Yeah, I know this sounds silly ...

We hear a more or less constant chattery sound. I've found two ways to stop it - switch off the speakers or pause the processing in BOINC manager.

When the BOINC screen saver kicks in it's really obvious that the processing is linked to the sound somehow.

Muting the sound through Windows does not stop it.

So it would appear to be some sort of interference on the speaker line. The speakers are USB powered and take the audio from the line-out connector at the back of the PC.

We also hear a noise when http://www.channel5.com/ is open - the noise occurs whenever the picture on the home page switches.

Any ideas??

Thanks,
Tim

You sure it isn't a warning from the BIOS (over the internal speaker) that the CPU is overheating? Especially heard on Intel CPUs that have a lot of dust-intake.

---

Your description "sounds" like interference between video card/chip and sound chip/circuitry.

Do you hear the same noise when speakers are unplugged from all ports and you use only headphones?
Do you have proper grounding?

May be also problem with dried/leaking filter capacitors or weak PSU (both can cause interference through the power lines)

Do you have some of the cables inside the computer that run near the video card?
Try to move/fix them away of the GPU.

---

 


- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

sounds like using line out and powering speakers through USB re-invented the oldschool audio monitor