HRTF . METHOD FOR INTERPOLATING HRTF AND APPARATUS FOR OUTPUTING AUDIO SIGNAL USING THE INTERPOLATED HRTF.

摘要

The present invention relates to a head related transfer function (HRTF) interpolation method applied to audio output, and an audio output device applying the same. The HRTF interpolation method comprises the following steps: receiving HRTF data corresponding to a spot where an altitude angle and an azimuthal angle intersects, and receiving interaural level difference (ILD) data for a spot where the HRTF data exists; creating HRTF interpolation signals corresponding to the altitude angle (Φ) at a sound localization spot; calculating ILD variation to the azimuthal angle (θ) of the sound localization spot; and creating a final HRTF interpolation signal corresponding to the sound localization spot (θ, Φ).