Li-Fi Speaker System Room Mapping and Audio Optimization
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Solution Overview
Problem
Non-technical users find it difficult to optimize speaker settings for a room and speaker location in networked speaker systems, which affects sound quality.
Innovation Solution
A device with a processor and LED-based Li-Fi communication system that determines room boundaries, speaker locations, and listener positions to optimize audio settings by emitting detection signals and correlating time differences with distances, allowing for the establishment of optimal speaker settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual optimization of speaker settings is performed, then sound quality can be optimized, but the process becomes complex and difficult for non-technical users
Solution Approach 1:
The system performs automatic room mapping and speaker optimization without requiring user intervention. The Li-Fi LEDs autonomously emit detection signals, measure room dimensions, identify wall locations, and calculate optimal speaker settings, enabling the system to service itself rather than requiring manual configuration by users
Solution Approach 2:
The system automatically adjusts speaker parameters such as volume, equalization, and timing based on measured room characteristics. By dynamically changing these parameters according to the mapped room geometry and acoustic properties, the system achieves optimized sound quality without manual user configuration
2Device complexity
If multiple functions are implemented using a single LED-based system, then device complexity is reduced, but the precision of individual functions may be compromised
Solution Approach 1:
The Li-Fi LED assembly performs multiple functions including wireless communication data transmission, room mapping by emitting detection signals, and listener detection. By consolidating these functions into a single integrated system rather than separate devices, the patent reduces overall system complexity while maintaining functional capabilities
Solution Approach 2:
The system uses periodic emission of detection signals at specific intervals to map room boundaries and detect walls. By timing the emission and reception of these periodic signals, the system achieves accurate distance measurements and room mapping despite using a multi-functional LED system
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
Enables easy optimization of speaker settings for improved sound quality by determining room dimensions and listener positions, allowing for tailored audio configurations based on the room's acoustics and listener preferences.
Implementation Method 1
at least a first light emitting diode (LED) associated with at least a first audio speaker to communicate with at least a second audio speaker using Li-Fi communication
Implementation Method 2
detect at least a first wall in an enclosure in which the light emitter is located
Implementation Method 3
determine plural time differences between respective times of receipt of plural received returns from respective return locations of respective detection signals, and respective transmission times of the respective detection signals
Data Source
AI summary
A networked speaker system communicates using Li-Fi. The LEDs implementing the Li-Fi may also have modes in which they are used to map the walls of a room in which the speakers are located, detect the locations of speakers in the room, and detect and classify listeners in the room. Based on this, waveform analysis may be applied to input audio to establish equalization and delays that are optimal for the room geometry, speaker locations, and listener locations.