Study on the Use of Micro-Perforated Panel to Improve Acoustic Performance in Mosque

Most activities in mosque such as Friday prayer and the sermon by an Imam require clarity of speech. Unfortunately, this ‘speech intelligibility’ performance is often poor due toinitial design of a mosque. This paper presents assessment of the indoor acoustics of a mosque. Acoustical properties such as reverberation time, clarity and early decay time are obtained from simulation data using CATT indoor acoustic software. The studystarted with anempty mosque with no acoustic treatment. Acoustic ‘green’ absorbers using micro-perforated panel (MPP) are then introduced to improve the acoustic performance. The application of MPP is still rare for mosque and is expected to replace the typical porous absorber. The effect of the panel size, location and frequency range of sound absorption are simulated and the results are discussed

ASSESSMENT OF THE ACOUSTICAL PERFORMANCE IN MALACCA MOSQUE,MALAYSIA: A CASE STUDY ON THE SAYYIDINA ABU BAKAR MOSQUE

As a building for worship and one of the important symbols in Islam, a mosque is usually designed with its architectural grandeur. Among of the characteristics is its spacious interior to create a perception so that people will feel ’small’ when entering the house of God. Most mosques therefore have high ceiling and are usually constructed with dome shape. In Malacca, Malaysia however, the architectural of the mosque resembles the traditional Malay house where the ceiling follows a pyramidal shape. This paper discusses the acoustical condition of the mosque in Malacca. The Sayyidina Abu Bakar Mosque is presented here for a case study. Measurement of its reverberation time was conducted and the results are validated with simulation data from CATT room acoustics software. Other important acoustical parameters are evaluated such as the early decay time, clarity, definition, lateral fraction and speech transmission index

Study on the Use of Micro-Perforated Panel to Improve Acoustic Performance in Mosque

Most activities in mosque such as Friday prayer and the sermon by an Imam require clarity of speech. Unfortunately, this ‘speech intelligibility’ performance is often poor due toinitial design of a mosque. This paper presents assessment of the indoor acoustics of a mosque. Acoustical properties such as reverberation time, clarity and early decay time are obtained from simulation data using CATT indoor acoustic software. The studystarted with anempty mosque with no acoustic treatment. Acoustic ‘green’ absorbers using micro-perforated panel (MPP) are then introduced to improve the acoustic performance. The application of MPP is still rare for mosque and is expected to replace the typical porous absorber. The effect of the panel size, location and frequency range of sound absorption are simulated and the results are discussed

Study on the Use of Micro-Perforated Panel to Improve Acoustic Performance in Mosque

Most activities in mosque such as Friday prayer and the sermon by an Imam require clarity of speech. Unfortunately, this ‘speech intelligibility’ performance is often poor due toinitial design of a mosque. This paper presents assessment of the indoor acoustics of a mosque. Acoustical properties such as reverberation time, clarity and early decay time are obtained from simulation data using CATT indoor acoustic software. The studystarted with anempty mosque with no acoustic treatment. Acoustic ‘green’ absorbers using micro-perforated panel (MPP) are then introduced to improve the acoustic performance. The application of MPP is still rare for mosque and is expected to replace the typical porous absorber. The effect of the panel size, location and frequency range of sound absorption are simulated and the results are discussed

Distributed optical fibre sensing technique in slope deformation monitoring

Over the past decades, slope deformation monitoring has applied the use of traditional monitoring instruments, which among them is the widely used inclinometer. Such instrument possesses many disadvantages where it is prone to electromagnetic interference, requires numerous cable installations and limited sensing range. With the advancement of optical fibre sensing technology, researchers have started to look into its capability in monitoring slope deformation.The fully distributed optical fibre sensing (BOTDA) was employed in monitoring the horizontal deformation of a smart pipe installed in the medium-scaled laboratory slope model. The smart pipe is made up of a PVC pipe integrated with optical fibre cable and buried into the soil. The result obtained showed that the performance of the smart pipe was able to record the deformation when the slope was subjected to incremental surcharge loading. This study concluded that the smart pipe is able to replace the existing traditional inclinometer in improving geotechnical monitoring efficiency