Rendering of occluded sound sources

By calculating distance attenuation and diffraction EQ for each segment of a diffraction path using the active extent of the sound source, the method addresses the challenges of inaccurate diffraction path calculations in XR, resulting in a more realistic and balanced sound rendering for occluded sound sources.

WO2026150069A1PCT designated stage Publication Date: 2026-07-16TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Filing Date
2026-01-09
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing methods for rendering occluded sound sources with an extent in extended reality (XR) environments face challenges in accurately calculating diffraction paths and distance attenuation, leading to unrealistic sound rendering due to the use of a single representative position for extended sound sources, which can result in incorrect distance attenuation and imbalance between diffraction paths.

Method used

A method that calculates distance attenuation and diffraction EQ for each segment of a diffraction path by considering the active extent of the sound source, using a point on the extent closest to the diffraction point, and applying individual segment attenuations to render a more accurate and balanced sound effect.

Benefits of technology

This approach provides a more realistic rendering of occluded sound sources by accurately determining the absolute level of diffracted sound and balancing individual components, enhancing the overall sound experience in XR environments.

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Abstract

A method for rendering a sound source having an extent, wherein an object is positioned between at least a portion of the extent and a listening position. The method includes obtaining first diffraction path information regarding a first diffraction path between the sound source and the listening position and that goes around the object, the first diffraction path information comprises first diffraction point information regarding a first diffraction point on the first diffraction path. The method also includes calculating a first distance attenuation and / or a first diffraction EQ for the first diffraction path. The method also includes using the first distance attenuation and / or the first diffraction EQ in a process for rendering the sound source.
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