SOUND PROPAGATION IN SOUNDPROOFING EXTERIOR OPEN CASEMENT DOORS

摘要

Wooden exterior open casement doors consisted of two wooden frames that can be opened and closed at various angles are widely used in countries with tropical climates. However, the annual increase in traffic noise level and number of motorcycles and automobiles in developing tropical countries have rendered these doors to be useless. In this paper, we present a model for manufacturing doors suitable for developing tropical countries. These windows are capable of ventilating, regulating sunlight, protecting against coldness, and reducing traffic noise and fumes from motor vehicles. The ventilation and soundproofing unit hold an importance place in the design of the doors and are calculated using the wave equation and observations of higher-order mode waves.