[PD] how to make a proportional canon
libero.mureddu at gmail.com
Tue Jul 10 18:19:25 CEST 2007
thanks for your answer,
I´m already trying an implementation with coll, my problem is that I cannot
store the notes in advance, being the piece in real time. so I´m trying to
store in a coll the notes with an augmented distance between them, and then
(with a certain delay, decided in advance), playing them back.
I´ll send the patch to the list when it will be a bit better looking!
On 7/10/07, Derek Holzer <derek at umatic.nl> wrote:
> Is the ratio consistent? Or does it change frequently during the piece.
> My only experience with canon's is with one of Brian Eno's tape pieces
> using Pachelbel's Canon, where he feeds notes into a tape loop which can
> be played back at slower than real time. So, in the spirit of tape
> loops, and especially if the ratio is consistent, why not write your
> incoming notes into a circular table, which gets played back at a
> proportionate reduction of speed?
> Sorry I don't have time to patch that idea up right now, but maybe it
> will be enough of a shift from your current line of thinking on the
> problem to get you moving in a new direction...
> Libero Mureddu wrote:
> > Hello,
> > I´m trying to implement a patch to play proportional canons in real time
> > from a midi source.
> > A proportional canon works in this way: if I play, let´s say, three
> > notes at 200ms of speed, and if I decide that the proportion should be 2
> > times slower, the patch should playback the same three notes at 400ms
> > speed.
> > I thought I could record the distance between notes with timer, and then
> > send the time difference (multiplied by a certain factor), to pipe, but
> > it seems that pipe cannot handle the change of delay time, if more than
> > one change in delay has to be stored before playing back the previous.
> > Do you have any suggestion?
> > In other words, what I would like to do is to record and at the same
> > time (or later) playing back at
> > a slower speed.
> > Thanks a lot
> > Libero
> > --
> > Libero Mureddu
> > Vanha Viertotie, 21 as 417
> > 00350 Helsinki
> > Finland
> > http://webusers.siba.fi/~limuredd/
> > http://www.myspace.com/liberomureddu <
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> derek holzer ::: http://www.umatic.nl :::
> ---Oblique Strategy # 149:
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Vanha Viertotie, 21 as 417
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