A BASIC STUDY ONT HE SOUND ABSORBING PROPERTIES OF SQUARE PANELS WITH HOMOGENOUS SIZE AND VARIOUS ARRANGEMENTS

Abstract

Noise disturbance at airports negatively affects people's health. This paper focuses on the study of the public spaces with a large capacity in the Ahvaz International Airport, which are perceived as acoustically uncomfortable. The main reason for poor acoustic conditions is an excessive Hall reverberation, as the measured reverberation time reached 4–5 s at middle frequencies. To overcome this acoustics problem, five square sound absorbing panels were installed on the wall surfaces of the airport lounge and the models were simulated by using EASE 4.4 software. In our research Revebration Time (RT, or main index), three other sound indices including, auditory error coefficient (ALconse) speech transmission index (STI) and total sound pressure level (SPL) were evaluated according to the international standards of ISO3382 and ISO 3382-1. The aim of this research was to introduce an acousticc treatment on the airport lounge walls to enable better absorption of sound to improve the acoustic quality of Ahvaz International Airport. After the simulation, it was concluded that of the five different square panels deployed, Model SA-1 was associated with the lowest sound pressure across different frequencies and hence this panel was considered as the ideal for improved acoustics for the space.