Dynamic Audio Distribution from Camera-Detected User Positions
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Solution Overview
Problem
Existing audio reproduction systems do not adapt to the actual positions of users in a room, leading to suboptimal acoustic experiences, especially when multiple users are present and their positions change.
Innovation Solution
An audio stream management method that uses a camera to detect user positions, calculates an optimal bearing angle, and adjusts the audio distribution based on this angle to enhance the acoustic experience dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed theoretical listening position is assumed for audio distribution, then the system configuration is simplified, but the acoustic experience deteriorates when users are not at that position
Solution Approach 1:
The audio distribution system transitions from a static configuration based on a fixed theoretical listening position to a dynamic system that continuously adapts to actual user positions. The camera captures real-time user positions, and the mixing means adjust audio distribution dynamically based on detected positions, making the system flexible and adaptive to changing conditions.
Solution Approach 2:
The system changes the distribution parameters of audio channels based on detected user positions. Instead of using fixed parameters, the mixing means adjust the audio distribution parameters dynamically according to the actual positions of users in the room, allowing optimal acoustic experience for different user configurations.
2Adaptability or versatility
If the audio system adapts to multiple user positions, then the acoustic experience improves, but the system complexity increases due to position detection and dynamic adjustment
Solution Approach 1:
A camera is introduced as an intermediary device to detect user positions in the room. The camera captures images, and the processing means extract position information from these images to control the audio distribution. This intermediary simplifies the overall system by using a common device (camera) to bridge the gap between user positions and audio configuration.
Solution Approach 2:
The system automatically detects user positions and adjusts audio distribution without requiring manual calibration or user intervention. The camera continuously monitors the room, and the processing means automatically calculate optimal audio distribution based on detected positions, making the system self-configuring and eliminating complex manual setup procedures.
3Productivity
If real-time user position detection is implemented, then the acoustic experience adapts dynamically, but the processing requirements and system complexity increase
Solution Approach 1:
The system extracts only the essential position information from camera images, rather than processing complete image data. The processing means identify user positions and extract relevant spatial coordinates to determine optimal audio distribution, reducing processing complexity while maintaining real-time adaptation capability.
Data Source
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AI summary
The invention relates to a method for managing an audio stream played by a group of audio playback devices, said group being arranged in a given location. According to the invention, the method comprises the steps of: - Detecting, on at least one image, the user(s) present in the image and deducing, for each of said users, at least one characteristic piece of information regarding the user's position in said image, - Determining, at least from the various characteristic pieces of information, an optimal bearing angle (βopt), - Providing mixing means distributing the audio stream among the different audio playback devices of the group, a characteristic value of the optimal bearing angle so that the mixing means distribute the audio stream at least according to said value.