IMPROVEMENT OF FRONT-BACK SOUND LOCALIZATION CHARACTERISTICS IN HEADPHONE-BASED 3D SOUND GENERATION

摘要

A binaural filtering method using HRTF Database is generally used to make the headphone-based 3D sound. But it can make some confusion between front and back directions or between up and down directions due to the non-individual HRTF depending on each listener. To reduce the confusion of sound image localization, we propose a new method to boost the spectral cue by modifying HRTF spectra with spectrum difference between front and back directions. Informal listening tests show that the proposed method improves the front-back sound localization characteristics much better than the conventional methods.