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प्रश्न
What is reverberation time? How it is important ? write the factors affecting reverberation time.
उत्तर
In reverberation sound produced in an enclosure continues to be heard for some time. A sound produced in a room undergoes multiple reflections from the walls, the floor and the ceiling before becoming inaudible. The prolongation of sound in an enclosed place even when the sound source has stopped is called reverberation.
The time taken by the sound to fall from its average intensity to inaudibility is called the reverberation time. It is also defined as time during which the sound intensity falls from its steady state value to its one-millionth value after the source is shut off
`therefore I/I_o = 10^-6`
And from equation it, is found as ,
L = -60 dB
Thus during reverberation time the intensity level drops by 60 dB.
संबंधित प्रश्न
What is reverberation time? Discuss sabine formula.
State any five factors affecting the acoustics of the building and give the remedies for each.
Explain the factors on which reverberation time depends .
A classroom has dimension 10×8×6m3. the reverberation time is 3 sec. calculate the total absorption of surface and average absorption.
A hall of dimension 25×18×12m3 has an average absorption coefficient 0.2. find the reverberation time. If a curtain cloth of area 150m2 is suspended at the centre of Hall with coefficient of absorption 0.75, What will be the reverberation
time?
A conference room has a total volume of 2000 m3.The magnitude of total
absorption with in the conference room is100 Sabin.Calculate thereverberation time.
