基于计算模型的鼻口区域对鼻音感知及鼻声测量的影响。
Effects of nasal port area on perception of nasality and measures of nasalance based on computational modeling.
作者信息
Bunton Kate
出版信息
Cleft Palate Craniofac J. 2015 Jan;52(1):110-4. doi: 10.1597/13-126.
OBJECTIVE
This study examined the relation between nasal port area, nasalance, and perceptual ratings of nasality for three English corner vowels, /i/, /u/, and /a/.
DESIGN
Samples were simulated using a computational model that allowed for exact control of nasal port size and direct measures of nasalance. Perceptual ratings were obtained using a paired stimulus presentation.
PARTICIPANTS
Four experienced listeners.
MAIN OUTCOME MEASURES
Nasalance and perceptual ratings of nasality.
RESULTS
Findings show that perceptual ratings of nasality and nasalance increased for samples generated with nasal port areas up to and including 0.16 cm(2) but plateaued in samples generated with larger nasal port areas. No vowel differences were noted for perceptual ratings.
CONCLUSIONS
This work extends previously published work by including nasal port areas representative of those reported in the literature for clinical populations. Continued work using samples with varied phonetic context and varying suprasegmental and temporal characteristics are needed.
目的
本研究考察了三个英语角元音/i/、/u/和/a/的鼻口面积、鼻音平衡及鼻音感知评分之间的关系。
设计
使用一个计算模型模拟样本，该模型能够精确控制鼻口大小并直接测量鼻音平衡。通过配对刺激呈现获得感知评分。
参与者
四名经验丰富的听众。
主要观察指标
鼻音平衡及鼻音感知评分。
结果
研究结果表明，对于鼻口面积达0.16平方厘米（含）的样本，鼻音感知评分和鼻音平衡增加，但鼻口面积更大的样本则趋于平稳。感知评分未发现元音差异。
结论
本研究通过纳入代表临床人群文献报道的鼻口面积，扩展了先前发表的研究。需要继续使用具有不同语音语境以及不同超音段和时间特征的样本进行研究。
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