SH 402 · Chapter 3
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A room has dimensions of $6\times 4\times 5\,\mathrm{m}$. Find (i) the mean free path of the sound wave in the room (ii) no. of reflections made per second by sound waves with the walls of the room. Given velocity of sound in air is $350\,\mathrm{ms^{-1}}$.
Give an account of bad acoustic properties of a hall and discuss the method to improve these defects.
The reverberation time for empty hall is $1.5\,\mathrm{sec}$ with 500 audiences in the hall, the reverberation time falls $1.4\,\mathrm{sec}$. Find the number of persons present in the hall if the reverberation time falls down to $1.312\,\mathrm{sec}$.