Hi guys, I've just tested all the IRQ priority settings in
and I've found
that IRQ18=1, IRQ0=2, IRQ8=2 and IRQ18=1, IRQ0=1, IRQ8=1 are both better than all the
And the combination of IRQ18=1, IRQ0=1, IRQ8=1 made a
little bit better result than the another combination.
It give the most details, the
most transparency, and the least noises come out, in acoustic hearing, the most thinnest
high freq. and the most heavy shocking earthquake-like natural bass.
course, it cannot be defined by ears.
Everytime when I open my foobar2000 and start
to test, I've also just open the firmware statistic monitor from the official driver of my
Echo AudioFire 4 called "FireWire Analyzer" and compare abouth their ASIO buffer in/out
total time, ASIO wakeup time and ASIO host time.
I've found that it's too WTF
if the priority of IRQ0 and IRQ8 are not the same. It would made the most i/o, wakeup and
host time, the most latency and heard too damn noisy.
But the priority of IRQ0
and IRQ8 are not the same, e.g. both 1 or both 2, then it would made more and more less
i/o, wakeup and host time, more and more less latency.
And I've tried to repeat
the experiment again and again, I've found the combination of IRQ18=1, IRQ0=1, IRQ8=1
makes the least i/o, wakeup and host time, and the least latency, even I can see the
system can become the most stable, and the most fast responses, just like the whole system
got a little bit faster.
Quite strange, is it?
Cubase 5.1 + Foobar2000 -> ASIO + MMCSS + Windows7 -> SIIG TI chips 1394 PCIe -> Echo AudioFire 4 -> HH MX250 + Wharf Delta70
A native USA style contemporary R&B artist in HongKong