Re: [Alsa-devel] midi timing fixes/questions

[Jack Moffitt]

> > 1000000000 * period / rate
> > 
> > and truncated to an integer.  for a period of 32 and a rate of 44100,
> > this means we are throwing away .58276643 microseconds per period.
> 
> Isn't it in nanoseconds (1e-9)?
> If so, the following drift will be 1/1000...

That definately looks like the calculation is in nanoseconds.

But I do hear a drift about like I described.  It's very noticeable
(certainly one would notice 240ms i think) with period=32, and not
really noticeable with period=128 (I don't know if 34ms is that
noticeable).

So I wonder if in the update_tick() macro in seq_timer.h considering
this value to be microseconds not nanoseconds.

And if so, why does it sound almost synced?  I'm getting pretty
confused.

jack.

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