THE ESTIMATION OF SPEECH INTELLIGIBILITY QUALITY IN ORTHODOX CHURCHES

Abstract

This paper presents the estimation of speech intelligibility in unoccupied and occupied Orthodox churches "Saint George" in Žitnipotok and "Holy Great Martyr Prokopija" in Katun, Serbia, based on a comparative analysis of objective acoustic parameters: reverberation time, RT30, and speech transmission index STI,and subjective acoustic parameters: subjective intelligibility of sentences, SIsent, PB words, SIPB, and CVC logotoms, SICVC. Correlation and regression analysis confirmed a strong relationship between the analyzed acoustic parameters of speech intelligibility and reverberation time. The estimation of the quality of speech intelligibility in churches was carried out using Standard IEC 60268 - 16.