Question / Help Audio making squeaking noise in YouTube during streaming

[Painted Zebra]

Hi there. My first post and it's in desperation. I have been having trouble with audio for the past two days. I am getting a noise like a squeaking wheel (I at first thought it was the DVD drive on the laptop - that kind of noise).
The setup - Windows 10 laptop with Yeti Blue USB microphone and a Logitech C930e webcam. Using software encoding 1280 x 720 @ 25fps with bit-rate set to 3000kbps video and 160 kbps audio, no filters applied (although I've tried with and without noise suppression). The noise is very noticeable at high volume and is very irritating.
I replaced the laptop with a desktop, same setup and same result with the squeaking.
Any suggestions? I'm thinking it must be the microphone, or the webcam, some kind of incompatibility or something else?
All suggestions very much appreciated. I have a streaming event planned for tomorrow morning (Sydney time) and I am at my wits end.
Thank-you in advance.
PZ

 

[Painted Zebra]

So I have determined that the Blue Yeti mic is the problem. Does anyone have any experience with one of these behaving badly whilst live streaming?

 

[Painted Zebra]

My apologies to the makers of the Yeti Blue microphone. It wasn't the mic after all.
It turned out to be an Ethernet over power lines (EoP) issue. Once I eliminated the adapters and just ran a long length of Ethernet cable instead the issue was solved. Phewww. Been working on a solution for the past 24 hrs.
Thanks for reading.

 

[koe66]

thanks for this thread - i think i have the same problem, but i run on wifi, unfortunately i do not have a cable that long to support the stream but have been trying different sets of headphones and microphones and nothing helped. I am setting up different pc right now but i don't think this will help, so i guess i need to buy the cable and try that.

 

[Painted Zebra]

Yes can definitely confirm that the problem was using a Ethernet over powerline LAN link. Would not have thought it would affect the sound like that - seeing that it's all just bits and bytes. Can anyone shed some clear light on why?

 

[Narcogen]

The electricity running over the unused conductors in your ethernet cable generate a magnetic field that can be picked up by audio hardware.