At the November 1965 meeting of the Society [J. Acoust. Soc. Am.38, 928(A) (1965)], we presented the results of a series of unsuccessful attempts to replicate the findings of Green, Birdsall, and Tanner [J. Acoust. Soc. Am.29, 523–531 (1957)] on detection versus duration. Since then, still using a fixed‐bandwidth filter, but by changing the time constants of the detector, we have come much closer. Like them, we have employed a continuous masker and a constant value ofE/Noand our new data yield a close fit to theirs. The filter is followed by a linear (half‐wave) detector and by an integrator with a decay time of 100 msec. A replication of the experiment, this time employing a square‐law rectifier (energy detector), but using the same integration time constants, yielded reasonably similar results. [Work supported through a contract with the U. S. Bureau of Ships and a grant from the National Aeronautics and Space Administration.]