Question 4 A town hall has an internal volume of 3000 m3 and has a seating capacity of 200 people. For sound at 500 Hz,

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Question 4 A Town Hall Has An Internal Volume Of 3000 M3 And Has A Seating Capacity Of 200 People For Sound At 500 Hz 1 (211.82 KiB) Viewed 29 times

Question 4 A town hall has an internal volume of 3000 m3 and has a seating capacity of 200 people. For sound at 500 Hz, each occupied seat has a total absorption of 0.65 m2 and all other interior surfaces have a combined total absorption of 210 m2. (a) Calculate the reverberation time at 500 Hz for the town hall when it is fully occupied and discuss its suitability as both a music venue AND a lecture theatre by referring to Figure 1 below. (14 marks) 2.6 2.4 2.2 2.0 Reverberation time at 500Hz in sec. 1.8 Organ music 1.6 1.4 Churches (Average) 1.2 Music (Average) 1.0 0.8 Speech 0-6 0-4 02 0 1 100 2. 3 10 20 30 200 300 Volume in 100m Figure 1: Optimum reverberation time for auditoria of different function and size (b) Discuss the range of design solutions that could be implemented in the town hall to make it acoustically suitable for use as a conference centre. (6 marks)