Correlation of objectionability ratings of noise with proposed noise-annoyance measures.
Cincinnati, OH: U.S. Department of Health, Education, and Welfare, Public Health Service, Division of Occupational Health, Occupational Health Research and Training Facility, RR-3, 1964 May; :1-9
The ability of various physical measurement weighting procedures to predict noise annoyance reactions of listeners exposed to widely different community noises was examined. Study subjects were exposed in a laboratory setting to recordings of roadway noise, aircraft flyover noise, and train noise. The 100 participants were to judge which of the two noises in each pair presented was more objectionable. The reports from the subjects were used to build scaled objectionability ratings for the noise samples. A correlation was then made between the ratings and the A-scale sound level readings of the noises in decibels. The physical measurements were then converted into subjective magnitudes of loudness and also correlated with perceived noisiness. Of the noise annoyance indices evaluated, Zwicker's loudness measures most closely corresponded with subjective judgments of annoyance. Values relating C-scale overall energy measurements to the scales values of objectionability judgments showed the greatest deviations from the least squares fitted regression line, indicating the poorest degree of correspondence of all the relationships noted.
Noise-exposure; Mental-stress; Aircraft; Humans; Environmental-stress; Noise-levels; Community-noise; Motor-noise
Correlation of objectionability ratings of noise with proposed noise-annoyance measures