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Objective and subjective acoustics measurement of audience seating areas in a medium size auditorium
Sari L.F.a, Utami S.S.a, Sarwono J.b
a Department of Nuclear Engineering and Engineering Physics, Universitas Gadjah Mada, Yogyakarta, Yogyakarta, Indonesia
b Department of Engineering Physics, 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]© Published under licence by IOP Publishing Ltd.Several consideration of the acoustical quality of a multi-purpose hall should be taken into account and therefore, the audiences must be fully aware of the acoustical consequences in deciding their seating positions. In this paper, objective measurement and subjective assessment in the medium capacity, Driyarkara multi-purpose hall, has been investigated. Room impulse responses (RIR) were taken for several monaural parameter distribution including G, EDT, and C80 at 16 positions referring to ISO 3382-1:2009. The signals were convolved with anechoic sound of musical instruments to reproduce acoustic stimuli for subjects to listen. Stimuli data is reduced to 8 measurement’ positions, which indicated the noticeable difference. These were generated to reproduce binaural sounds for further subjective assessment. The distribution of binaural parameters were observed in 250 Hz, 1 kHz, and 4 kHz to obtain JND (Just Noticeable Difference). The result reveal that this hall contains 3 different acoustic zones with the range of acoustics parameters of G: -8.91 dB – 1.07 dB, EDT: 1.12 s – 1.52 s, C50: -0.11 dB – 5.05 dB, C80: -3.70 dB – 2.03 dB, D50: 31.00 – 60.71, Ts: 62.75 ms – 106.50 ms, IACC: 0.43 s – 0.82 s, Treble Ratio: 0.67 – 0.96 and Bass Ratio: 0.81 – 2.80. Furthermore, this result correlates with the JND value for G: 2.26 dB, Ts: 17.5 ms, Treble ratio: 0.2, Bass Ratio: 0.03 and D50: 16.67.[/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 zones,Just-noticeable difference,Multi-purpose,Objective measurement,Parameter distributions,Room impulse response (RIR),Seating position,Subjective assessments[/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]https://doi.org/10.1088/1742-6596/1075/1/012015[/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]