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Study on acoustic performance of football stadium
Prasetiyo I.a, Sarwono J.a, Natanael H.a, Tanjung I.a
a Institut Teknologi Bandung, Faculty of Industrial Technology, Engineering Physics, West-Java, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]An acoustic measurement has been conducted to assess acoustic performance of the Main Stadium of Gelora Bung Karno (GBK), Jakarta, as the largest football stadium in Indonesia. From measurement results, it was found that some acoustical defects are noticeable particularly related with echo or flutter echo and sound clarity. Considering the results, it is instructive to investigate further and found physical explanation to the acoustical defects from the elliptical shape and open space of football stadium. For this, the ray tracing simulation based is employed that is implemented using software CATT. The simulation results indicate that the ceiling area have contributed to the presence of specular reflected sound with delays in excess of 50 ms. This has caused the presence of a multiflutter echo (or discrete echo). Meanwhile, poor clarity (D50<50%) is mostly related with higher energy of late response although it is naturally beneficial to hide the perceptibility of echo by listeners. Hence, an area of GBK with poor clarity is not necessarily having echo disturbances and vice versa. Considering the results, a necessary acoustic treatment can be focused to control those reflected sound energy by refining the acoustic properties of ceiling area. However, a great care is required to control early and late response in order to have a good clarity as well as suppress the echoes for the case of a large space.[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Author keywords" size="size-sm" text_align="text-left"][vc_column_text]Acoustic measurements,Acoustic performance,Acoustic treatment,Elliptical shapes,Football stadiums,Large spaces,Ray tracing simulation,Reflected sounds[/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Indexed keywords" size="size-sm" text_align="text-left"][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="Funding details" size="size-sm" text_align="text-left"][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=".vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}"][vc_empty_space][megatron_heading title="DOI" size="size-sm" text_align="text-left"][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width="1/4"][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]