多通道分析技术在交通噪声影响测算中的应用

Applications of Multi-channel Analysis in the Traffic Noise Impact Calculation

运用多通道分析技术同步监测道路周围不同点位的交通噪声，分析在机动车经过时各个点位的瞬时声级差值，计算道路交通噪声对临近区域声环境的实际影响．实验结果表明，一排平行式多层建筑对交通噪声的阻隔效果达到15～20dB；点式建筑群或纵向建筑群在深入40m时对噪声的阻隔效果达到10～15dB．

The multi-channel technology was used to simultaneously monitor the traffic noises from different spots around the roads and analyze instant sound level differences of each point when the vehicles are passing, so that the actual impacts of road traffic noises can be calculated in the surrounding acoustic environment. Based on experimental results, a row of parallel multi-storey buildings are able to block the traffic noise from 15 to 20 dB. Insular structure buildings orthogonal to the main road are able to block the noise up to 10-15 dB via 40 meters depth.