Relative weights for two profile analysis and one detection task were estimated. For the profile analysis ‘‘bump’’ task the standard was the sum of N equal-amplitude sinusoidal components ranging in frequency from 200 to 5000 Hz. The signal for this task was an increment in level to the 1000-Hz component of the standard. The number of components N ranged from 4 to 50. For the profile analysis ‘‘down–up’’ task the standard was composed of N equal amplitude tones ranging in frequency from 200 to 5000 Hz. The signal to be detected led to a spectrum that varied down–up...down–up. The detection task used the same standard as the profile analysis down–up task, but the signal to be detected was an added 1000-Hz tone. Comparisons of the relative weights revealed that profile analysis bump and the detection of a tone added to a notched masker rely on similar processing strategies. By contrast it was apparent that auditory processing in the profile analysis down–up task depended on a different strategy than the other two tasks. Finally, rough estimates of the auditory filter bandwidths suggest invariance with regard to task. [Work supported by NIH.]