Evaluation of a Matlab-based Virtual Audio Simulator with HRTF-Synthesis and Headphone Equalization

Abstract

Virtual audio simulators are the basic tools for localization experiments focusing on the parameters of the applied HRTFs. This paper presents a software solution capable of playback monotic wave files, setting the individual ITD information based on head-diameter data, HRTF filtering in 1-degree spatial resolution for static and dynamic sound sources and record output stereo wave files for headphone playback. Furthermore, a headphone equalization tool is implemented based on measured and averaged transfer functions. Based on this, generated IIR or FIR equalization filters can be applied on the sound data for scientific purposes.