抄録
Statistical analysis was made of the variability of the distribution of orchestral sounds and an experimental formula is given for the coefficient of variation of measured per-cent-of-time of the distribution against measurement duration and level. A pair of constants included in this formula gives a quantative measure of the slow level-variations of the pressure distribution for the individual orchestral music depending on conductors. A list of these constants obtained for 21 representative orchestral music is presented.
