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Re: [fluid-dev] Small CPU stuttering fluidsynth

From: Element Green
Subject: Re: [fluid-dev] Small CPU stuttering fluidsynth
Date: Wed, 26 Jan 2011 14:49:07 -0800

Hello Tashi,

My guess is that your device does not have a floating point unit (FPU).  FluidSynth makes heavy use of floating point math, so your device is probably emulating all the instructions, which is very very slow.  There has been talk from time to time on implementing integer based (fixed point or otherwise) in FluidSynth, but motivation is rather low in that area, since FPU-less devices are the only real benefit of that, its a lot of work and another embedded system with an FPU could simply be chosen for those types of use cases.

Best regards,

On Wed, Jan 26, 2011 at 1:05 PM, Carma Trepp <address@hidden> wrote:
Hi all

I installed fluidsynth on my Open Pandora device. Its a device with a
800Mhz ARM CPU and 256MB RAM. I use the packages from the Angstrom
repositories. Version 1.0.8. My problem is I get stuttering noise
after play multiple notes.
I look at the command top and Fluidsynth use the CPU 100%. When I play
some notes fluidsynth use all CPU ressources. Even if I play nothing
with no soundfont loaded fluidsynth use 34% CPU. I know my device has
not much horsepower, but I hope to get fluidsynth ''fluid'' running.


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