Thank you for your reply, but that is not what I am looking for. I already know that ifixit guide but it in no way specifies where the different components within the top and bottom modules are located.
In fact I have already gone further than the ifixit guide and have opened both modules as well and taken out their circuit boards. There are different components soldered to these boards but it is difficult to tell which one the microphone is. This should be better documented.