Acoustic Rendering Adaptation for Image-Based Objects
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Solution Overview
Problem
In virtual and augmented reality, the acoustic rendering of audio sources often mismatch the visual rendering of image-based scenes, leading to a less immersive experience due to the lack of soundwave interaction with scene objects, which is not effectively addressed by existing techniques designed for 3D graphics-based scenes.
Innovation Solution
Generating metadata that models the geometry and acoustic properties of image-based objects, allowing for spatial audio rendering that aligns with the visual rendering, thereby simulating the interaction of soundwaves with objects in the scene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate audio source is rendered in conjunction with the visual rendering of an image-based scene, then the audio can be provided independently, but the acoustic rendering mismatches the visual rendering and reduces immersion
Solution Approach 1:
The patent introduces an intermediary process that analyzes the visual scene data (including object geometries, materials, and spatial relationships) and uses it to configure the acoustic rendering parameters. This intermediary step ensures that the independently rendered audio source adapts to match the visual scene characteristics, resolving the mismatch between separate audio and visual renderings while maintaining independence.
2Device complexity
If soundwaves do not interact with objects in the scene, then the rendering process is simpler, but the acoustic rendering appears unrealistic and reduces immersion
Solution Approach 1:
The patent performs preliminary analysis of the visual scene to extract object geometries, materials, and spatial relationships before the acoustic rendering process. This pre-processing step creates a data structure that enables realistic soundwave interactions without adding complexity during the actual rendering phase, as the interaction parameters are pre-determined from the visual scene analysis.
3Adaptability or versatility
If existing techniques for 3D graphics-based scenes are applied to image-based scenes, then the rendering pipeline remains consistent, but the techniques do not effectively address the lack of soundwave interaction with scene objects
Solution Approach 1:
The patent adapts the rendering approach by changing the parameters used to describe the scene for acoustic purposes. Instead of using vertex-based 3D graphics data, the system extracts and uses image-based scene parameters such as object boundaries, material properties, and spatial relationships directly from the visual rendering data. This parameter transformation enables soundwave interaction while maintaining compatibility with the image-based rendering pipeline.
Data Source
AI summary
A method and processor system are provided for adapting an acoustic rendering of an audio source to a visual rendering of an image-based object. Such visual rendering may be in virtual-reality (VR) or in augmented-reality (AR). The image-based object may be modelled, and an audio object representing the modelled object may be established in an acoustic scene containing the audio source and being associated with the visual rendering. The audio object may be assigned a reverberant and/or absorbent property, and the acoustic rendering may be adapted to the audio object. This way, the acoustic rendering may be adapted to image-based objects, and a user may perceive the acoustic rendering as better matching the visual rendering.