Hey Michael,
I'm not yet in possession of a Raspberry Pi, but I think what I've learned in
designing an iPhone app will be useful. Very low-CPU methods for beatslicing
and synthesis is what I'm working on right now. With regards to audio input, I
think the key is to find something tiny, because the form factor of the Pi is
what's interesting to me - tiny DSP engines±! Yum ;)
So, the Griffin looks good because it's small, but there are a number of really
cheap USB audio interfaces that are dongle-sized. Perhaps we could share any
experience we have with these generic units.
But right now I'm more interested in wavefolding ~ I'll get a Pi - I've been
slacking lately (spending more time with the family)
Ed
Gemnotes-0.1alpha: Live music notation for Pure Data
http://sharktracks.co.uk/
________________________________
From: Michael Zacherl <sdiy-m...@blauwurf.info>
To: Ed Kelly <morph_2...@yahoo.co.uk>
Cc: pdot <pd-ot@iem.at>
Sent: Sunday, 19 August 2012, 12:32
Subject: Re: [PD-ot] Raspberry Pi (still is: openstomp ... PD pedal?)
Hey Ed,
did you follow the various threads on the main-list?
Could be interesting!
Currently I'm investigating the possibilities of this little thing for
installation and performance stuff.
It's limited but I can see its potential.
Admittedly I'm spoiled by Mac OS X, and I did Linux only for commercial server
stuff, audio wasn't really needed.
I got an old Waveterminal U24 USB audio interface which I tried to connect to
the RPi running Pd-extended.
I have no clue wether this interface is Class Compliant or not, I got some
sound out of it for a couple of seconds until everything bursts into a stream
of white noise.
The same patch works fine using the internal audio out (HDMI and analogue
within limits).
Powerwise, as I posted on the mainlist, I think nice things can be done and
there's potential to strip down the system to reduce basic load.
Would be nice if we achieved something useable based on this. :-)
Michael.
On 4.3.2012, at 18:15 , Ed Kelly wrote:
> Hmm. Doesn't seem to have an audio input though, so perhaps it'll work for a
> synthesizer but not for a "stompbox" straight away. The site recommends a
> "USB microphone" for audio in, so that's not encouraging...
> Ed
>
>
>> So what about a Raspberry Pi inside a stompbox that runs pd?
>> But could the arm11 in that thing handle awesum (sic) audio processing? ;)
>
> Well the Raspberry Pi is based on an ARM chip. Does anyone know how these
> chips compare when running RJDJ or libPD applications?
> Perhaps this is a possibility, without too much modification of libPD or even
> RJDJ.
> ...but someone would need to write a host for the Raspberry Pi.
>
>> What do you need by "writing a host for Pd"? Something like a very simple OS?
>
> Er..well I can see they run Linux, so I think I was mistaken. My head was in
> the world of BASIC - nostalgia gets in the way of the facts!
> Of course, Pd would need to be compiled for the hardware.
>
> I think we need to wait until one of us gets one and tries it out before we
> find out what they're capable of. I've expressed interest, but they're
> massively oversubscribed.
>
>
>> I bought mine yesterday, and should receive it in about a week. The first
>> thing I'll do is try to install Pd.
>
>
> On the other hand, the idea of a dedicated PDOS isn't a bad idea...
> Ed
>
>> Yes, how hard would it be to have this?
> Well, it could be a highly stripped-down version of Linux. I don't think
> anyone has the time to write an OS, so I was being mischievous in suggesting
> this. I am having some funny ideas today...
> Ed
>
> Pierre.
>
>
> Even if it was just the PD core, it would enhance the educational scope of
> the Raspberry Pi - which is the whole point of this single-board computer (I
> learned my first programming on a Sinclair ZX Spectrum in the 1980s).
>
> I never thought I would see the day when the BBC Microcomputer would rule the
> world in telecommunications, but ARM chips and the ARM RISC instruction set
> are running every smartphone on the planet right now (correct me if I'm
> wrong :) and some of these smartphones run RJDJ and libPD really well.
>
> Dataflow music programming in schools. Maybe...
>
> Ed
--
noise chasers: http://blauwurf.at
http://soundcloud.com/noiseconformist
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