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Illustration of the effect of alignment delay on the overshoot effect. The input signal was a 2000-Hz tone with an abrupt 25-dB 0.03-s increase in sound level. The output of the simulated compression hearing aid is shown for the fast compression system (left: alignment delays of 0, 2.5, 5, and 7.5 ms) and the slow compression system (right: alignment delays of 0, 5, 10, and 15 ms).
