The effects of drilling parameters on the acoustic drilling signature of the squamous temporal bone: A categorical multivariate regressive analysis

Abstract

This paper investigates the effects of drill speed, burr type, burr style, and stroke speed on the acoustics that are generated from a surgical drill when dissecting the squamous temporal bone region. Multivariate regression is used to analyse and predict the Mel frequency cepstrum of the audio that is generated during the procedure. It is seen that each of drilling parameters along with their higher order interaction terms has a significant affect on the acoustic drilling signature of the squamous temporal bone. Furthermore, it was established, for the first time, that a categorical multivariate regressive model could consistently predict the Mel frequency cepstrum of the squamous temporal bone with accuracy of 97.78% with only 2 seconds of audio training data. This represents a significant advance on previously reported work.