Dan Dugan wrote:
> Calibrating the input to the exact same gain is useful, but it
> doesn't give you a way to match the sensitivities of different
> mics--I think that has to be done acoustically. Since mics can't be
> fitted into a sound level meter calibrator, a tone at a measured
> distance seems to be all that remains.
Yep. The electrical calibration method that I explained would of
course only make sense when one used the same microphone in exactly
the same arrangement (a setup in that only the recorder is being
exchanged). I think that this is what Rob D. is actually doing.
If one also wants to compare different microphones, things would get
even more complicated. I think that one would need a professional
anechoic test chamber to get reliable results. Otherwise, the room
acoustics (reflections from other directions) would introduce errors
that are caused by the different pick-up patterns of the various
microphones.
Regards,
Raimund
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