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How to find and fix hum in 3 easy steps - PS Audio
https://www.psaudio.com/ps-how/how-to-find-and-fix-hum/
If the hum is caused from the cable TV connections, or internet connections, you can use PS Audio’s HumZero. If it is not a cable TV causing the problem, it may mean there’s a power ground loop between the two pieces of equipment. You can test for this by using an AC “cheater plug” that lifts the third wire ground from the AC receptacle.
How to Fix Hum, Buzz and Other Noise in Your Audio …
https://www.guitarcenter.com/riffs/gear-tips/live-sound/how-to-fix-hum-buzz-other-noise-in-audio-cables
If the hum is actually at 60Hz, it's likely due to faulty cables, poor shielding or an audio cable being close to a strong magnetic field, like a transformer-based power supply. If the hum is an octave higher, at 120Hz, or at one of the higher harmonics of 60Hz, it's almost always some sort of ground loop problem. Where You'll Find Noise
How to get rid of hum and other noises from your audio ...
https://www.techhive.com/article/582313/how-to-get-rid-of-hum-and-eliminate-other-noises-from-your-audio-and-video-systems.html
There are really only one or two hard and fast rules for cables and noise. The first is to never run a power cable across or near audio or …
Noise problems caused by audio cable - Shure
https://service.shure.com/s/article/noise-problems-caused-by-audio-cable
In an AC circuit, hum results from voltage being electrostatically coupled into the cable due to the capacitive reactance inherent between power and audio signal lines. The higher the capacitive reactance and the higher the impedance, the higher the induced noise. Additionally, the longer the cable run, the more susceptible the cable will be to hum.
hum in long cable - Audioholics Home Theater Forums
https://forums.audioholics.com/forums/threads/hum-in-long-cable.41758/
-When the long leg to the computer is disconnected, the ground loop is still present. It would seem that the cable line to the back of my TV is somehow the culprit. Because whether I plug the RCA cables directly to the TV or into the receiver, the ground loop hum is present. But disappears when the TV is disconnected from the cable.
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