The Tympan includes microphones on its circuit board, but you can also use external microphones via its headphone jack or via its “line-in” through-holes. I’ve calibrated three microphones so far.
- Sony ECM-CS10, which is a lapel microphone
- Knowles SPH1642, which are the mics on the Tympan PCB)
- Knowles EK-23024, which is a hearing aid microphone.
The results of my calibration of these three mics are shown below.
You can see how I did the calibration here: http://openaudio.blogspot.com/2017/05/calibrating-microphones-with-tympan.html
What other kinds of microphones are interesting to people?