ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,432,517, issued on Sept. 30, was assigned to Dirac Research AB (Uppsala, Sweden).

"HRTF pre-processing for audio applications" was invented by Viktor Gunnarsson (Uppsala, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a method and corresponding system for processing a set including Head-Related Transfer Functions, HRTFs, for at least two different directions of sound incidence to enable improved generation, modeling or simulation of ear signals corresponding to a diffuse sound field. For each direction of sound incidence to the head, a left-ear HRTF represents the transfer function from a sound source to the left ear, and a rig...