Samsung Galaxy A5 2017 microphone

Sebs RO

Commendable
Sep 27, 2016
15
0
1,510
Hi! A few days ago I bought the new Samsung Galaxy A5 2017. It runs and looks great.
I've been sending WhatsApp voice messages for a while now, and I noticed something. Sometimes, when I record a WhatsApp voice message or a video with the basic camera app, the microphone records some low noise, even though there are no major sounds in the room. It's like a very low "dog crying" sound. (I have no better comparisons) Sometimes there's not a sound, and sometimes it records the sound presented above. What can it be? Is it just a very low sound that only appears few times a day in my room? (lol)
Thanks!
doesn't anyone know? :(