Layered Audio Space Description for Immersive VR Rendering
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Solution Overview
Problem
Current audio processing technologies in virtual and augmented reality struggle to create immersive audio experiences by accurately rendering sounds based on a user's location and movement within a virtual scene, often resulting in unrealistic audio interactions.
Innovation Solution
The use of a layered description of a space of interest in an audio scene, where a first layer contains common attribute values shared by multiple subspaces and a second layer contains individual attribute values, allows for efficient audio coding, transmission, and rendering of audio inputs based on the location of a subject within the scene, using processing circuitry to determine the subspaces and render audio outputs accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a layered description with common nodes and individual nodes is used to represent audio spaces, then the coding efficiency and transmission bandwidth are improved, but the processing complexity to retrieve and compute attribute values increases
Solution Approach 1:
The audio space description is segmented into two layers: a first layer containing common nodes with attribute values shared by multiple subspaces, and a second layer containing individual nodes for specific subspaces. This segmentation allows efficient representation by separating common information from specific information, reducing overall data redundancy while maintaining the ability to retrieve precise attributes for any subspace through a structured lookup process.
2Measurement precision
If individual attribute values are stored for each subspace, then the precision of audio rendering is improved, but the data transmission bandwidth and storage requirements increase
Solution Approach 1:
Attribute values that are common across multiple subspaces are merged into shared common nodes in the first layer. Instead of storing duplicate copies of the same attribute value in each individual subspace node, the system consolidates these repeated values into a single reference point that multiple subspaces can point to, thereby reducing total data quantity while preserving precise attribute information for accurate audio rendering.
3Adaptability or versatility
If a comprehensive description of all subspaces is provided, then the adaptability of audio rendering to different user locations is improved, but the processing time and computational resources increase
Solution Approach 1:
The system performs preliminary organization of audio space data by pre-structuring the layered description with common nodes and individual nodes before runtime processing. Attribute values are pre-computed and stored in the appropriate layer, and the hierarchical structure is established in advance, enabling rapid retrieval and processing during actual audio rendering without requiring complex computations at runtime for each user location query.
Data Source
AI summary
Aspects of the disclosure provide methods and apparatuses for audio processing. In some examples, an apparatus for media processing includes processing circuitry. The processing circuitry receive audio inputs associated with a layered description for a space of interest in an audio scene. The space of interest includes a plurality of subspaces. The layered description includes a first layer and a second layer. The first layer has a common node with a first value that is a common attribute value of two or more subspaces in the plurality of subspaces. The second layer has individual nodes respectively associated with each of the plurality of subspaces. The processing circuitry determines the plurality of subspaces of the space of interest based on the layered description, and renders an audio output based on the audio inputs in response to a location of a subject of the audio scene being in the space of interest.