Vintage wrote:
Actually, this is an interesting question: when is a pressure transducer
a

microphone? Is it a function of its intended use, its frequency response,
its
pressure range, etc?




Every microphone is a pressure transducer......

But not every pressure transducer is a microphone.

Then again, not every microphone is a pressure transducer. Consider
this: http://www.bksv.com/default.asp?ID=4000
An accelerometer can be used as a mic.