Scrolling Static

  • Thread starter Thread starter dachay2tnr
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dachay2tnr

dachay2tnr

One Hit Wonder
I just loaded a version of SF5 that I thought I would try out. However, when the .wav file scrolls, it get static in the playback. If I reduce the magnification on the window (so the .wav doesn't scroll), I don't get the static (although I still get some occasional crackles).

Any ideas what's causing this?

I had the same problem in Wavelab, until I noticed that I had my playback device set to Microsoft Sound Mapper. When I changed it to my sound card, the noise went away. However, doing the same thing in SF had no effect whatsoever.

It's quite annoying and makes the program essentially unusable.
 
Could it be a video issue? Do you have the sound card and your video card sharing an interupt?
 
No cigar, but...

The video card is on IRQ 5 and the sound card is on IRQ 10. However, both IRQ's also show "ACPI IRQ for PCI Steering (which I think is normal) and IRQ 10 additionally shows "Intel PCI to USB Universal Host Controller".

Could the USB Host be causing a conflict? Windows reports that no conflicts are present when I check the sound card properties.

I don't see any open IRQ's, exept maybe 9, which shows "SCI IRQ used by ACPI Bus". I'm not clear on what that is or does.

Any ideas? Should I try to move the USB Host to 9 (or the sound card?). Maybe move the PCI cards for video and sound into different slots (or just switch them)? I have open PCI slots, since the only two PCI cards I have are the video and sound. Your thoughts, Sultan?
 
Well, yes I have ideas, of course, I always have ideas. Some worse than others...hehehehehe

Oh, anyway. Yes the USB stuff could be causing your issues. Also, if you aren't using power management you can turn off the ACPI stuff. And if you have no devices on COM1 or 2 then you can free up those IRQ's as well. 4 and 3 respectively. Turn off the USB in BIOS OK. Then try again and see if the ACPI stuff goes away. I personally don't think a DAW needs to monitor the bus for inactive devices during a recording session..call me funny that way...hehehe

Try that and see what you get...next question.
 
Sometimes it's just too simple...

Well after three hours this morning of fooling around with IRQ's, disabling USB, moving PCI cards, reinstalling drivers, etc., I remembered the Graphics Performance tab in Control Panel/System. Changed the setting from Full Hardware Acceleration to one notch lower and... problem gone.

Thanks for the thoughts anyway, Sultan. BTW, this system isn't really a DAW. We record on a DAW which is set up at our "studio". I'm only using this one to edit some files inbetween sessions. Otherwise, this is my basic home computer.
 
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