Spatial Audio Personalization With Virtual Acoustic Modeling
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Solution Overview
Problem
Implementing spatial audio outdoors in open environments is challenging due to the Just Noticeable Difference (JND) of Interaural Time Difference (ITD) and Interaural Level Difference (ILD), leading to distorted sound perception and artificial effects.
Innovation Solution
A system that personalizes spatial audio content by determining the spatial positions of user devices within a real-world environment and adjusting sound intensity and time delay based on visual content, using a display device and server to model audio parameters in a virtual environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spatial audio is implemented in open outdoor environments using conventional speaker systems, then immersive sound experience is attempted, but sound perception becomes distorted and artificial effects occur due to JND of ITD and ILD
Solution Approach 1:
The system creates a virtual model copy of the outdoor environment and performs acoustic simulations in this virtual space to determine optimized audio parameters, then applies these parameters in the real outdoor setting. This copying approach allows testing and optimization without directly experimenting in the complex real outdoor acoustic environment.
Solution Approach 2:
The system performs preliminary acoustic simulations and calculations in a virtual environment before actual outdoor playback. By pre-determining optimal audio parameters through virtual modeling, the system avoids the need for real-time adjustments in the complex outdoor acoustic conditions.
2Adaptability or versatility
If audio parameters are adjusted based on user spatial positions in real-time, then personalized spatial audio experience is achieved, but system complexity increases
Solution Approach 1:
The system automatically tracks user device positions and performs real-time audio parameter adjustments without requiring manual intervention. The system serves itself by continuously monitoring spatial positions and autonomously optimizing audio output for each user's location.
Solution Approach 2:
The system continuously monitors user spatial positions and uses this feedback to dynamically adjust audio parameters. This closed-loop feedback mechanism enables real-time personalization while maintaining system manageability through automated control.
3Shape
If long delays are applied to audio content, then spatial positioning is attempted, but direction perception becomes distorted leading to artificial effects
Solution Approach 1:
The system dynamically adjusts audio parameters including time delays based on user spatial position and environmental acoustics. By optimizing delay parameters through virtual acoustic simulations, the system achieves accurate spatial positioning without exceeding perceptual thresholds that cause distortion.
Data Source
AI summary
Systems, methods, and apparatuses can playback audiovisual content having audio and visual content. These systems, methods, and apparatuses can playback the visual content to various viewers within a real-world environment. These systems, methods, and apparatuses can cause playback of the audio content on various real-world user devices that are associated with these viewers. These systems, methods, and apparatuses can personalize the audio content being played back by these real-world user devices to various spatial positions of these real-world user devices within the real-world environment.