Lighting Device Audio Intelligibility Feedback
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Solution Overview
Problem
Current technologies fail to efficiently determine and convey the intelligibility of audio signals in real-time, particularly in open office settings and entertainment venues, as they require high processing power for semantic analysis and do not effectively address the need for feedback on acoustic propagation and intelligibility.
Innovation Solution
A lighting device comprising a microphone and a processor that detects audio signals, determines intelligibility by comparing acoustic characteristics of repeating audio features to a baseline value, and conveys this information through lighting characteristics, such as color or intensity, without requiring semantic analysis or high processing power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If semantic analysis is used to determine audio intelligibility, then measurement precision is improved, but device complexity and processing power requirements increase
Solution Approach 1:
The patent extracts only the essential acoustic characteristics (SPL, frequency, sound quality, rhythm) needed for intelligibility assessment, removing the need for full semantic analysis. This selective extraction maintains measurement precision while significantly reducing processing complexity by focusing only on relevant acoustic parameters.
Solution Approach 2:
The system performs partial analysis by examining only specific acoustic features rather than complete semantic content. By analyzing repeating audio features and their acoustic characteristics partially, the system achieves sufficient intelligibility determination without the excessive processing power required for full semantic analysis.
2Speed
If real-time audio analysis is performed, then feedback speed is improved, but energy consumption increases
Solution Approach 1:
The system performs partial analysis on repeating audio features only, examining specific acoustic characteristics rather than processing the entire audio signal in real-time. This approach maintains fast feedback response by focusing computational resources on key repeating features while reducing overall energy consumption.
Solution Approach 2:
The system establishes baseline values in advance for comparison, allowing real-time determination of intelligibility through simple threshold comparisons rather than complex real-time analysis. This preliminary setup enables rapid feedback with minimal ongoing energy expenditure.
Data Source
AI summary
The invention provides a lighting device for determining and conveying an intelligibility of an audio signal, wherein the audio signal comprises a plurality of occurrences of a repeating audio feature, wherein each occurrence of the repeating audio feature comprises a respective value of an acoustic characteristic, wherein the lighting device comprises: a light source; a microphone for detecting the audio signal; a processor configured to: receive the audio signal from the microphone, determine a baseline value based on said audio signal, determine a positive intelligibility of the audio signal if the last occurrence of the repeating audio feature comprises a respective value of the acoustic characteristic being at least equal to the baseline value, or determine a negative intelligibility of the audio signal if the last occurrence of the repeating audio feature comprises a respective value of the acoustic characteristic being less than the baseline value, and control the light source to convey the determined positive and/or negative intelligibility of the audio signal via a lighting characteristic.