抄録
The effects of the external noise and reverberation time of the acoustical propagation space on two psychological impressions for the noise/audio signal and the listening score, in the case of listening to monosyllable/word audio signal, is discussed. Cncretely, the two psychological impressions and the listening score are considered in condition with the speech interference level and the revervation time. Next, the prediction problems of the psychological impressions and the listening score are considered.