Measuring the piezo transducer with oscilloscope Answered
I am conecting a piezo disc as a microphone to pick up vibrations.
.The problemm is when I measure the signal with osciloscope I am getting a messy and modified one with many noise
If I am measuring it with PC oscilloscope (threw the sound card mic input) I am gatting a clean desirable signal
What is the true signal and what I am doing bad with the oscilloscope.