Measurements and verification of two mosques in Saudi Arabia

Two prestigious mosques, Holy Haram in Makkah and Prophets Mosque in Medinah, have been selected to investigate their acoustical properties. With portable measurement setup basic parameters like reverberation time, intelligibility numbers, sound level distribution, and others have been measured. This was done with and without a sound system installed at the site. In postprocessing the results have been compared with recommendations developed by us for different mosque sizes. Also, proposals are given for further improvements in the existing sound quality. Finally, suggestions for future newly constructed mosques are derived.