Spatial Audio Direction Vector for Depth and Direction Accuracy
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Solution Overview
Problem
Current audio visual technologies face challenges in accurately providing sound direction and depth information, particularly in multi-channel and virtual reality environments, leading to an unsatisfactory user experience.
Innovation Solution
A method and apparatus for acquiring a spatial audio direction vector by determining the position of a sound source, setting parameters such as human response time and tolerance percentage, and processing sound signals to obtain a spatial audio direction vector, which is used to enhance the audio-visual experience by adjusting the relationship between sound sources and users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional multi-channel audio systems are used, then sound direction information can be provided, but the accuracy of sound direction and depth information is insufficient
Solution Approach 1:
The patent transitions from traditional 2D stereo audio to 3D spatial audio by introducing vertical dimension information through height channels. The system uses multiple speakers arranged in three-dimensional space (including overhead speakers) to create spatial audio direction vectors that provide accurate depth and direction information, resolving the contradiction between measurement precision and reliability.
Solution Approach 2:
The patent introduces spatial audio direction vectors as an intermediary element that mediates between the audio signal and the listener's perception. These vectors mathematically represent the three-dimensional position and movement of sound sources, enabling accurate sound direction information to be provided and significantly improving user experience satisfaction in virtual reality and multi-channel audio systems.
2Adaptability or versatility
If more speakers are added to improve surround sound quality, then audio coverage is enhanced, but system complexity increases
Solution Approach 1:
The patent creates a universal spatial audio processing system that can work with different numbers and configurations of speakers. The spatial audio direction vector calculation methodology is adaptable to various multi-channel configurations (5.1, 7.1, or more channels), allowing the system to provide accurate 3D audio positioning without requiring a fixed complex speaker arrangement, thus enhancing audio coverage while managing system complexity.
3Loss of information
If spatial audio processing is implemented, then sound direction information is provided, but computational complexity increases
Solution Approach 1:
The patent segments the complex spatial audio processing into distinct computational stages: first calculating individual spatial audio direction vectors for each sound source, then combining these vectors to determine final positioning. This segmentation of the processing methodology reduces computational complexity while preserving spatial information, making the system feasible for real-time implementation in virtual reality and multi-channel audio applications.
Data Source
AI summary
Method, equipment and apparatus for acquiring a spatial audio direction vector, the method including: determining a position of a sound source in a multi-sound system; setting a parameter comprising: a human response time Δt and a tolerance percentage δ; acquiring a sound signal from the sound source; and processing the sound signal by using the parameter and acquiring a corresponding spatial audio direction vector {right arrow over (E)} within each time interval Δt. A proportional constant D is determined according to a modulus of a spatial audio direction vector {right arrow over (E)}, and provides spatial information of depth for a virtual image corresponding to a multi-tone audio signal. A vector angle θE the spatial audio direction vector {right arrow over (E)} provides spatial information of direction for the virtual image corresponding to the multi-tone audio signal, to improve viewer's viewing experience. This invention figures out how to enrich audience experience by applying the spatial audio directional vector to glasses-free 3D display.