Table 1.
Experimental conditions.
| Experiment | Precursor 0.3–8 kHz BB-noise | Masker | Probe 4 kHz tone |
|---|---|---|---|
| SM1n | 50 dB SPL | SM; Quiet, 20, 30, …, 60 dB SPL; 2-6 kHz noise | 70 dB SPL |
| FM1off | 50 dB SPL | FM; Quiet, 50, 60, …, 90 dB SPL; 2.4 kHz tone | 50 dB SPL |
| FM1on | 50 dB SPL | FM; Quiet, 20, 30, …, 60 dB SPL; 4.0 kHz tone | 50 dB SPL |
| SM2off | 50 dB SPL | SM; Quiet, 40, …, 80 dB SPL; 2.4 kHz tone | 60 dB SPL |
| FM2off | 50 dB SPL | FM; Quiet, 50, …, 95 dB SPL; 2.4 kHz tone | 60 dB SPL |
The names in the first column identify the experiments: the first two characters indicate whether simultaneous masking (SM) or forward masking (FM) was used; the subsequent number indicates the subject; the last characters indicate the stimulus type of the masker (noise or ON- or OFF-frequency masker).