Abstract
A previous pair of experiments produced a complex set of results which showed (a) that Leq, the energy‐equivalent sound level, predicts choices among traffic sounds better than do other traffic noise descriptors, and (b) time‐dependent sound‐level variability and average frequency spectrum shape are minor predictors of choice [G. W. Cermak and P. C. Cornilion, J. Acoust. Soc. Am. 59, 1412–1420 (1976); G. W. Cermak, J. Acoust. Soc. Am. 61, S56 (1977)]. The present experiments replicate both of the previous experiments using a new set of traffic sounds. In experiment I, people judged pairs of unconstrained traffic sounds; in experiment II, other subjects judged the same sounds which had been made equal in Leq level. Results supported the use of Leq as a traffic noise descriptor, but did not support the use of sound‐level variability or spectrum measures. Complex perceptual attributes of traffic sound with no simple acoustic description were the best predictors of choice when sounds were equal in Leq.
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