Method and apparatus for simulating outer ear free field transfer function

Abstract From the Canadian patent

An electroacoustic simulation method and apparatus for imitating electroacoustically the human outer ear having transmission properties corresponding to those of the human outer ear when exposed to sound in the free field is proposed wherein the physical acoustical causes of the outer ear the, head, the upper part of the body, the pinna rim and the, like, are represented mathematically by simple partial models and approximated in the form of electric circuits containing circuit elements such as high-pass filters low-pass filters, all-pass filters.... and the like with, the possibility to vary certain properties of the circuit elements continuously by varying the parameters so that arbitrary …