I have two electret microphones. I would like to connect them to my computer to record stereo sound. I've checked a couple videos on YouTube and people there show they connect them "directly": signal from the first mic to the right channel and from the second mic to the left channel. Two "-" wires from two microphones are connected to the ground. Something like this:
But also I've checked Wiki and in the scheme provided there is shown that electret microphone should be connected to some voltage source.
So, now I am a bit confused. I am not sure whether I need voltage source or not. If connection without voltage source is possible what pros and cons does it have?
So the main question is in the title: How to properly connect two electret microphones to computer to be able to record stereo sound?
UPD: Microphone datasheet