| 英文摘要 |
To enhance noise mitigation in land transportation systems, construction projects, and other noise-related issues, the Ministry of Environment has invested in smart technology collaboration and evaluation research to optimize manpower efficiency and improve enforcement effectiveness. This project employs microphone arrays and computer modeling for research purposes. The microphone arrays underwent both semi-anechoic chamber testing and field measurements in land transportation systems, vehicle testing grounds, entertainment venues, and commercial establishments. Additionally, the measurement process and results were used to review and refine regulatory frameworks. Findings from three land transportation system measurement sites indicate that microphone arrays effectively assist in distinguishing noise responsibility. Moreover, Class 1 sound level meter measurements and computer model simulations exhibited a deviation of within ±3 dB(A), with an overall consistent trend, demonstrating the reliability of the computer model. Future research may further explore different coexisting scenarios and international advancements in smart technology applications for collaborative studies.
In recent years, drone applications have become increasingly common, and their operational noise has emerged as a noise source. This project has compiled the latest regulations, management guidelines, and current developments in drone noise control. Austria and the European Union have already established permissible noise levels and measurement methods for drones, which could serve as references for Taiwan. Additionally, this project has reviewed international trends in sound-based photo enforcement, quiet zone implementation strategies, and residential noise quality assessments. New York State in the United States and Kensington and Chelsea in the United Kingdom are currently enforcing noise regulations using noise meter measurement systems, while France is undergoing statutory type certification for microphone array measurement systems. The establishment of quiet zones requires noise mapping to identify areas requiring noise reduction, preventing further noise intrusion before formulating action plans. Most countries adopt LAeq as the primary residential noise quality assessment metric, with daytime noise levels around 55 dB(A) and nighttime levels around 45 dB(A).
This project has successfully completed the feasibility study and field installation testing of microphone arrays mounted on multi-purpose smart poles. The microphone arrays effectively identify and provide evidence for the noisiest vehicles. By integrating with 5G smart poles and utilizing resource-sharing strategies, installation costs can be significantly reduced. Through smart technology, the project aims to enhance the quality of the living environment.
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