Acoustics of King Abdullah Mosque

Abdelazeez, Mohamed K.; Hammad, R.N.S.; Mustafa, Ahmed A.

doi:10.1121/1.401936

Cited by 23 publications

(11 citation statements)

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“…The literature on the acoustics of sacred spaces is extensive. Within this framework the acoustics of mosques [1][2][3][4][5][6], churches [7,8], basilicas [9] and cathedrals [10][11][12][13] have always been an attractive research topic for acousticians. In relation to this research there are mainly two groups of studies.…”

Section: Acoustics Of Sacred Spacesmentioning

confidence: 99%

“…In relation to this research there are mainly two groups of studies. The first group includes virtual re-construction of historical structures [2,3,11], renovation of pre-designed and built structures [1] for enhancing their indoor acoustical qualities, and acoustical design of new generation mosques [6]. The prominent methods in sound field analysis are field tests, scale modelling, and acoustical simulations [14].…”

Section: Acoustics Of Sacred Spacesmentioning

confidence: 99%

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Acoustical Impact of Architectonics and Material Features in the Lifespan of Two Monumental Sacred Structures

Gül

2019

Acoustics

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Hagia Sophia and Süleymaniye Mosque, built in the 6th and 16th centuries, respectively, are the two major monuments of theİstanbul World Heritage Site. Within the context of this study, sound fields of these two sacred multi-domed monumental structures are analyzed with a focus on their architectonic and material attributes and applied alterations in basic restoration works. A comprehensive study is undertaken by a comparative analysis over acoustical field tests held in different years and over an extensive literature review on their material and architectural characteristics. Initially, the major features of Hagia Sophia and Süleymaniye Mosque are presented, and later, basic alterations in regard to function and materials are provided. The methodology includes the field tests carried both within the scope of this research as well as the published test results by other researchers. Acoustical simulations are utilized for comparison of unoccupied versus occupied conditions and also for discussion on original materials. The impact of historical plasters on the acoustics of domed spaces is highlighted. Common room acoustics parameters as of reverberation time and clarity are utilized in comparisons. The formation of multi-slope sound energy decay is discussed in light of different spiritual and acoustical needs expected from such monumental sacred spaces. 494Acoustics 2019, 1 495 field tests carried both within the scope of this research as well as the published field test results by other researchers. Acoustical simulations are applied for comparison of unoccupied versus occupied conditions, reflecting major activity patterns. The simulations also provide basis for a discussion on the acoustical outcomes of original or historical plasters versus the current condition after restorations. Finally, the formation of multi-slope sound energy decay in case structures is discussed briefly in light of different spiritual and acoustical needs expected from such monumental sacred spaces. Hagia SophiaHagia Sophia, the Holy Wisdom of Christ, was constructed as a church between 532 and 537 in Constantinople (Istanbul) during the reign of the Byzantine Emperor Justinian. Hagia Sophia was both the center of religious life and had been a legend for the new wave of church buildings in the West in the 12th and 13th centuries. After the Ottoman conquest of 1453, during the rule of Mehmet II, it was converted from a church to a mosque. In 1932 upon order from Atatürk, Hagia Sophia (Figure 1) started to function as a museum. Hagia Sophia is a masterpiece of not only Byzantine art but also of the world's historical heritage. Its architectural success and carried messages affected both the Ottoman Empire and architects such as Sinan the Architect [18][19][20][21].Acoustics 2018, 1, x FOR PEER REVIEW 3 of 24 field tests carried both within the scope of this research as well as the published field test results by other researchers. Acoustical simulations are applied for comparison of unoccupied versus occupied conditions, reflecting major...

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Section: Acoustics Of Sacred Spacesmentioning

confidence: 99%

Section: Acoustics Of Sacred Spacesmentioning

confidence: 99%

Acoustical Impact of Architectonics and Material Features in the Lifespan of Two Monumental Sacred Structures

Gül

2019

Acoustics

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“…The latter activities require speech intelligibility and therefore good acoustic quality is important. Interest has been shown in the acoustic performance in mosques in the past 15 years, but has been mostly related to real-time acoustic measurement [1][2][3]. The studies then continue with computer simulation, which is a more attractive approach and is used for designing improvements to the acoustic quality [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pyramidal Dome Geometry on the Acoustical Characteristics in A Mosque

Kassim

Putra

Nor³

et al. 2014

J MECH ENG SCI

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As an important symbol in Islam, a mosque is built with architectural grandeur. Among the characteristics is its high ceiling and it is usually constructed with a typical spherical dome shape. Some mosques, however, are influenced by the local culture and the dome can be of a different shape, such as pyramidal, as found in mosques in Malacca, Malaysia. This paper presents an assessment of the internal acoustical characteristics of a mosque having a pyramidal dome. The study is conducted by means of computer simulation using CATT indoor acoustic software. Reverberation time and clarity are taken to evaluate the intelligibility of speech. The effect of the angle and height of the dome on the acoustical parameters is discussed. It is found that a pyramidal dome with a steeper angle contributes to poor acoustic clarity.

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“…The first category comprises assessments of single mosques, 1,2 comparisons between different mosques, 3 and comparisons of mosques to churches. 4,5 The second category concerns the renovation of existing mosques [6][7][8] and the acoustic design of the new generation of mosques. 9 These studies discuss the acoustic design process and solutions to overcome acoustic defects.…”

Section: Introductionmentioning

confidence: 99%

Investigations on sound energy decays and flows in a monumental mosque

Gül

Xiang

Çalışkan

2016

The Journal of the Acoustical Society of America

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This work investigates the sound energy decays and flows in the Süleymaniye Mosque in İstanbul. This is a single-space superstructure having multiple domes. The study searches for the non-exponential sound energy decay characteristics. The effect of different material surfaces and volumetric contributions are investigated using acoustic simulations and in situ acoustical measurements. Sound energy decay rates are estimated by Bayesian decay analysis. The measured data reveal double- or triple-slope energy decay profiles within the superstructure. To shed light on the mechanism of energy exchanges resulting in multi-slope decay, spatial sound energy distributions and energy flow vectors are studied by diffusion equation model (DEM) simulations. The resulting sound energy flow vector maps highlight the contribution of a sound-reflective central dome contrasted with an absorptive carpeted floor in providing delayed energy feedback. In contrast, no multi-slope energy decay pattern is observed in DEM simulations with a bare marble floor, which generates a much more diffuse sound field than in the real situation with a carpeted floor. The results demonstrate that energy fragmentation, in support of the non-exponential energy decay profile, is due to both the sound absorption characteristics of materials and to their distributions, as well as to relations between the subvolumes of the mosque's interior.

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Acoustics of King Abdullah Mosque

Cited by 23 publications

References 0 publications

Acoustical Impact of Architectonics and Material Features in the Lifespan of Two Monumental Sacred Structures

Acoustical Impact of Architectonics and Material Features in the Lifespan of Two Monumental Sacred Structures

Effect of Pyramidal Dome Geometry on the Acoustical Characteristics in A Mosque

Investigations on sound energy decays and flows in a monumental mosque

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