Sensitivity to a break in interaural correlation is co-modulated by intensity level and interaural delay.
This study investigated whether sound intensity affects listeners' sensitivity to a break in interaural correlation (BIC) embedded in wideband noise at different interaural delays. The results show that the detection duration threshold remained stable at the intensity between 60 and 70 dB SPL, but increased in accelerating fashion as the intensity decreased toward 40 dB SPL. Moreover, the threshold elevated linearly as the interaural delay increased from 0 to 4 ms, and the elevation slope became larger as the intensity decreased from 50 to 40 dB SPL. Thus, detecting the BIC is co-modulated by both intensity and interaural delay.
Department of Psychology, Department of Machine Intelligence, Speech and Hearing Research Center, Key Laboratory on Machine Perception (Ministry of Education), Peking University, Beijing 100871, People's Republic of China. konglingzhi@pku.edu.cn
Lingzhi
L
Kong
Zilong
Z
Xie
Lingxi
L
Lu
Xihong
X
Wu
Liang
L
Li
D000161:Acoustic Stimulation; D000328:Adult; D000704:Analysis of Variance; D001301:Audiometry, Pure-Tone; D001306:Auditory Pathways / Q000502:physiology*; D001307:Auditory Perception; D001309:Auditory Threshold; D003463:Cues; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D009622:Noise / Q000009:adverse effects; D010470:Perceptual Masking; D011571:Psychoacoustics; D017603:Signal Detection, Psychological; D013997:Time Factors; D013998:Time Perception; D055815:Young Adult