Two‐sound sequences with interpulse intervals of312 secwere presented to subjects in order to evaluate the character of judgments involved in temporal comparisons of the successive sounds. A 1000‐Hz tone and wide‐band noise were presented in all possible two‐sound combinations. The duration of the first (referent) sound was 500 msec, and the duration of the second (comparison) sound ranged from 300 to 700 msec. The subjects' task was to state whether the second sound was shorter, of the same duration, or longer than the first sound. As the difference in the durations of the two sounds increased, accuracy of judgments improved. The effect was asymmetrical; judgments were more accurate when the second sound was shorter than the first sound and less accurate when the second sound was longer, given equivalent differences in duration. Subjective impressions were that noise bursts were longer than tone presentations of the same duration, which accords with the finding that the asymmetry in accuracy of judgments was diminished by tone‐noise combinations and enhanced by noise‐tone combinations.