Spatial Audio Virtualization for Conference Calls
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Solution Overview
Problem
Current conference call solutions fail to provide a realistic spatial audio experience, as voices are presented in mono and do not follow the position of the speaker, lacking the directional cues of in-person meetings, and they cannot effectively differentiate between close and distant groups for enhanced emotional feedback.
Innovation Solution
A computerized process that uses spatial audio filters to position and mix audio inputs from multiple participants, allowing hosts or users to select seating arrangements and audio profiles, creating distinct spatial audio environments for close and distant groups, simulating real-world sound experiences by directing sound sources to their actual origins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If voices are mixed in mono for all participants, then device complexity is reduced, but spatial audio realism and conversation intelligibility deteriorate
Solution Approach 1:
The patent segments the audio processing by creating separate spatial audio profiles for different participant groups (close proximity group vs. outside groups). Each group receives processed audio with appropriate spatial characteristics, allowing the system to manage complexity through structured division while maintaining spatial realism.
Solution Approach 2:
The patent applies different spatial audio processing qualities to different participant groups. Close proximity participants receive audio processed with characteristics that preserve conversation intelligibility, while outside groups receive audio with spatial characteristics that convey ambient atmosphere without intimate detail.
2Adaptability or versatility
If all participants are visible in video windows, then adaptability is improved, but spatial audio correspondence deteriorates
Solution Approach 1:
The patent resolves the conflict between video arrangement flexibility and spatial audio correspondence by adding a spatial audio dimension that operates independently from the two-dimensional video window arrangement. Audio is positioned in a virtual three-dimensional space that corresponds to the physical meeting layout, while video windows can be freely arranged without affecting audio spatial relationships.
3Manufacturing precision
If spatial audio filters are applied to each participant, then conversation intelligibility is improved, but device complexity increases
Solution Approach 1:
The patent reduces system complexity by implementing universal spatial audio processing functions that can be applied to multiple participants simultaneously. The spatial audio processing block uses common algorithms and parameters for all participants, allowing the system to maintain high conversation intelligibility through consistent spatial filtering while avoiding the complexity of individualized processing for each participant.
4Adaptability or versatility
If multiple spatial audio profiles are created for different groups, then emotional feedback is enhanced, but loss of information increases
Solution Approach 1:
The patent extracts and separates audio information into different spatial profiles based on participant groupings. Close proximity group audio is extracted with full conversational detail, while outside group audio is extracted with spatial and atmospheric characteristics. This selective extraction enhances emotional feedback by preserving relevant information for each group while filtering out unnecessary details.
Data Source
AI summary
The present invention relates to a device and a computerized process for creating a virtual spatial audio representation of sound sources within a conference call application, which processes individual user voice or audio inputs according to a host or user selected spatial position, combining it with other users virtualized spatial audio positions, to simulate the sound properties of a real world in-person meeting, conference, convention, or event. This computerized process is embodied by software that can be used to process multiple incoming audio sources from multiple platform participants with different spatial audio filters to create a unique spatial positioning for each participant. It should be further noted that a single host could control the spatial positioning of all participants on the platform, or each participant could select from a defined set of available seats or positions based on their own personal preferences.