繰り返し衝撃音のノイジネス評価に関する実験

概要

論文の詳細を見る
Five series of psycho-acoustical experiments are performed in a semi-anechoic chamber. Five to eleven subjects judge the perceived noisiness and the loudness of repetitive impulses by means of the comparison with those of continuous sounds by the constant method or the adjustment method. The principal findings are as follows:1)The judged noisiness of repetitive impulses are prominent than the judged loundness. This trend is clear at lower sound pressure levels and with respect to "real life" sounds. 2)To the noisiness ratings of repetitive impulses, L_<eq> is not quite satisfactory. Some corrections on the spectral characteristics such as PNL and on the temporal characteristics are required. 3)The perceived noisiness of repetitive impulses consists of the energy effect and the impulsive effect. For the abatement of the impulsive effect, the repetition rate, the decay time and the background-to-burst level are important factors, while the rise time is of little importance.
社団法人日本音響学会の論文
1982-10-01