지향성을 고려한 야외공연장 옥외전달소음 예측식 비교·분석

김흥식; 조순형

doi:10.5050/KSNVE.2019.29.3.429

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저자정보

김흥식 (Honam University)
조순형 (Korea Environment Design)

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초록·키워드

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This study provides an appropriate estimation equation for outdoor transmission noise while manufacturing noise maps or predicting the noise of surrounding regions during a performance at an outdoor performance hall. By utilizing a commercially available program Cadna-A, values predicted using three equations, ISO-9613, VDI-2714, and CONCAWE, are compared with values measured at an actual outdoor performance hall located on a flat ground, wherein signal attenuation due to woodlands, buildings, and barriers is comparatively less. The compared positions are located at directivity angles of 0˚, 45˚, 90˚, 135˚, and 180˚, all at a distance of 15 m from the stage. As a result, the values predicted using the ISO-9613 and CONCAWE equations agree well with the actual values and are within a 5 % error rate; however, the values predicted using the VDI-2714 equation are not. The correction value of direction indexes and surrounding barriers of the hall using the VDI-2714 equation is estimated to be greater than those obtained using the other equations.

#Outdoor Theater(야외공연장) #Outdoor Transmission Noise(옥외전달소음) #Noise Map(소음지도)