I am using the U6 and need to read the output of a ECM such that i can tell when something has gotten louder. Specifically I am tracking the sound cavitation makes as in water. I plan on doing this by running the mic across a pipe where one side has cavitation and the other side of the flow is a free stream. I need to acoustically distinguish between the two. My hypothesis is i will be able to tell from simply the loudness although it only sounds like little crackling but it typical more audible compared to the rest of the flow. So far I have a resistor and capacitor if series on the vs+ and output, and the gnd alone, I am using externally dc supply. So far the graphs is either extreme spastic or the center line of the signal is steadily increasing. How can I get a graph that i get a readable output from the sensor???? Please help!!! I am new to labjack and only have limited experience with labview.
Thanks in Advance