Perceptual Evaluation of Variable-Orientation Binaural Room Impulse Response Rendering

摘要

In the current effort to improve sound for virtual auditory environments with the upcoming affordable head mounted display solutions, realism and audio quality in head-tracked binaural rendering is again becoming important. While rendering based on static artificial-head measurements achieve high audio quality and externalization, the realism lacks interactivity with changes of the head orientation. Motion-tracked binaural (MTB) has been presented as a head-tracked rendering algorithm for recordings made with circular arrays on rigid spheres. In this contribution, we investigate the algorithm proposed for MTB rendering and adopt it for variable-orientation rendering using binaural room impulse responses (BRIR) measured for multiple, discrete orientations of an artificial head. The experiment in particular investigates the perceptual implications of the angular resolution of the multi-orientation BRIR sets and the time/frequency-resolution of the algorithm.