[PD] best way of controlling 50 speakers with pd?

[Andy Farnell]

Okay, then best to stick with one DAC per channel 

I was going to suggest a super cheapy hack for the case
where you just want one sound to have multiple possible
speaker sources, which is to use an audio switch based on
4011 bilateral switches, with a single amplifier and
an Arduino to multiplex the channel.

But if you want concurrent sources then its likely
less confusing and more flexible to build a system
where every speaker has its own amplifier and DAC.

I've never built such a system, but just mulling over
the possibilities you might have with new technologies.

cheers,
Andy



On Sun, Sep 02, 2012 at 09:47:35PM +0200, umberto torrez wrote:
> simultaneously would be better. but maybe not the 50 at the same time ,
> maybe simultaneously up to 8?
> 
>  Is it too much difference? simultaneously vs no simultaneously?
> 
> cheers
> 
> 
> 
> 
> U.
> 
> 
> 2012/9/2 Andy Farnell <padawan12 at obiwannabe.co.uk>
> 
> >
> >
> > In that case Umberto, one more specific question;
> >
> > Do you need these speakers to play simultaneously, or
> > for just one to make a sound at any time?
> >
> > Andy
> >
> > On Sun, Sep 02, 2012 at 09:18:55PM +0200, umberto torrez wrote:
> > > Hi, Andy and how does your system work? Do you have a link?
> > > How many speakers are you using?
> > >
> > >
> > > I dont need high degree of phase stability , i need to control 50 very
> > > cheap speakers. I dont really mind if they dont produce all the frequency
> > > range.
> > > If each speaker generate only one frequency , its ok.
> > >
> > > I only need to be able to control them (the 50) from the computer,  i was
> > > thinking, maybe not using sound?
> > >
> > >
> > > cheers
> > >
> > > U.
> > >
> > >
> > > 2012/9/2 Andy Farnell <padawan12 at obiwannabe.co.uk>
> > >
> > > >
> > > > A question to consider; Do the channels need a high degree
> > > > of phase stability?
> > > >
> > > > Fernando is designing for a WFS system here. You may have more
> > > > relaxed requirements for a theatre or installation multichannel
> > > > system not needing such a degree of correlation.
> > > > Using a very simliar approach with jack-udp, but with
> > > > asynchronous receivers, chained ethernet, using gumstick
> > > > or Raspberry Pi boards with cheap audio USB dongles.
> > > >
> > > > Andy
> > > >
> > > >
> > > >
> > > > On Fri, Aug 31, 2012 at 09:16:40AM -0700, Miller Puckette wrote:
> > > > > Best solution I've seen so far is by Fernando Lopez-Lezcano --
> > there's a
> > > > > paper in the Linux Audio Conference 2012:
> > > > > http://lac.linuxaudio.org/2012/papers/29.pdf
> > > > >
> > > > > cheers
> > > > > miller
> > > > >
> > > > > On Fri, Aug 31, 2012 at 05:58:50PM +0200, umberto torrez wrote:
> > > > > > Hi list, i was wondering which is the best approach for
> > controlling a
> > > > lots
> > > > > > of speakers with pd? 50 ?
> > > > > > Is there any hardware or technique that allows to do this and that
> > is
> > > > not
> > > > > > so expensive?
> > > > > >
> > > > > > any idea?
> > > > > >
> > > > > > Umberto.
> > > > >
> > > >
> > > >
> >
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