
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 [4 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 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
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