Computer applications in building and environmental acoustics

Model simplification is an important step in room modelling for acoustics simulation. Various simplification algorithms were previously suggested. However, they are highly demanding methods, which are more suitable for large complicated spaces. As this paper focused on small size open-plan office (OPO) spaces, basic modelling and manual simplification processes were used. The aim is to find the optimum level of model simplification through a manual reduction in number of surfaces. Parallel to this aim, the objective is to examine the effects of the change in model detail level on selected acoustical parameters in six OPOs. Construction of models started with the most detailed model. Simplified models were developed by gradually reducing the number of surfaces. Simulation on RT, STI and decay in SPL were done and compared to the measured data. The study found that models with up to 80% reduction in number of surfaces can still produce plausible simulation results.

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“…As a result, establishing assessments toward these processes took a lot of time and effort (D. J. Oldham et. al, 1987).…”

Section: Introductionmentioning

confidence: 99%

Effect of model simplification through manual reduction in number of surfaces on room acoustics simulation

Jalil

Din

Keumala

et al. 2019

JDBE

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“…In these enclosures, acoustic experiments with scale models (Xiang, Blauert, 1993;Polack et al, 1993;Kim et al, 2011) still remain a powerful tool when a rough design of the room is already available (Hidaka et al, 2000). However, as a further aspect of the widespread use of computers in architecture (Oldham, Rowell, 1987), computer simulations are replacing these physical models since their algorithms are becoming not only easier to use but also cheaper and more accurate. Nowadays, the wide range of existing commercial computer programmes, whose validity can be directed towards a variety of scientific aspects (Ermann, 2005;Rychtáriková et al, 2011), incorporate highquality auralizations.…”

Section: Introductionmentioning

confidence: 99%

Simulated Sound-Fields in a Multi-Configurable Auditorium

Bustamante¹,

Girón²,

Zamarreño³

2015

Archives of Acoustics

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In this work, simulation techniques have been implemented to study the sound fields of a multiconfigurable performance enclosure by creating computer acoustic 3D-models for each room configuration. The digital models have been tuned by means of an iterative fitting procedure that uses the reverberation times measured on site for unoccupied conditions with the orchestra shell on the stage. The initial virtual acoustic model is validated by comparing the other monaural and binaural acoustic parameters measured in the room in terms of their perception differential threshold. The procedure is applied to the Maestranza Theatre of Seville, built for the Universal Exhibition in 1992. The spatial distribution of the acoustic parameters in the audience area of the venue by measured parameters and simulation mappings enables the establishment of three zones of acoustic comfort, and are corroborated by the values of the AndoBeranek function which provide a global quality coefficient of each zone.

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Sound intensity measurements for building and environmental acoustics

Hunt¹

1988

Building and Environment

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Computer applications in building and environmental acoustics

Cited by 8 publications

References 31 publications

Effect of model simplification through manual reduction in number of surfaces on room acoustics simulation

Effect of model simplification through manual reduction in number of surfaces on room acoustics simulation

Simulated Sound-Fields in a Multi-Configurable Auditorium

Sound intensity measurements for building and environmental acoustics

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