Quote:
Originally Posted by alea35  i am having the same probably pretty much. e-mu 0404 usb on a laptop. 2 gz with 2 gb of ram etc. i used the DPC latency checker and usually it's under 500 but when it stutters and stuff it goes up past 30,000! wtf! i have no idea how to fix this
|
Did you try that player software I suggested? Set it output through E-MU ASIO @ any rate but remember try 1st using latency settings around 50ms then you can lower this setting yntil you start getting issues (here, 0404 USB works well with native ASIO @ 2ms even other activities, as like surfing the web, are on going while playing back audio.
Hmm... when it's a laptop in question, then 1st possible culprit for bad audio performance is a wireless NIC ... this must be disabled.
Quite often stuttering issues are related to low PCI bus performance ... this can be improved by lowering the PCI latency for graphics and some other devices/controllers ... for graphics it can be set to 32-64, USB/NIC ~0-32. Remember that PCI latency can be set only for PCI based devices/controllers.
You should check if there are certain processes/services that hogs CPU/resources now and then (when you get stuttering and other audible issues). DPC Latency tool is good tool for this but to find the device driver is maybe not very easy ... you could try with Performance tool (comes with O/S). I think I have posted these instructions already here but to be sure ...
Quote:
Checking "Thread/Processor time" usage is good point to start from. ! before starting, remember start all those software you think are involved and plug/power those additional equipment/devices you have there before starting this procedure.
- start the Performance utility by entering a command perfmon.msc /s in Start->Run... dialog.
In performance monitor utility's main window,
- enable the graph display
- add "counters" by pressing the "+" icon
-> select
-- "Threads" in "Performance objects" drop-list box,
-- "% Processor Time" in counter list
-- "All instances" in instances dialog
By setting the High Lite on (button), you'll be able to high lite the curve by double clicking it .. this also locates the thread (list below the graph area) which the curve belongs to. Now in graphics, you maybe see couple counters staying near 100% all the time (those are maybe just system "Idle" processes) ... just high lite those lines and by pressing the Del key you can remove this instance from monitored items (remember check that it's not some audio related item).
Finally, start working as normally and then when you get those audible issues, you should then see the "spike" in graph there and so on... |
jiitee
