Pseudo Random Correlation Analysis for Determination of the Stiffness of the Annular Ligament

This paper presents a new way of measuring the stiffness of the annular stapedial ligament during an operation in the middle ear. By using pseudo random signals as excitation signals it is possible to get a broadband result over the hearing frequency range. The authors introduce the algorithm and the implementation in an experimental model based on an ARM Cortex M4. They also present several results of measurements with the model and give a suggestion for best practice of implementing correlation analysis on a DSP platform.