Noisy audio while using network

l0v3r · Aug 7, 2005, 09:46 AM

My system is an Asus P4C800 Deluxe, P4 @ 2.8 GHz, 1 Gb RAM DDR400, Audigy2 ZS and the internal network adapter 3Com 509; listening for something such MP3, game's music, etc, if from another PC I try to copy something to a shared folder of this machine, I get noisy audio for the time of the copy process.
I've tried to upgrade chipset and audio drivers (both Creative and kX), changed the Audigy card slot to one where the IRQ is free and not used by other peripherals but I still having that problem.
Someone have an idea about this?

Thank you in advance

bye

**dj_stick** · Aug 7, 2005, 07:45 PM

try using a better quality speaker cable

btw what does the peakmeter show as the noisefloor (decibel level when no sound is playing)

Maddogg6 · Aug 8, 2005, 11:35 AM

Im thinking you may need to give the MP3 player or game - a higher CPU/OS piority - as it seems to be giving priority to the network adaptor. - Both devices probably performing DMA operations and seems to interupt the sound playback instead of slowing the data tranfered through the network adaptor.

It *could* also be that the MOBOs lan is excessivly noisy, which may require plugging in a better one.??

HTH

Necrosis · Aug 8, 2005, 11:41 PM

Hmm I wonder if shielded cat-5 might help as well?

l0v3r · Aug 11, 2005, 07:25 AM

Thank you guys for your help.
I'm using FTP cat 5 cables and I don't think it's a cables problem, because the noise is a corrupted sound when there's a network activity together to a write activity on the disk; while disk activity only there's no problem, even with the network activity alone; seams to be a problem with the chipset that is not able to mantain the right DMA transfer for the Audio when both the network and disk controller are used simultaneously.
I've seen that the newer P4C800-E differ from my older P4C800 by the network card: P4C800 have the 3Com connected to PCI bus, P4C800-E have the Intel Gigabit connected to dedicated CSA bus. May this change be made due to resources problem using the Gigabit lan on the PCI channel.
Boh, I'll try using a normal 100Mbit network adapter instead the one integrated to see if the problem is this.

Bye