Intermittent sound is heard from the speakers periodically.

On the computer, I began to notice that an extraneous sound was periodically heard in the speakers, and it was impossible to remove it. I don't know what to do with it anymore.

SVEN speakers
Model SPS-607

This is the first time I encounter such a problem, and I don't know what to do.

Here at this link you can watch a video where this sound is captured

https://yadi.sk/i/z2mMY7p_rvxgU