how do microphones not include system sounds?

Question

So, if I’m in a call with someone, with the speaker on, why does the mic not receive the sound the phone is emitting?

In: Technology

Answer 1

The gain on the microphone may be set for speech — it detects speech, but not a lot of outside sounds. You may be able to increase the ‘gain’ setting in the audio controls to detect other outside sounds, if that’s what you want.
That lower ‘gain’ setting is to prevent a lot of extra unnecessary noise — but if you’re in a quiet setting and want to detect other sounds, you can turn it up.