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石基琳教授民大讲座通知
作者:王蓓 来源:中国语言学会语音学分会 阅读次数: 1092 发表日期: 2015/5/25 9:45:19

Understanding Phonology by Phonetic Implementation: Mandarin Tone 2 Sandhi

Chilin Shih
University of Illinois at Urbana-Champaign, USA

Many phonological processes originated as phonetic reduction
phenomena. An informative way to understand these processes and the
related issue of the phonology/phonetics interface is to build a
phonetic implementation model that simulates these processes.

This talk investigates production data of Mandarin tone2 (a rising
tone) in an environment that may induce Mandarin tone 2 sandhi, and
shows that the sandhi rule shows properties of a phonetic reduction
phenomenon occurring in prosodically weak positions.

The data supports a model where speech variation arises as the speaker
balances the trade-off relationship between ease of articulatory
effort and communication accuracy. A weight representing prosodic
strength is introduced in the simulation model to capture this
trade-off relationship. The shifting prosodic weight from unit to unit
controls surface phonetic variations which match the production data.
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