Binaural Release From Masking for Speech and Gain in Intelligibility
作者:
H. Levitt,
L. R. Rabiner,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1967)
卷期:
Volume 42,
issue 3
页码: 601-608
ISSN:0001-4966
年代: 1967
DOI:10.1121/1.1910629
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Relative importance of different frequency regions in binaural release from masking (for detection) and binaural gain in intelligibility was investigated. Experiments showed that the release from masking (SπN0 case) for single words in high‐level, broad‐band Gaussian noise is roughly 13 dB and is determined primarily by interaural phase opposition in the low‐frequency (<500 Hz) region. The binaural gain in intelligibility at the 50% level was on the order of 6 dB and only partly dependent on interaural phase opposition in the low‐frequency region. Interaural amplitude differences were not considered in the investigation. Subjecting the speech to a large interaural time dealy with the noise binaurally in phase resulted in a relatively constant masking level difference approaching 13 dB over the measured range from 0.5 to 10 msec. The corresponding binaural gain in intelligibility at the 50% level was on the order of 3 dB.
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