Post-masking depends on masker bandwidth as well as duration

Evidence

When using narrow-band maskers, post-masking also depends on bandwidth. Therefore, many variables besides the levels of the two maskers influence the addition of the effects produced by masker “I” and masker “2”. One example that produces relatively large effects will be discussed. Both the maskers are relatively long (about 500 ms); the test-tone duration is 20 ms and Gaussianshaped, with a 2-ms rise time. The delay time between the end of the masker and the end of the test tone is kept constant at 46 ms. A narrow-band noise centred at 2.8 kHz is llsed as masker Ml. The frequency of the testtone burst is the same as the centre frequency of masker Ml. Masker M2 is a sinusoidal tone at 3.22 kHz (Fig. 4.40a) or a broad-band noise (Fig. 4.40b). — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 626

Categorization

• XREF: Extends earlier post-masking duration findings into the bandwidth dimension, connecting to the excitation-pattern framework.