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 » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
Lunetta Noodles
Post new topic   Reply to topic Moderators: mosc
Page 1 of 1 [5 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
synaesthesia



Joined: May 27, 2014
Posts: 162
Location: Germany
Audio files: 66

PostPosted: Mon Jan 19, 2015 3:16 pm    Post subject: Lunetta Noodles
Subject description: simple Lunetta-style noodle soup
Reply with quote  Mark this post and the followings unread

After spending some time in other forums on this site I learned that a noodle, in the context of synthesizers, refers to a patch that generates a tune without human interaction. No doubt, this can be done with Lunettas too. With the remainders of the 4049 DCO circuit on the breadboard, and also a simple VCF that I experimented with, I put together this circuit. It consists of two 4049 sawtooth oscillators that generate a low frequency for the tempo (upper part) and a high frequency for the tone (lower part). The nice thing with the 4049UBE oscillators is that they also generate a pulse. The pulse of the LFO sawtooth oscillator is used to momentarily enable two 4015 counters to count the pulses coming from the tone oscillator. The output of each counter then in turn changes the frequency of the oscillators using a control voltage generated by the connected resistor network. This results in a pseudo-random sequence of tones with varying lengths.

Because the pulse from the LFO was a bit too long, I ran it through R11+C1 to shorten it. The 4015 enable input seems tolerant enough to handle the spikes. With the R+C values in the schematic I haven't observed the circuit to get stuck in a sequence yet, although that is certainly possible. With longer enable pulses I observed that a few times.

In my first attempt I tried to use separate enable pulses with different length for each counter, but that didn't seem to be necessary. So a common enable pulse is used here. A reset button could be added to make sure that the two counter do not stay in sync. Also, the outputs from the counters could be swapped (even across counters) to make the sequence appear even more random.

I then ran the output of the tone oscillator through the VCF, just because it was still on the breadboard, and used the LFO sawtooth output as a control voltage for the VCF. The circuit works fine without the VCF, but it sounds so much better with it. Voila, a nice simple noodle soup with a bit of CMOS, linear CMOS and an op-amp. No breakthrough in synthesizer noodle science, but too good to be removed from the breadboard without sharing it before.


JumpNoodle.PNG
 Description:
 Filesize:  30.32 KB
 Viewed:  70 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

JumpNoodle.PNG



JumpNoodle.mp3
 Description:

Download
 Filename:  JumpNoodle.mp3
 Filesize:  607.11 KB
 Downloaded:  97 Time(s)

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


Joined: Apr 03, 2004
Posts: 20994
Location: The Netherlands, Enschede
Audio files: 158
G2 patch files: 319

PostPosted: Tue Jan 20, 2015 9:46 am    Post subject: Reply with quote  Mark this post and the followings unread

:-) nice
_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
PHOBoS



Joined: Jan 14, 2010
Posts: 2190
Location: Moon Base
Audio files: 412

PostPosted: Tue Jan 20, 2015 11:40 am    Post subject: Reply with quote  Mark this post and the followings unread

tasty Very Happy


Schrödinger's cat jumps the noodle.mp3
 Description:
I couldn't resist

Download
 Filename:  Schrödinger's cat jumps the noodle.mp3
 Filesize:  606 KB
 Downloaded:  71 Time(s)


_________________
"My perf, it's full of holes!"
http://phobos.000space.com/ http://www.acidtrash.com/ Stickney Synthyards
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20994
Location: The Netherlands, Enschede
Audio files: 158
G2 patch files: 319

PostPosted: Tue Jan 20, 2015 1:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

:-)
_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
synaesthesia



Joined: May 27, 2014
Posts: 162
Location: Germany
Audio files: 66

PostPosted: Tue Jan 20, 2015 1:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

Laughing let's add a disclaimer: "No animals were harmed during the production of this remix".
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: mosc
Page 1 of 1 [5 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
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