loft:
If i stick a piezo straight to my didgeridoo, will i not be bypassing the audio and going straight to the vibration of the wood, will this not simplify the signal and therefore the processing?
To be read by an arduino it must be converted to an electrical analog signal, no matter what kind of transducer is used. So my answer is no it will not be eaiser and probably not even possible with an Arduino. Others may have other opinions but again the arduino is great at many things but digital signal processing is not one of them.
Lefty