Short test tones are masked up to 10 dB more right after masker onset

Evidence

This effect (sometimes called the overshoot effect) also depends on the spectral content of masker and test sound. The effect disappears if the two sounds have similar spectra. Figure 4.21 gives examples for two different bandwidths of the masker. First, the masker is white noise (as used in Fig. 4.20), and the results are indicated by the dotted line. Second, the solid curve shows the results for a masker centred at 5 kHz and having the width of the critical band. The delay time, Llt, between the onset of the masker and the onset of the 2-ms test-tone burst, is the abscissa. The overshoot effect for broad-band maskers is largest at very small Llt. It diminishes for larger values of Llt and disappears completely after about 200 ms. The overshoot effect does not appear for narrow-band maskers. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 512 (#expands, via linked claim)

Categorization

  • XREF: connects to: A masker raises the audibility threshold of a test sound.; Broadband maskers overshoot-effect short tones but narrowband maskers do not — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 512; Forward masking persists up to 200 ms after the masker ends

Broader Connections