室内音響に関する物理量と心理量との対応に関する実験結果について(II) : 立体録音再生法による二音節信号の実験結果について

抄録

In room acoustics, it is necessary for establishing a method of measuring the acoustical effect of halls and a reasonable method of designing room acoustics to find correspondences between physical and psychological quantifies. This paper deals with the correspondence of the physical quantity of a sound field which we measured in a reverberant room in which reverberation time was varied in four steps from about O. 3sec to 2. Osec to the psychological quantity of two syllable signals which we recorded stereophonically in the same sound field and then reproduced in an anechoic room. It has been found from the result of our experiment that physical and psychological quantities are in linear oorrelation with each other. Among the measured physical quantities, reverberation time and integrated sound pressure value are in good correspondence to psychological scale. The ratio of time-sound pressure and the ratio of space-sound pressure which represent the time and space construction of decaying sound are in correspondence to psychological scale.