crystal microphone

How Piezo Electric Crystal works? What are the different axes of crystal?

The Piezo Electric Crystal is used to measure pressure. Piezo is an Italian word meaning pressure. It is very accurate in measurement. A piezo crystal is a transducer which can convert pressure into electrical signal. It is an active transducer. It is found that Rochelle salt and Tourmaline substances.
Read MoreHow Piezo Electric Crystal works? What are the different axes of crystal?