0
votes
1answer
370 views

Why does my sound card output a high pitched sometimes oscillating sound or whine?

I've asked four questions now so I'm out of hints. Excuse this question for it's vagueness... Why the hell is my sound card emitting this high pitched squeal when I run it through a mixer with a USB ...
4
votes
1answer
207 views

What is this incredibly annoying noise?

Hey all, I've been getting this noise out of my set top box, desktop and laptop audio outs into my mixer. I've also tried using usb soundcards out ($5 from ebay) and they don't eliminate the problem. ...
3
votes
3answers
3k views

How to eliminate 50 Hz noise from microphone?

Can anyone recommend a good technique on microphone grounding and elimination of 50 Hz noise? Update This is a simple headphone mic. When I touch mic's body the noise is decreased significally.