[PD] Pd Vanilla on Raspberry Pi

Miller Puckette msp at ucsd.edu
Mon Aug 13 20:29:25 CEST 2012


This is good news about the TASCAM devices (I see there's a whole series
of them and they're cheap.)  I've also heard that Presonous's interfaces
are class compliant, but I've now forgotten who told me that.

I read some months ago on the Raspberry Pi site that it should perform
"about like a 300 mHz Pentium II" - and the fact that it runs the phase
vocoder patch without running out of CPU cycles roughly confirms that.

For those of you who are getting skips in the sound, I'm curious if Pd
is printing the usual messages like:

priority 96 scheduling enabled.
priority 98 scheduling enabled.

on standard error when it starts up -- if not, it would be worth trying
to figure out how to get Pd to be able to get real-time priority which
might fix some of the problems.

cheers
Miller

On Mon, Aug 13, 2012 at 08:35:25AM -0700, Scott R. Looney wrote:
> hey folks - just commenting on USB class compliant devices - the Tascam
> US-800 interface (about $100US) is another class compliant device. it's
> been shown to work reliably with 8 track recording on iPad. just wanted
> folks to know there was a cheaper interface option out there, though i'd
> certainly love to own a Fireface USB interface myself. The US-800 has 6
> Neutrik inputs with phantom, 2 SPDIF (Stereo In and Out)  and 4 unbalanced
> outs. it's very light, though, and it may be possible (with modification)
> to stick the R-Pi inside its case.
> 
> hope this might help somebody...
> 
> scott
> 
> On Mon, Aug 13, 2012 at 6:54 AM, Tedb0t <lists at liminastudio.com> wrote:
> 
> > Huh, really? How did you find this out?
> >
> > —tedb0t
> >
> > On Aug 13, 2012, at 8:43 AM, Pierre Massat wrote:
> >
> > > Hi all,
> > >
> > > I don't know whether this was mentioned here, but the audio output
> > throught the built in jack is bad because it uses PWM followed by a filter,
> > no real dedicated dac. You can tweek the settings of Pd for years but
> > you'll never get an good quality sound out of it.
> > >
> > > Pierre.
> >
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