For atmospheric air medium, the sound velocity at 20°C is about ____

If the direction of the wind is at 90° to one of the faces, positive pressure will be produced on ______

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

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

The rate of flow through an opening due to the wind blowing on the wall containing it is given by the expression _______

Proper shape of the hall can help in preventing the formation of echoes.

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…

The branch of science which deals with origin and propagation of sound is called as _______