Hi everyone, I'm almost done with this song, and Ive been mixing in Pro Tools 6.4. Im using 16 tracks, plus some aux inputs and 2 midi tracks. The problem is Im hearing this hiss or buzzy sound when playback. We had to add some extra voices and the same noise will sound while recording. It seems like a trial and error thing because the noise dissapears after trying several times to playback or record. Just push play until its gone, sometimes it will disappear for a while, but it won't go definitely.

I run pro tools in a Power Mac G5 dual 1.8Ghz and 2.0Gb Ram, I was wondering if this could be lack of memory or something like that, however it seems enough memory to me. In this case, Ive been using more plugins than I usually do so I dont know if this could be a problem.

Is there any way to set up your computer so It will work at its maximum performance?

Ive tried with different setups in the playback engine, and still hear rgat noise

I would appreciate anyones help.

THanks in advance