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The design of MPP and its application to enhance the acoustics of a real auditorium
Sarwono J.a, Prasetiyo I.a, Andreas S.a, William A.a
a Institut Teknologi Bandung, 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]Micro Perforated Panels (MPP) backed by air cavity is an acoustic absorber based on the Helmholtz resonance mechanism. MPP is potential to be an alternative acoustic absorber amid the carcinogenic issues of porous material. It is however, MPP has several limitations in its application. One of them is its narrow absorption bandwidth. One way to overcome this problem is by arranging some MPPs with particular parameters working on different absorption peaks to deal with wideband absorption as commonly required in room acoustic cases. In this paper the MPP were designed by simulation using Dah – You Maa model. There are four parameters that can be adjusted to get the right sound absorption coefficient from the MPP; those are panel thickness, pore diameter, cavity depth, and perforation area. Validations on the simulation results are carried out through Impedance Tube Measurements using transfer function method based on ISO 10534-2 standard. The paper also discusses the application of the MPP into a real auditorium by modeling and simulation. The aim is to overcome the acoustics problem for speech, classical music, and Indonesian traditional music performance in the auditorium. The influence of MPP’s configurations on the acoustics of the auditorium are presented and discussed.[/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 absorbers,Helmholtz resonance,Micro-perforated panels,Model and simulation,Music performance,Room acoustics,Sound absorption coefficients,Transfer function method[/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]Micro perforated panels (MPP),Room acoustic[/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]