[sdiy] Samchillian Anyone?

Thomas Strathmann thomas at pdp7.org
Sun Oct 10 17:55:13 CEST 2010


On 10/10/10 17:06 , Scott Nordlund wrote:
> I'd posted a little about this before in context of algorithmic music.
> You can generate interesting melodies and chord progressions from a
> repeating sequence of increments, I think it's conceptually somewhere
> between circle of fifths and serialism.  It works better for different
> scales (i.e. 19 TET) since you'll only iterate through the entire
> 12 TET chromatic scale if the total sequence transposes by either 1,
> 5, 7 or 11 semitones, where as 19 TET can make a "circle of anything"
> since it's prime.  I've done this manually but it's very tedious.

So you basically say that the increments and the number of semitones 
must be coprime unless the number of semitones is a prime number, thus 
resulting in a finite semigroup or what do you mean by "circle of anything"?

	Thomas



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