Patent ID: 11962984
Assignee: GOOGLE LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A crosstalk cancellation filter set, the crosstalk cancellation filter set being configured for use in delivering binaural signals to human ears in an obstructed free field, the crosstalk cancellation filter set comprising:
a pressure matching system configured to perform spatial filtering or sound field control based on an acoustic shadowing effect caused by a human head and a time delay effect caused by the human head; and
a spherical head model in communication with the pressure matching system, wherein:
the crosstalk cancellation filter set is configured to take acoustic advantage of scattering effects and occlusional effects caused by violations to a free-field assumption by the human head, thereby delivering improved crosstalk cancellation to a listener without use of headphones; and
a propagation is computed considering a driver and control points using a numerical approximation of a Rayleigh solution for an acoustic pressure on a rigid sphere.