Why do two phones in the same room make weird sounds when on a live call?

Question

Sometimes even if only one of the phones’ mic is on.

In: Technology

Answer 1

Feedback. The same soundsource is „heard“ and „played“ at the same time. The same issue occurs when the microphone is getting too close to the speaker. It’s a feedbackloop. The sound from the speakers go into the mic and come out of the speakers and go into the mic again…