I have Vista SP1, an ATI HD2400XT graphics card, which is also supplying sound to my AV amp, plenty of memory, dual cpu etc.
The problem I have is that, although the sound I get is perfect in all the usual frequencies (low, mid and top) there appears a further upper layer (thats the only way I can describe it) which has a kind of ringing sound and speech becomes very hissy. I can cure this by rebooting the pc when I can then play an avi/divx/dvd etc perfectly well, but as soon as I close down the file I'm watching and then open another file I get the sound problem. Again this is curable by rebooting, but that is obviously not what I want to keep doing.
Anyone have any ideas?
Further info: I have gone through the (very basic) windows sound config dialogue boxes and checked theat HDMI is being used (although its saying I only have 2 speakers when I actually have 8). I have the latest ati drivers, the latest Realtek AC3 (ati specific) driver 1.89. I use any of PowerDVD 8 ultra, divx player, Cool DVD, Jet Audio or Windows Media Player and have the same problems with each. I also have an output from my cable tv box going through the AV which has perfect sound all the time so its not the AV.
The problem I have is that, although the sound I get is perfect in all the usual frequencies (low, mid and top) there appears a further upper layer (thats the only way I can describe it) which has a kind of ringing sound and speech becomes very hissy. I can cure this by rebooting the pc when I can then play an avi/divx/dvd etc perfectly well, but as soon as I close down the file I'm watching and then open another file I get the sound problem. Again this is curable by rebooting, but that is obviously not what I want to keep doing.
Anyone have any ideas?
Further info: I have gone through the (very basic) windows sound config dialogue boxes and checked theat HDMI is being used (although its saying I only have 2 speakers when I actually have 8). I have the latest ati drivers, the latest Realtek AC3 (ati specific) driver 1.89. I use any of PowerDVD 8 ultra, divx player, Cool DVD, Jet Audio or Windows Media Player and have the same problems with each. I also have an output from my cable tv box going through the AV which has perfect sound all the time so its not the AV.