Abstract
This report is divided into three parts. The method of articulation test is described in chapter 1. The word lists compiled by a random enumeration from the " Table of One Hnndred Japanese Syllables " were tape-recorded by a standard speaker, and the conditions of the sound source were then maintained constant throughout the tests. Chapter 2 gives an explanation of the analysing method for the test results. The articulation νs. speech level characteristics in a given rooom is analysed by using the articulation νs. speech characteristics in a dead room, the characteristic relation between articulation and the noise and speech levels, and the articulation νs. reverberation time characteristics. Using the method described in chapters 1 and 2, practical studies on the test results of each Hall are presented in chapters 3 to 5. In these chapters, average percentage-articulation and distribution of articulation in the Hall were compared with the standard criteria, and effective reverberation time and noise level of each Hall then estimated by reference to the articulation νs. speech level characteristics of the Hall.
