[PD] How to navigate a long sound file in vanilla PD

Joe White white.joe4 at gmail.com
Tue Mar 31 11:45:26 CEST 2015

Yeah [readsf~] would work! Although it's worth bearing in mind your file
size is going to be > 500 MB with stereo wav @ 44100Hz

On 31 March 2015 at 10:35, Roman Haefeli <reduzent at gmail.com> wrote:

> Hi Stefan
> From readsf~help.pd:
> "Open takes a filename, an onset in sample frames, and, as an override,
> you may also supply a header size to skip, a number of channels, bytes
> per channel, and endianness."
> So the second argument (the one after the filename) specifies the number
> of audio samples to be skipped at the start when opening the file.
> Roman
> On Tue, 2015-03-31 at 11:18 +0200, Stefan Tiedje wrote:
> > Hello list,
> > might well be the first post here, though I am well experienced in
> > Max/MSP...
> > As there is no way to get Max patches run on mobile devices, I want to
> > do it in PD using the MobMuPlat apps for Android/iOS.
> > The task would be to simply to play a stereo sound file, but of about
> > one hour lebgth. As MobMuPlat only supports vanilla PD I am restricted
> > to that as far as I know.
> > In the docs and on the net I did not find any way to navigate within
> > that playback. (Its crucial for rehearsals.) The size is too big for
> > loading it into RAM (the mobile devices which are around often have less
> > than 1 GB of RAM), Is there a known way to tackle this seemingly simple
> > task???
> > A tedious way, I want to avoid, would be to split the sound file into
> > pieces, which would at least let me jump in at specified places, but
> > that would eat up the space on the device, as each piece would have to
> > play until the end...
> > Of course I would also love to find a way to play back an mp3 and freely
> > navigate within that as well...
> > Any hints how to proceed are appriciated...
> >
> > Stefan Tiedje
> >
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