Finally, I have several microcontrollers and a heap of miscellaneous resistors, capacitors, etc. My intent is to have the microcontroller read sound from the microphone. HOWEVER, I'm having trouble finding information on how to do this. I keep finding explanations of how to wire a bare 2-pin electret microphone - which is not what I have. Or, it's not clear that's what I have - perhaps inside the mic housing there's a tiny transistor and/or resistor etc, or maybe it's just the electret piece. I've found like 5 images all showing how you should wire a bare electret, and none depicting how a consumer microphone IS wired.
How is this device to be used? What voltages and currents are provided to it, and what comes out representing signal? Is left used for power and right used for signal? Are they both wired together? Is one entirely unused? I assume I need to provide some amount of voltage to one or more lines? On which of the three lines do I listen for a signal, and how? Do I apply some combination of resistors and capacitors? Is it a sub-millivolt signal, or more like 500mV?
One of my assumptions is that at the jack, these microphones all operate the same, since they all get plugged into the same computer. It COULD be that the computer has some kind of autodetection mechanism which like, switches on different circuitry when you connect different mics, though.
Can anybody provide some guidance, here?