Line out to line in, noise issue

no--name

Distinguished
Apr 15, 2008
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I have 2 pcs, IIRC both onboard audio chips are realtek, I connect the line out of pc1 to the line in of pc2 with a male to male 3.5mm audio cable and it generates a nasty noise in that channel.
I have tried different cables with the same result.
Any idea why this happens and how to fix it without spending too much money?
Thanks in advance.
 

BuddhaSkoota

Estimable
Aug 16, 2014
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You are likely hearing the 50 or 60 Hz hum caused by the slight difference in ground potential between the 2 PCs. This causes a small current flow in the audio cable which causes the noise that you hear.

There are hum-eliminating devices available like this isolator for around US$10.

 

BuddhaSkoota

Estimable
Aug 16, 2014
60
0
4,610
19


You are likely hearing the 50 or 60 Hz hum caused by the slight difference in ground potential between the 2 PCs. This causes a small current flow in the audio cable which causes the noise that you hear.

There are hum-eliminating devices available like this isolator for around US$10.

 
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