I'm working on a medical research project where we're looking at the changing resonances in femur bones during hip replacement operations. Some surgeons use the increasing pitch of the bone resonance to tell them when to stop hammering/reaming the shaft of the feamur. If they apply too much pressure when creating the cavity for the replacement hip, they risk fracturing the femur.
Basically, I've recorded a number of these changing resonances using a bone conduction mic and now I have a number spreadsheets with one column listing frequencies in 5Hz bands and 3 columns showing the amplitude of that frequency when the bone is loose, medium to tight (referring to the tension of the reamer/chisel creating a cavity for the replacement joint).
I'm coming at this more from a sound perspective so I would really appreciate some advice from anyone with a handle on stats and predictive modelling, I'm trying to find a pattern to the change in frequency which is consistent in all cases.
Any advice would be very much appreciated.