The rate of ventilation depends on both the wind effect and the stack effect.

The word Acoustic is originally derived from a Greek word meaning _____

_________ is the number of cycles made by a sounding body per unit time.

The term ______ is used to indicate a big room or a hall where sound is picked up by a microphone and it includes the ra…

Ventilation arising from the temperature difference between outside and inside takes place due to ________ effect.

Sound foci is a defect caused by _________ interior surfaces.

The ____________ is defined as the number of pressure variation which a sounding body makes in each unit of time.

Which of the following types of absorbents can absorb the sound of any frequency?