[PD] polyphonic ? key, keyup setup question
kali.84 at gmx.net
Wed Oct 4 21:17:39 CEST 2006
thanks a lot for your quick answer padawan.
your attachment really comes in handy
long lives the poly object @-@'
-------- Original-Nachricht --------
Datum: Thu, 5 Oct 2006 07:52:04 +0100
Von: padawan12 <padawan12 at obiwannabe.co.uk>
An: pd-list at iem.at
Betreff: Re: [PD] polyphonic ? key, keyup setup question
> On Wed, 04 Oct 2006 18:44:54 +0200
> "Marten Rieger" <kali.84 at gmx.net> wrote:
> > hi everyone, i'm new to this list and pure data itself so please allow
> me to
> > ask some kinda n00by question.
> > i want to build a computerkeyboard setup in which i can press many keys
> > once to play chords and stuff and until now i found no solution to this.
> > as i want those notes to stop in the moment of the keyup event i made a
> > around which sadly stops all notes at the moment i release any key.
> > could anyone post me something or names of objects i should look at for
> > moment => thanks
> If you want polyphony you will need more than one oscillator. Each key
> pressed should be routed to a new oscillator. You don't need one
> for every key, but you need as many as the degree of polyphony you
> For example to make 3 note triad chords you need three oscillators.
> The unit that helps with this is [poly]. This combines pairs of values
> which represent the key and its status and prepends a number asigned
> in round-robin mode to each. Used in combination with a [route] unit
> you can have these sent to each of the oscillators. The argument to
> [poly] is the number of voices of polyphony you want.
> For example [poly 3] for a 3 note system.
> Each event is now a 3 value list.
> The [route] separates out each of these into 2 value lists and sends each
> to its respective output matching the number of an argument.
> See attchment... it's not the best way to do it, but hopefully you will
> understand with a little study.
> There is a problem with using the keyboard on many machines. The kernel
> automatically sends repeated events from the I/O, which isn't what you
> want for musical use.
> You can try setting your key repeat to the lowest rate possible
> and the longest delay before it starts, on linux/unix
> kbdrate -r 2 -d 1000
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