The physical origin and physiological coding of pinna-based spectral cues

This thesis investigates both the physical origin and the physiological coding of pinna-based spectral features observed in experimental Head-Related Transfer Functions (HRTFs). An experimental method for measuring HRTFs using a Knowles Electronics Manikin for Acoustic Research (KEMAR) is presented. The method includes a technique for moulding individualised pinnae to be fitted on to the KEMAR's head. Experimental HRTF data obtained with this method are shown and analysed. The most remarkable pinna-based spectral features are identified and their dependency on source location is characterised, particularly for elevation-dependent spectral notches. [Continues.]