Evaluation of an auditory source width prediction model based on the interaural cross-correlation coefficient

A model based on the interaural cross-correlation coefficient (IACC) has been developed that aims to predict the perceived source width of a wide range of sounds. The following factors differentiate it from more commonly used IACC-based measurements: the use of a running measurement to quantify variations in width over time; half-wave rectification and low pass filtering of the input signal to mimic the breakdown of phase locking in the ear; compensation for the frequency and loudness dependency of perceived width; combination of a model of perceived location with a model of perceived width; and conversion of the results to an intuitive scale. Objective and subjective methods have been used to evaluate the accuracy and limitations of the resulting measurement model