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.
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