Institute for Data Analysis and Visualization

Head Related Transfer Functions (HRTF's) characterize the transformation of a sound source to the sounds reaching the eardrums, and are central to binaural hearing. Because they are the result of wave propagation and difiraction, they can only be approzimated by finitely parameterized filters. The functional dependence of the HRTF on azimuth und elevation is described, the requirements for a model are discussed, and e&sting models are reviewed.