What are the parameters of transducer that I can get from an Anechoic chamber? I have a bunch of piezo elements, that I want to use as "Mics", for that I will test their reaction in a Anechoic chamber. My question is what the are characteristics that I can measure that describe those elements and can help me analysing the generated sound later, I already have in mind the following :


Amplitude response
Phase response


Thanks for any help in advance !
Mainly frequency response as a function of the 3D direction of incidence. Also known as "polar pattern" or "polar balloon". You can also look at distortion and noise but that's more tricky.