Masking of filtered noise bursts by synthetic vowels

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Abstract
The simultaneous and temporal masking produced by computer-generated synthetic vowels was assessed in humans. The durations (100 and 200 ms) of each of 4 vowel-like maskers were employed. The masker was presented at 70 dB SPL. The probe signals were 3 filtered noise bursts whose spectral distributions corresponded to regions of high spectral energy in 3 English stop consonants. Quiet and masked thresholds were determined using the method of adjustment. Data are reported for 2 experienced listeners who participated in all the listening conditions. The results were generally in accord with the results of masking experiments using nonspeech signals in that both the frequency specificity of masking and temporal masking effects were demonstrated.

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