MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202617077658 A) filed by Dolby International Ab on June 23, 2026, for Methods, Apparatus, And Systems For Environment Type Modelling Of Early Reflection Gain(s).
Inventors include Terentiv, Leon; Fersch, Christof Joseph; Fischer, Daniel; and Setiawan, Panji.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: Methods, apparatus, programs, and storage media for estimating a gain factor for early reflections of an audio source in a three-dimensional audio scene are described. The method includes obtaining a representation of the three-dimensional audio scene, information on a listener location of a listener in the three-dimensional audio scene, and information on an audio source location of the audio source in the three-dimensional audio scene. A predefined quantity of rays for a ray direction pattern and a quantity of points for applying the ray direction pattern in a proximity to a region connecting the audio source location and the listener location is obtained. An indication for a quantity of valid early reflection trajectories for the audio source and the listener is determined based on the representation of the three-dimensional audio scene, the ray direction pattern, the quantity of points, the listener location and the audio source location. The gain factor is determined based on the indication for the quantity of valid early reflection trajectories and a total quantity of rays, wherein the total quantity of rays is determined based on the predefined quantity of rays and the quantity of points.
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