High frequency noise in speakers?

Question

Acustic systems

I assembled a new system unit - when connecting USB speakers, high-frequency noise is heard, when connecting a WEB camera, those with whom he communicates hear noise from the microphone. What could be the problem and how to solve this problem? ***VIDEO***

Answer 1

The problem is solved, the power of the speakers was transferred to the charger for the mobile phone.

Answer 2

1. Check other speakers and camera, etc.
2. Plug into a different outlet (try turning off all electrical power at other outlets).
3. It is possible that the problem is in the PSU or in the amplifier (what generates the sound at the output).
If all else fails - look for a microphone!

Answer 3

You, my friend, have a ground loop. The insulator will help you ( 2 3 4 5 6 ). You can solder yourself, there are schemes.