TY - GEN
T1 - Reverberation time in outdoor spaces of apartment complexes
T2 - 41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
AU - Yang, Hong Seok
AU - Kim, Myung Jun
AU - Kang, Jian
AU - Jung, Sun Eung
PY - 2012
Y1 - 2012
N2 - Comfortable sound environment of outdoor spaces in apartment complexes contributes to the improvement of the overall environmental quality. It is expected that RT (reverberation time) of outdoor spaces surrounded by multi-storey buildings depends on many designable factors such as the openness, volume and building layouts, etc. This study therefore aims to clarify the influential factors for RT in outdoor spaces surrounded by buildings with complicated topographical conditions. A series of measurements were carried out for 15 outdoor spaces in 6 apartment complexes with different building layouts. In particular, the effect of source-receiver distance on RT was also investigated for each site. The 15 outdoor spaces were categorised into 5 types as linear, parallel, L, U and courtyard building layouts. The result showed that RT at 500 Hz and 1000 Hz is relatively long compared to that at low and high frequencies. With increasing source-receiver distance, RT increases logarithmically. For the studied cases, the maximum RT at 500 Hz was about 4 sec. Empirical method considering the openness, averaged ray length and building high is also suggested, to predict RT approximately in the outdoor spaces. The overall results suggest that RT in outdoor spaces of apartment complexes is significantly influenced by source-receiver distance and building layouts.
AB - Comfortable sound environment of outdoor spaces in apartment complexes contributes to the improvement of the overall environmental quality. It is expected that RT (reverberation time) of outdoor spaces surrounded by multi-storey buildings depends on many designable factors such as the openness, volume and building layouts, etc. This study therefore aims to clarify the influential factors for RT in outdoor spaces surrounded by buildings with complicated topographical conditions. A series of measurements were carried out for 15 outdoor spaces in 6 apartment complexes with different building layouts. In particular, the effect of source-receiver distance on RT was also investigated for each site. The 15 outdoor spaces were categorised into 5 types as linear, parallel, L, U and courtyard building layouts. The result showed that RT at 500 Hz and 1000 Hz is relatively long compared to that at low and high frequencies. With increasing source-receiver distance, RT increases logarithmically. For the studied cases, the maximum RT at 500 Hz was about 4 sec. Empirical method considering the openness, averaged ray length and building high is also suggested, to predict RT approximately in the outdoor spaces. The overall results suggest that RT in outdoor spaces of apartment complexes is significantly influenced by source-receiver distance and building layouts.
UR - http://www.scopus.com/inward/record.url?scp=84883592701&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84883592701
SN - 9781627485609
T3 - 41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
SP - 7577
EP - 7593
BT - 41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Y2 - 19 August 2012 through 22 August 2012
ER -