某火车站售票厅吸声降噪

王世龙, 路跻泽, 张晓排, 温博

Noise reduction in the ticket hall of the railway station

Shilong Wang, Jize Lu, Xiaopai Zhang, Bo Wen

表1 售票窗口处线性声压级（售票员讲话） (dB)

Table 1 Linear sound pressure levels at the ticket window ( conductors' speech)

频率(Hz) 100 125 160 200 250 315 400 声压级(dB) 52.0 52.2 56.4 60.7 65.6 66.2 72.0 频率(Hz) 500 630 800 1000 1250 1600 2000 声压级(dB) 77.2 75.0 72.5 65.6 62.3 61.4 57.2 频率(Hz) 2500 3150 4000 5000 6300 8000 10000 声压级(dB) 55.3 55.9 51.4 48.5 44.5 45.4 42.3