Detection of silent temporal gaps between narrow-band noise makers having second-formantlike properties of voiceless stop/vowel combinations.
Temporal gap detection thresholds were measured in narrow-band noise-burst markers having acoustic characteristics representative of isolated steady-state second-formant (F2) properties for/p,t,k/paired separately with/i,ae,u,o/. The results revealed that gap detection threshold increased systematically as the difference was increased between the simulated stop and vowel F2 frequencies. A strong positive correlation (r = 0.87) between gap detection threshold and linear marker center frequency difference was highly significant (p < 0.001). Differences in other stimulus features had little influence on gap detection performance. Implications for speech perception are discussed.
Formby
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Department of Otolaryngology-HNS, Johns Hopkins University School of Medicine, Baltimore, Maryland 21203-1737.
Barker
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Abbey
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Raney
J J
JJ
D000161:Acoustic Stimulation; D000162:Acoustics; D000328:Adult; D001307:Auditory Perception; D001309:Auditory Threshold; D005260:Female; D006801:Humans; D008297:Male; D009622:Noise; D010700:Phonetics; D013061:Speech Acoustics