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原文传递 Field Evaluation of Reflected Noise from a Single Noise Barrier

题名：	Field Evaluation of Reflected Noise from a Single Noise Barrier
责任者：	National Academies of Sciences, Engineering, and Medicine; Transportation Research Board; National Cooperative Highway Research Program; William Bowlby; Rennie Williamson; Darlene Reiter; Kenneth Kaliski; Karl Washburn; Judy Rochat; Jack Meighan; Keith Yoerg; Ahmed El-Aassar; Harvey Knauer; Gonzalo Sanchez; Douglas Barrett
关键词：	Transportation and Infrastructure — Design Transportation and Infrastructure — Environment
学科分类：	暂无分类
摘要：	TRB's National Cooperative Highway Research Program (NCHRP) Research Report 886: Field Evaluation of Reflected Noise from a Single Noise Barrier analyzes the characteristics of sound reflected from a noise barrier to the opposite side of a highway. State departments of transportation (DOTs) periodically receive complaints from residents about increases in traffic noise that residents believe are the result of noise reflected from a new noise barrier added across the roadway from them. Currently available analytical tools are limited in their ability to evaluate reflected noise and some of the subtle changes in the quality of sound that can occur when it is reflected. Therefore, it is a challenge for DOTs to determine conclusively if complaints about reflected noise are the result of actual or perceived changes in noise characteristics, and to identify locations where absorptive surface treatments could be beneficial. The study compares reflected noise from sound-reflecting barriers and from barriers with a sound-absorptive surface. It examines both the levels and frequencies of reflected noise to better understand how reflected noise is experienced by communities. The full report, which includes four detailed appendices, is 27 MB and may take time to download. It is accompanied by several appendices, a tool, and a guide: Appendix D: Using the Barrier Reflections Screening Tool Appendix E: Phase 1 (Sound-Reflecting Barriers)—Detailed Protocols and Results Appendix F: Photographs, Phase 1 (Sound-Reflecting Barriers) Measurement Sites Appendix G: Photographs, Phase 2 (Sound-Absorbing Barriers) Measurement Sites Barrier Reflections Screening Tool Layperson Guide - "Reflected Sound from Highway Noise Barriers" A presentation file that summarizes the research also is available on the report project page.
出版机构：	Transportation Research Board
提交日期：	2018
报告类型：	科技报告
资源类型：	科技（咨询、行业）报告
初始创建时间：	2018