Spitzer Stephanie, Liss Julie, Spahr Tony, Dorman Michael, Lansford Kaitlin
Department of Speech and Hearing Science, Arizona State University, Tempe, Arizona 85287-0102, USA.
J Acoust Soc Am. 2009 Jun;125(6):EL236-41. doi: 10.1121/1.3129304.
Fundamental frequency (F0) variation is one of a number of acoustic cues normal hearing listeners use for guiding lexical segmentation of degraded speech. This study examined whether F0 contour facilitates lexical segmentation by listeners fitted with cochlear implants (CIs). Lexical boundary error patterns elicited under unaltered and flattened F0 conditions were compared across three groups: listeners with conventional CI, listeners with CI and preserved low-frequency acoustic hearing, and normal hearing listeners subjected to CI simulations. Results indicate that all groups attended to syllabic stress cues to guide lexical segmentation, and that F0 contours facilitated performance for listeners with low-frequency hearing.
基频（F0）变化是正常听力听众用于指导对退化语音进行词汇切分的多种声学线索之一。本研究考察了F0轮廓是否有助于佩戴人工耳蜗（CI）的听众进行词汇切分。在未改变和F0平坦的条件下引出的词汇边界错误模式，在三组人群中进行了比较：使用传统人工耳蜗的听众、使用人工耳蜗且保留低频声学听力的听众，以及接受人工耳蜗模拟的正常听力听众。结果表明，所有组都关注音节重音线索来指导词汇切分，并且F0轮廓有助于低频听力听众的表现。
