调制的起始/结束信息对调幅深度辨别力的贡献。
Contribution of onset/offset information of modulation to amplitude modulation depth discrimination.
作者信息
Edwards Derek R, Lee Jungmee, Andrews Jennifer, Wong Aileen
机构信息
Department of Speech, Language, and Hearing Sciences, University of Arizona, 1131 E. 2nd Street, Tucson, Arizona 85721-0071, USA.
出版信息
J Acoust Soc Am. 2008 May;123(5):EL111-5. doi: 10.1121/1.2895758.
A previous study by [J. Lee, G. Long, and C. Jeung, J. Acoust. Soc. Am. 119, S3332 (2006)] found that information at the onset or offset of modulation could be utilized for improved amplitude modulation (AM) depth discrimination in a continuous carrier condition (carrier presented 250 ms earlier and later than the modulator). In this study, the relative contribution of information at the onset or offset of the modulation was examined with an onset-fringe carrier condition (carrier begins 250 ms earlier than the modulator) and an offset-fringe condition (carrier ends 250 ms later than the modulator). The results suggest that modulation information at the onset might be utilized more than at the offset.
[J. 李、G. 朗和C. 郑，《美国声学学会杂志》119, S3332 (2006)] 之前的一项研究发现，在连续载波条件下（载波比调制器提前和延迟250毫秒呈现），调制起始或结束处的信息可用于改善调幅（AM）深度辨别。在本研究中，通过起始边缘载波条件（载波比调制器提前250毫秒开始）和结束边缘条件（载波比调制器延迟250毫秒结束）研究了调制起始或结束处信息的相对贡献。结果表明，起始处的调制信息可能比结束处的更易被利用。
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