Cuboctahedral Speaker Array for Immersive 3D Audio
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Solution Overview
Problem
Current surround sound models rely on mathematical simulations, leading to an unbalanced multi-speaker mix and an inadequate immersive experience for listeners, as they fail to accurately represent the three-dimensional sound field.
Innovation Solution
A system featuring microphones positioned in a cuboctahedral arrangement around an audio source, with a central audio processing unit wirelessly transmitting processed signals to speakers positioned in a corresponding cuboctahedral arrangement, creating a 360-degree spherical audio space that accurately replicates the sound environment from any angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If mathematical simulation is used to create surround sound, then the system complexity is reduced, but the sound field representation accuracy deteriorates
Solution Approach 1:
The patent replaces mathematical/psychoacoustic simulation with actual physical acoustic measurement. Microphones are positioned in a cuboctahedral arrangement to capture real sound fields, and speakers are arranged in the same geometry to reproduce the measured acoustic environment, substituting computational models with physical acoustic replication.
Solution Approach 2:
The patent transitions from traditional stereo (2D) sound representation to three-dimensional surround sound by using a cuboctahedral arrangement of 12 speakers around the listener. This spatial distribution creates a complete 360-degree sound field envelope, adding vertical and radial dimensions to the audio experience.
2Ease of manufacture
If traditional surround sound models are used, then the implementation is simpler, but the immersive experience quality deteriorates
Solution Approach 1:
The sound field is segmented into 12 discrete directional channels corresponding to the 12 speakers in the cuboctahedral arrangement. Each speaker handles a specific spatial sector, allowing independent control and optimization of sound distribution across different directions, thereby enhancing immersive quality while maintaining manageable system complexity.
3Device complexity
If stereo mixing is used for multi-speaker systems, then the processing is simpler, but the sound space quality deteriorates
Solution Approach 1:
The patent applies local quality by assigning different audio signals to different spatial locations rather than using uniform stereo mixing. Each of the 12 speakers receives specifically processed audio content tailored to its directional position, creating localized sound sources that accurately represent the three-dimensional sound field structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a more immersive audio experience by using actual acoustics instead of psychoacoustics, ensuring accurate representation of sound location and characteristics, allowing listeners to perceive sound from any direction as if they were in the original environment, enhancing the realism of virtual reality and live broadcasts.
Implementation Method 1
microphones positioned in multiple positions on or proximate an audio source subject... Speakers are positioned relative to each other in a cuboctahedral arrangement around an acoustic point of reference... creating a 360-degree spherical audio space that accurately replicates the sound environment
Data Source
AI summary
A system for generating surround sound is disclosed. The system may be used for replicating a sonic space that can be reproduced around an end user listener. Applications may include general rebroadcasting of an event or use in a virtual reality setting. The sound captured may be live sound or a recorded sound. The system includes microphones positioned in multiple positions on or proximate an audio source subject. Speakers are positioned relative to each other in a cuboctahedral arrangement around an acoustic point of reference. An audio processing unit connected wirelessly to the microphones processes individual signals from the microphones and transmits the individual signals to the plurality of speakers.