[PD] Raspberry Pi: Loading Samples RAM problem

[Christof Ressi]

another trick is to use [readsf~] in an upsampled subpatch. 

BTW, I have ideas for adding a worker thread to Pd (similar to Supercollider), which would help solving a lot of Pd's realtime-safety issues. I want to do that in the next couple of weeks when I have more time.

Chrisotf

> Gesendet: Freitag, 01. November 2019 um 14:21 Uhr
> Von: "oliver" <oliver at klingt.org>
> An: Pd-List <pd-list at lists.iem.at>
> Betreff: Re: [PD] Raspberry Pi: Loading Samples RAM problem
>
> Hi,
> 
> try to use "soundfiler" to read only chunks of your files. so it's 
> actually more a "harddisk"-streaming method.
> 
> have some example patches here:
> 
> mind, that this will be obviously limited by the read-speed of your SD-card.
> 
> 
> best
> 
> oliver
> 
> 
> 
> 
> Jakob Laue wrote:
> > Dear list,
> > i have a little problem with my raspberry pi..
> > I have built an eight-track sample player patch that runs on a raspberry pi.
> > When the patch loads, it initially loads all the samples it finds in 
> > /home/pi/SamplePacks/SamplePack1, SamplePack2 etc..
> > into RAM using the standard approach:
> > - create two tables for each sample
> > - read data into tables with [read -resize table1 table2(
> > Afterwards I use [soundfiler] and calculate the frequency for [phasor] 
> > and so on and so forth.
> > The patch works when I load a total amount of 500 gb into RAM.
> > Today I tested to load 9 GB of samples and the result (obviously) is the 
> > pi crashing.
> > I have tested on a raspberry pi 2 and a raspberry pi 3. Both pis only 
> > have 1 GB of RAM so it's obvious that problems arise trying to load 9 GB 
> > of samples.
> > Do you have any hints or ideas how I could solve this problem? Loading 
> > from disk while performing is not an option (I think) because of audio pops.
> > Do you know any ways to extend the RAM of the pi?
> > Maybe you know of some other small boards like beagle or so that have 
> > more RAM than a pi.
> > Thank you very much! Jakob
> > 
> > 
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