Camera-Guided Audio Stream Mixing for Dynamic Listener Positioning
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Solution Overview
Problem
Existing audio playback systems do not adapt to the actual positions of users, providing suboptimal acoustic experiences, especially when multiple users are present and their positions change.
Innovation Solution
An audio stream management method using image acquisition to detect user positions, calculating optimal bearing angles, and adjusting the audio distribution based on these positions to enhance the acoustic experience dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the audio playback system uses a fixed theoretical listening position for spatialization, then the system configuration is simple, but the acoustic experience deteriorates when users are not at the theoretical position
Solution Approach 1:
The patent replaces manual calibration and mechanical adjustment systems with an automated image acquisition and processing system. The camera captures user positions, and software automatically calculates optimal audio distribution, eliminating the need for manual system configuration and adapting to user positions dynamically.
Solution Approach 2:
The system performs self-calibration by automatically detecting user positions through image acquisition and adjusting audio distribution accordingly. The mixing means autonomously adapts the audio stream based on detected user positions without requiring manual intervention or calibration steps.
2Adaptability or versatility
If the audio system is calibrated manually before use, then the initial setup is precise, but the system cannot adapt to dynamic user position changes
Solution Approach 1:
The system transitions from static manual calibration to dynamic automated adaptation. The image acquisition device continuously or periodically captures user positions, and the mixing means dynamically adjusts audio distribution in real-time based on detected positions, allowing the system to adapt to moving users without re-calibration.
Solution Approach 2:
The system performs preliminary automated calibration through image acquisition and processing before audio playback begins. By pre-detecting user positions and calculating optimal distribution parameters in advance, the system eliminates the need for time-consuming manual calibration during setup.
3Measurement precision
If the system assumes a fixed user position, then the mixing configuration is simple, but the acoustic rendering quality deteriorates for multiple or移动的 users
Solution Approach 1:
The patent introduces an image acquisition device as an intermediary to detect user positions indirectly through visual capture. This intermediary approach provides precise position information without requiring direct measurement devices, and the processing means extracts position data from images to guide audio distribution.
Data Source
AI summary
A method for managing an audio stream read by an audio playback equipment unit, said unit being arranged in a given place, includes the steps of: detecting on at least one image, the user(s) present on the image and deducing from this, for each of said users, at least one piece of information characteristic of the position of the user in question in said image; determining at least from the different characteristic information, an optimal bearing angle (βopt); and providing mixing means distributing the audio stream between the different audio playback equipment of the unit, a magnitude characteristic of the optimal bearing angle, such that the mixing means distribute the audio stream at least according to said value.