[PD] how to make a proportional canon

[Libero Mureddu]

Wow, thanks, I´ll check your example .
Do you think my approach is reliable too? I´d like to have some opinions
about.

Regards,

Libero

>
> ------------------------------
>
> Message: 2
> Date: Wed, 11 Jul 2007 06:11:13 +0100
> From: Andy Farnell <padawan12 at obiwannabe.co.uk>
> Subject: Re: [PD] how to make a proportional canon
> To: pd-list at iem.at
> Message-ID: <20070711061113.4f99d00c.padawan12 at obiwannabe.co.uk>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
>
>
> Have you tried using lists? A list of values interpreted as pairs of a
> something and a time interval ( where the something is a note value or
> pointer)
> make an easy way if you want to stretch or shrink the sequence in time,
> just
> scale all the time delays.
>
> A list sequencer takes a list in one go. It splits the first value off as
> a note
> and plays it to the output, then chomps the next element from the list and
> treats
> it as a delay to wait. After that delay time, it gives the rest of list
> (minus
> the last two elements) back to itself and does it all again....
>
> So this list plays note 44, waits 125ms then plays note 50....
>
> [44 125 50 125 44 250 52(
>
> until it runs out of elements.
>
> In attached example you can scale the speed using horizontal radio bar, it
> just multiplies all the time values by {0.25, 0.5, 1, 2, 4...}
>
> On Tue, 10 Jul 2007 14:23:29 +0300
> "Libero Mureddu" <libero.mureddu at gmail.com> 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
> >
>
>
> --
> Use the source
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