sepra is a probability-based generative MIDI step sequencer with 4 voices.

kevin — Sat, 31 May 2008 20:12:42 +0000

sepra is a probability-based generative MIDI step sequencer with 4 voices.
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information about the interface and the latest updates will be posted to http://docs.monome.org/doku.php?id=app:sepra
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this entry just hosts the first version.
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there is also a video tutorial here: http://www.vimeo.com/359147

kevin — Wed, 12 Dec 2007 23:31:11 +0000

there is also a video tutorial here: http://www.vimeo.com/359147

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sepra is a four voice, 16-step, probability-based composer.

kevin — Tue, 23 Oct 2007 17:47:40 +0000

sepra is a four voice, 16-step, probability-based composer.

[[insert attached sepra beta]]

and you'll need Lobjects if you don't already have them. http://arts.ucsc.edu/EMS/Music/research/Lobjects.readme.html

the interface is designed for the 40h and is fairly complex. it's best described graphically with a legend, and it's easiest to use with thin strips of appropriately placed tape.

prefix is /box

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the layout:
[[insert picture of sepra layout]]

the *green* and *red* squares in the corners are edit toggles for each of the voices. the buttons in the green square toggle edit pages for the step sequencer and the pitch class set. the red square is for editing probabilities.

the *yellow* square in the middle is a voice output toggle. if all of these are off, you won't get any midi data.

the *dark blue* ring is a circular step sequencer, which progresses as shown by the text.

the *black* ring defines a pitch class set. each voice has its own pitch class set and its own rhythm, as defined by the step sequencer.

the *light blue* +/- buttons change which pitch class & probability structure the sequences are associated with. this is kindof like decoupling. the one on top corresponds to voice 1, right to voice 2, bottom to 3, and left to 4. increment is always up or right. the current assignment is displayed in binary offset by -1. each voice defaults to its own pitch class set.

the buttons with the *white* background increase or decrease the probability of a pitch class coming through as a note, depending on which orange button (the ones with arrows) is lit. pressing any of these while the right button with the up arrow is lit will increase that pitch class' probability. with the left button lit up, they will decrease.

the *grey* buttons along the diagonal don't do anything right now, but i was thinking they'd be preset scrollers or something. next and previous on the left and right.

that seems like everything. post to the forum with any questions. use your favorite synth.
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monome wiki app (max/msp) sepra beta

sepra is a probability-based generative MIDI step sequencer with 4 voices.

there is also a video tutorial here: http://www.vimeo.com/359147

sepra is a four voice, 16-step, probability-based composer.