[linux-audio-dev] about MIDI timing...

[Mulyadi Santosa]

Hello list...

I am curious to research further about MIDI timing and here is something 
I want to ask...

I wonder, if we missed the (MIDI?) event a bit (perhaps 1 miliseconds?), 
what would happen? I guess it will be underrun? Or technically, do we 
determine a playback as "choppy" by calculating the time difference 
between sending two successive MIDI events? I don't know much about 
this issue, so I will gladly receive any thoughts.

On the other hand, last night I observed how timidity++ works by using 
strace and I found no *sleep() (nanosleep, msleep and friends). Does it 
mean, major MIDI software synthesizers use non system sleep mechanism 
for the timing? I also read that not all Linux kernel sound card driver 
enable the internal card timer, thus the software must rely on system 
timer. Is it correct?

thanks in advance for your help and attention.

regards,

Mulyadi