Dynamic Audio Source Rescaling for Listener Movement in Extended Reality
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Solution Overview
Problem
Existing extended reality systems face challenges in maintaining an immersive audio experience due to static audio rendering that fails to account for dynamic changes in listener position and environmental modifications during soundfield reproduction, leading to reduced immersion and limited creative capabilities.
Innovation Solution
The system dynamically rescales audio elements based on listener movement and environmental changes within the virtual and physical playback locations, using metadata to identify audio element regions and adjust audio renderers accordingly, enabling more immersive soundfield reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If static audio rendering is used to initialize audio renderers, then the initial soundfield reproduction is improved, but the immersive experience deteriorates when listener position or environment changes dynamically
Solution Approach 1:
The patent implements dynamic audio rendering that continuously adapts to listener position changes and environmental modifications during soundfield reproduction. The system updates audio element positions and rescaling factors in real-time based on listener movement between regions, transforming the static initialization approach into a dynamic process that maintains immersion throughout the experience.
2Manufacturing precision
If audio renderers are initialized to account for differences between source and playback locations, then soundfield reproduction is improved, but creative capabilities are limited by static configuration
Solution Approach 1:
The system enables dynamic rescaling of audio elements during playback based on listener position and environmental changes, allowing creative soundfield reproduction that adapts to various virtual environments while maintaining the initial accurate setup. This dynamic approach preserves the content creator's intent while enabling versatility across different playback scenarios.
3Measurement precision
If one-to-one correspondence spacing is required between source and playback locations, then audio accuracy is maintained, but system versatility deteriorates
Solution Approach 1:
The patent implements dynamic rescaling factors that adjust the spatial parameters of audio elements based on the ratio between source location dimensions and playback location dimensions. This allows the system to maintain accurate audio localization while adapting to various playback space sizes, transforming the rigid one-to-one spacing requirement into a flexible parameter-based approach.
4Adaptability or versatility
If static rescaling is performed during renderer initialization, then playback location accommodation is improved, but immersion is reduced due to lack of dynamic adjustment
Solution Approach 1:
The system combines static rescaling during initialization with dynamic rescaling during playback, where audio elements are continuously adjusted based on listener position changes and environmental modifications. This dual approach maintains both playback location accommodation and immersive experience consistency throughout the entire playback session.
Data Source
AI summary
In general, techniques are described that enable a device to rescale audio sources in extended reality systems. The device may include a memory configured to store an audio element residing within a virtual environment representative of a source location. The device also includes processing circuitry communicatively coupled to the memory, and configured to determine that a listener has either or both of moved between virtual rooms within the virtual environment and moved between physical rooms within a playback location. The processing circuitry is also configured to rescale, responsive to determining that the listener has either or both of moved between the virtual rooms within the virtual environment and moved between the physical rooms within the playback location, the audio element to obtain a rescaled audio element, and reproduce the rescaled audio element to obtain an output audio signal.