System noise while graphics are moving

[wodger]

Ever since I upgraded my computer, OS and moved to NPVR (so I have no idea which new component causes the problem) I get an odd background system noise through the TV speakers when nvpr's graphics are moving. Not during playback, but just when dialogue boxes are opening and closing, and when I move the home menu left and right. It sounds like a whirring kind of noise. If I am deleting a lot of recordings from the same folder one by one, the pitch of the noise gets higher as the number of recordings in the folder goes down. I guess I could post a recording taken with my phone (haven't taken one yet) if anyone think it'd be helpful. Everything works, but this does get on my nerves.

[McBainUK]

If the speakers are off do you still get the noise?

[gEd]

grit on the inside of your tv screen perhaps? :-D

good question from McBain to ascertain is this is an actual windows sound or rather a noise from the PC

basically, if it is not a windows sound, it must be a noise coming from inside the PC. Either the cpu fan or as I suspect, you have bought a new graphics card with a (small?) whiney fan on it. As Next PVR is using directx calls, when you start navigating the menu's, the card either switches to 3d mode and a higher fan speed else the effort of displaying the menus is causing the card to heat up. Plausible ??

[johnsonx42]

it's just electrical noise from the operation of the graphics components leaking into the audio circuitry. there's little you can do about it other than swapping components. if you're using on-board video, get a different motherboard or try a discrete graphics card. or, if you have an old pci sound card laying around, try that and disable the on-board sound.

[Pob]

I had a similar problem with a PC Chips (ECS) mainboard -the same company famed for it's fake cache chips in the 90's! I would get audio feedback when any graphics moved on the screen, even just scrolling through webpages. I lived with it until I got a new mobo. Never did try a sound card though, presumably it would have sorted it but never had any spare PCI slots to put one in...

[Reddwarf]

I had a similar problem with a PC Chips (ECS) mainboard -the same company famed for it's fake cache chips in the 90's! I would get audio feedback when any graphics moved on the screen, even just scrolling through webpages. I lived with it until I got a new mobo. Never did try a sound card though, presumably it would have sorted it but never had any spare PCI slots to put one in...

I solved that same problem by buying a digital usb soundcard, dead quiet in the speakers unless there is some actual audio.

[stustunz]

make sure your sound output is not set to full
To get higher volume turn your tv or amp up more

[johnsonx42]

yes, stustunz's advice is sound (oooh, pun!) - sometimes the noise is introduced in the pre-amp circuit, so more pre-amp gain equals more noise.