An Artificial Head

Abstract

An artificial head has been made of a cranium and soft plastic material. The model is used to study the interaural intensity difference as a function of frequency and azimuth, i.e. the angle of incidence of the sound towards the head. The interaural intensity difference is found to be a very irregular function and sensitive to small changes in the experimental conditions. This gives an explanation for the difficulties of reproducing the results of free field investigations.