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为考察普通话焦点重音对窄焦点域内和域外音段的产出和声学特征的影响,使用动态电子腭位(EPG)获取/t/和/i/的舌腭接触信号,同时采集同步的声门阻抗(EGG)和声学信号。分析结果表明,在窄焦点域内,/t/的舌腭接触面积增大,生理持阻时长增长,持阻段声门状态相对紧张。/i/的舌体上升并前移,元音时长和声强增长或增大,元音频谱发生变化。焦点重音的溢出效应不明显。研究结果表明:焦点重音使得域内所有音段的发音动作均增强,但是域外音段的产出和声学特征一般不受影响。
To investigate the effect of mandarin focus acoustics on the output and acoustic characteristics of narrow and intra-field segments, a dynamic electronic palatal (EPG) acquisition of / t / and / i / tongue-palate contact signals was also performed to acquire synchronized glottis Impedance (EGG) and acoustic signals. The analysis results show that in the narrow focus area, the contact area of the tongue / palate is increased, the duration of physiological resistance increases, and the state of the glottis in the holding segment is relatively tight. / i / The tongue rises and moves forward, the vowel duration and sound intensity increase or increase, vowel sound spectrum changes. Spillover effect of focal stress is not obvious. The results show that the focus accent enhances the pronunciation of all the segments in the domain, but the output and acoustic characteristics of extra-segment segments are generally unaffected.