An Acoustical Analysis of Domes Coupled to Rooms: With Special Application to The Darussholah Mosque, In East Java, Indonesia
Date Added
01/07/2022
Content Type
Dissertation
Category
Masters
Link to Content
Subject Area
Mosques
Author
Sentagi Sesotya Utami
Publisher Name
Sentagi Sesotya Utami
Year of Publication
2009
Description
Concave surfaces are often considered to be detrimental or precarious in room
acoustics, especially because of the impact they have on the distribution of sound energy.
However, it is often difficult to avoid such surfaces in buildings with specific
architectural functions. A primary example of this involves mosques, which are sacred
places of worship for Muslims. In keeping with the Islamic architectural style, most
mosques incorporate a symbolic centralized domed ceiling as part of their roof structures.
These domes are open on the bottom and coupled to the acoustic spaces below. In many
cases, the lower spaces may be idealized as rectangular enclosures. Owing to the distinctness and ubiquity of this basic architectural form, a thorough, fundamental
analysis of such environments would be useful to the architectural acoustics community.
In this study, predictions from EASETM computer models were compared to the results
derived from physical scale model measurements. The scale model measurement
techniques involved evaluation of impulse responses in a 1:12 scale model of
Darussholah mosque, in East Java, Indonesia. A miniature human voice source was
created to carry out the impulse response measurements. It was carefully evaluated to
ensure that it produced adequate frequency response and directivity comparable to an
actual human voice. Acoustical parameters were derived from the impulse responses.
Statistical analysis using ANOVA and t-tests were used to compare results from the
measurements with variations of domed ceiling configurations and other aspects of the
measurement setting. Conclusions were based on these comparisons and on auralization
listening tests in order to ascertain the elements that produced the most significant impact
on the mosque acoustics. The analysis helps establish criteria for good acoustics in
mosques and other buildings with domed ceilings.
Files
English
Sentagi Sesotya Utami
Brigham Young University - Provo
2005