I tried this cheap mic he got off amazon and I was surprised at how little background noise it picked up during calls and on discord.
I also tried a blue yeti in cardioid mode still picks up background sound if it's behind me or even loud sound coming from the speakers. However, I noticed that the the cheap mic doesn't pick up that sound.
I suspect it might have to do with the fact that it's really close to the audio source (my face). Is this true, and can I expect this if I buy another "lapel" mic? What is this property of only picking up really close sounds called?