Re: [fluid-dev] FluidSynth on Raspberry Pi with Wolfson Pi card

[R.L. Horn]

On Fri, 22 Apr 2016, Maciej - filologia angielska wrote:

> 2. Today I noticed that the problem must be due to Raspberry Pi's 
> limitations in terms of its computing power.

Fluidsynth, it has to be said, is a bit of a CPU hog.  Unfortunately, I 
believe the only way to boost performance is by using boards with more 
processors, which fluidsynth doesn't take advantage of.

> fluidsynth -C0 -R0 -r22050 -l -a alsa -o audio.alsa.device=plughw:0

An HW: device would probably be faster (at least you don't have resamplers 
on top of resamplers), but latency is often a problem.

> Then I increased the -r to 44100 and subsequently to 48000. With each 
> increase, the Rpi would encounter "funny noises/drop-outs" (I do not 
> know how to call them) and eventually the machine would crash during 
> some of the more complex parts of the MID song.

That's not supposed to happen: you shouldn't get an EIO unless something 
really serious goes wrong.  It sort of sounds like the driver simply gives 
up after X number of under-runs.