Euclidean polyrhythm sequencers - DIY + New intellijel

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Tombola
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Euclidean polyrhythm sequencers - DIY + New intellijel

Post by Tombola » Mon Oct 03, 2011 12:57 pm

Hi, sorry for posting a DIY project here, but I thought people might enjoy it. It's a Euclidean Polyrhythm Sequencer

I'll let Ruin & Wesen explain Euclidean Rhythms: "Last week, I stumbled upon the amazing paper by Godfried Toussaint called The Euclidean Algorithm Generates Traditional Musical Rhythms, which shows how the euclidean algorithm used for example for timing systems in neutron accelerators can generate most of the traditional european and african rhythms. It is about distributing a set amount of pulses (which Godfried calls n) over a discrete amount of timing intervals (called k)."

If you're interested, there's a nice flash app that lets you play with Euclidean Rhythms here.

My module takes incoming clock and outputs 3 channels of pulses, with two encoders to set n & k for each channel. In the demo, the bottom channel is driving a sequencer, and the top two channels are driving kick/snare percussive sounds directly.

It's built around an arduino. Happy to answer any questions!

[video][/video]
Last edited by Tombola on Tue Oct 04, 2011 4:34 pm, edited 2 times in total.

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Bacchus
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Post by Bacchus » Mon Oct 03, 2011 1:05 pm

Awesome stuff! Will you be posting some more details about the build/software? I'd love to make one myself.

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Synesthesia
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Post by Synesthesia » Mon Oct 03, 2011 1:10 pm

Euclidean Rythm!

Super Nice ! do you have your project documented somewhere ?

Was looking into that a while back .. after a couple of awesome articles:

This one !

http://createdigitalmusic.com/2011/03/c ... and-round/

this one pretty good ;)

http://createdigitalmusic.com/2011/03/e ... -operator/

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Post by sgnhh » Mon Oct 03, 2011 1:13 pm

waaaaaaaant

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zvukoprocessor
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Post by zvukoprocessor » Mon Oct 03, 2011 1:14 pm

Tombola, this is brilliant!

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regenbot
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Post by regenbot » Mon Oct 03, 2011 1:16 pm

looks, great :hail:

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jenamu6
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Post by jenamu6 » Mon Oct 03, 2011 1:20 pm

Nice ....more blinkieblinks :yay: :yay: :yay: :hail: :hail:

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qu.one
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Post by qu.one » Mon Oct 03, 2011 1:21 pm

Adding CV over the pot controls would bring it to a whole new level. Are the patterns generated predetermined? Could they be changed via updating?
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shred
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Post by shred » Mon Oct 03, 2011 1:22 pm

:yay: very cool
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clarke68
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Post by clarke68 » Mon Oct 03, 2011 1:41 pm

Really cool!

That groove sounds organic and funky as all get out. Would definitely be interested in learning more...is the brains behind the whole thing an app you wrote for the ardiuno? Not sure if "app" is even the right word, but anyway I mean "something you could post that we could use without needing to know how to program"?

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intellijel
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Post by intellijel » Mon Oct 03, 2011 1:49 pm

I had this concept for an algorithmic beat generator module that involved three channels of the same Euclidian algorithm for generating polyrhythms.
I have also tested this on arduino and it works great.

My implementation lets you set large numbers using the segemted display so that something like 100 slots with 7 beats spread over them would be possible.
The slip control allows you to slip the sequence forward or backwards relative to the other sequences.

I really like on your implementation the use of the led matrix display, makes it fun to watch!

Image[/img]

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aethersprite
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Post by aethersprite » Mon Oct 03, 2011 1:58 pm

This is getting crazy... :lol:

I want both :despair:

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Post by Veqtor » Mon Oct 03, 2011 2:10 pm

intellijel wrote: Image
OMFG

:hail: :hail: :hail: :hail: :hail: :party: :party: :party: :party: :sb: :sb: :sb: :sb: :sb: :sb:

GIVE ME NOWWWW

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mark_snipz
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Post by mark_snipz » Mon Oct 03, 2011 2:12 pm

Blinkin' nice!!!

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zvukoprocessor
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Post by zvukoprocessor » Mon Oct 03, 2011 2:13 pm

intellijel wrote: Image[/img]
intellijel :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail: :hail:

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Post by neilbaldwin » Mon Oct 03, 2011 2:20 pm

I would sell at least one of my arms for that intellijel one!

:love: :hail:

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apemandan
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Post by apemandan » Mon Oct 03, 2011 2:22 pm

wow! both very cool..Tombola, how difficult is this build?

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Post by bodo » Mon Oct 03, 2011 2:27 pm

Both look really incredible! We need more modules like these :tu:

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Jaspo
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Post by Jaspo » Mon Oct 03, 2011 2:32 pm

Great post .. thanks for sharing

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Post by l e b e r » Mon Oct 03, 2011 2:35 pm

cor blimey! :woah:

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neilbaldwin
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Post by neilbaldwin » Mon Oct 03, 2011 2:43 pm

I'm like john turturro in this clip:

[video][/video]

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Tombola
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Post by Tombola » Mon Oct 03, 2011 2:57 pm

qu.one wrote:Adding CV over the pot controls would bring it to a whole new level. Are the patterns generated predetermined? Could they be changed via updating?
Yes, there's a spare analog in waiting for me to get round to experimenting with CV control. The patterns are algorithmically created from the two knob positions.

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Tombola
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Post by Tombola » Mon Oct 03, 2011 3:00 pm

jenamu6 wrote:Nice ....more blinkieblinks :yay: :yay: :yay: :hail: :hail:
Yes, my design process was a little bit "I have a matrix, what can I do with it?"

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Post by robotfunk » Mon Oct 03, 2011 3:03 pm

This is exactly how I've been programming my rhythms for the last 20 years... now an algorithm does the same job, great... I want one nonetheless :)

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Tombola
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Post by Tombola » Mon Oct 03, 2011 3:05 pm

apemandan wrote:wow! both very cool..Tombola, how difficult is this build?
It's fiddly on perfboard, but basically simple - the arduino ucontroller, a chip to drive the matrix, 3 x encoders, and a few digital outs.

Most of the time was coding and debugging - one of the encoders still doesn't work properly.

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