The amount of sound transmitted outside a room depends on the surface while the amount of sound reflected or absorbed de…

The value of __________ depends on type of activity, geographical conditions, age of occupants, etc.

It is quite evident that the incoming air for ventilation should be ____ in summer and ____ in winter before it enters t…

Hard materials used for sound insulation are good absorbers.

The defect of _______ results in confusion with the sound created next.

Which law states that the magnitude of a sensation is directly proportional to the logarithm of the physical stimulus pr…

The speed at which the sound wave travels or passed through any medium is termed as the __________

Felt and mineral wool are examples of _______