more on l-systems

R Walker wrote:

>One of the FTS additions of a fibonacci tonescape was originally inspired
>by it if I remember rightly - idea is you go up or down in pitch, with
>the
>ratio varying depending on whether it is an L or S beat.
>E.g. L = 10/11 and S = 7/6 works for the normal fibonacci rhythm.
>FTS works out which ratio will be good for the S when you type in the
>one for the L, or vice versa.

If I read you correctly, you're saying that you're deriving pitch from
rhythm? If so, that's the opposite of what I Was doing, well, not even
the opposite exactly. (Though you're idea is probably more unusual
in fact).

Like I said, my thing is based on building a neighbour-formation (or
several) around each note of the scale. And then, building formations
around those neighbour-notes, and so on. The formations are made of
random fragments of the given scale, so they're "sort of" fractal. The
number of formations around a given note is also random.

So, this is a fixed out-of-time structure. In a way, it's like
generating an insanely complex raga. It generates rules of
ornamentation, if you will, that probably no human could memorize. (Of
course, it lacks many of the other subtle rules that come with a raga,
such as playing manner, sliding in and out of tones, etc. etc.)

So you've got this out-of-time structure. Then, the improvisor comes
along and plays in the scale, sometimes venturing into the neighbour
"tree", sometimes not, and when it does, will it go deeper into yet
another neighbor-formation? maybe, maybe not. It's all random
decisions, though the material is based on the scale you originally give
it.

So the rhythm is based on the pitch in this, in the sense that the
"deeper" you go into the tree, the faster the notes.

>
>
>The ratios need to be exactly right, worked out from the proportions of
>L and S beats in the rhythm, or else the tune rapidly moves down
>or up in pitch (would yours do that if it went on for long enough?)

No, it's a closed system of pitches.

Pins cannot connect due to not supporting the same transport.
(Error=80040266)
This is the error i get when trying to access my tests.

Pat Pagano, Director
South East Just Intonation Society
http://indians.australians.com/meherbaba/
http://www.screwmusicforever.com/SHREESWIFT/
----- Original Message -----
From: Christopher Bailey <cb202@columbia.edu>
To: <tuning@yahoogroups.com>
Sent: Tuesday, January 30, 2001 11:25 PM
Subject: [tuning] more on l-systems

>
> R Walker wrote:
>
> >One of the FTS additions of a fibonacci tonescape was originally inspired
> >by it if I remember rightly - idea is you go up or down in pitch, with
> >the
> >ratio varying depending on whether it is an L or S beat.
> >E.g. L = 10/11 and S = 7/6 works for the normal fibonacci rhythm.
> >FTS works out which ratio will be good for the S when you type in the
> >one for the L, or vice versa.
>
> If I read you correctly, you're saying that you're deriving pitch from
> rhythm? If so, that's the opposite of what I Was doing, well, not even
> the opposite exactly. (Though you're idea is probably more unusual
> in fact).
>
> Like I said, my thing is based on building a neighbour-formation (or
> several) around each note of the scale. And then, building formations
> around those neighbour-notes, and so on. The formations are made of
> random fragments of the given scale, so they're "sort of" fractal. The
> number of formations around a given note is also random.
>
> So, this is a fixed out-of-time structure. In a way, it's like
> generating an insanely complex raga. It generates rules of
> ornamentation, if you will, that probably no human could memorize. (Of
> course, it lacks many of the other subtle rules that come with a raga,
> such as playing manner, sliding in and out of tones, etc. etc.)
>
> So you've got this out-of-time structure. Then, the improvisor comes
> along and plays in the scale, sometimes venturing into the neighbour
> "tree", sometimes not, and when it does, will it go deeper into yet
> another neighbor-formation? maybe, maybe not. It's all random
> decisions, though the material is based on the scale you originally give
> it.
>
> So the rhythm is based on the pitch in this, in the sense that the
> "deeper" you go into the tree, the faster the notes.
>
> >
> >
> >The ratios need to be exactly right, worked out from the proportions of
> >L and S beats in the rhythm, or else the tune rapidly moves down
> >or up in pitch (would yours do that if it went on for long enough?)
>
> No, it's a closed system of pitches.
>
>
>
>
> You do not need web access to participate. You may subscribe through
> email. Send an empty email to one of these addresses:
> tuning-subscribe@egroups.com - join the tuning group.
> tuning-unsubscribe@egroups.com - unsubscribe from the tuning group.
> tuning-nomail@egroups.com - put your email message delivery on hold for
the tuning group.
> tuning-digest@egroups.com - change your subscription to daily digest
mode.
> tuning-normal@egroups.com - change your subscription to individual
emails.
>
>
>