This study presents a psychoacoustic analysis of the integration of spectral and temporal cues in the discrimination of simple nonspeech sounds. The experimental task was a same–different discrimination between a standard and a comparison pair of tones. Each pair consists of two 80‐ms, 1500‐Hz tone bursts separated by a 60‐ms interval. The just‐discriminable (d′=2.0) increment in duration Δt, of one of the bursts was measured as a function of increments in the frequency Δf, of the other burst. A trade off between the values of Δtand Δfrequired to perform atd′=2.0 was observed, which suggests that listeners integrate the evidence from the two dimensions. Integration occurred with both sub‐ and supra‐threshold values of Δtor Δf, regardless of the order in which the cues were presented. The performance associated to the integration of cues was found to be determined by the discriminability of Δtplus that of Δf, and thus, it is within the psychophysical limits of auditory processing. To a first approximation the results agreed with the prediction of orthogonal vector summation of evidence stemming from signal detection theory. It is proposed that the ability to integrate spectral and temporal cues is in the repertoire of auditory processing capabilities. This integration does not appear to depend on perceiving sounds as members of phonetic classes.