Dynamic blending and assimilation in Catalan lingual fricative sequences. An ultrasound and acoustic study

IF 0.8 3区 文学 0 LANGUAGE & LINGUISTICS
Daniel Recasens
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引用次数: 0

Abstract

Ultrasound and center of gravity frequency data for the sequences /ʃ#s/ and /s#ʃ/ produced by Central Catalan speakers reveal that the former sequence is implemented through continuous articulatory and spectral trajectories which, depending on speaker, may be: intermediate between /ʃ/ and /s/ all throughout, thus supporting a dynamic blending mechanism; /ʃ/-like at onset and intermediate between the two fricatives at offset, which is indicative of C1-to-C2 carryover coarticulation. The sequence /s#ʃ/, on the other hand, undergoes regressive assimilation into [ʃ(ʃ)] according to the acoustic signal but less clearly so in the light of the articulatory data. This discrepancy appears to be due to the fact that, while C1=/s/ assimilates indeed to C2=/ʃ/ at constriction location, coarticulation-induced changes in tongue body configuration behind the primary articulator may occur as long as they do not jeopardize the front-cavity dependent frequency characteristics of the [ʃ] frication noise. Differences in articulatory complexity between /ʃ#s/ and /s#ʃ/ appear to result from the production mechanisms involved, i.e., tongue dorsum raising behind the /s/ constriction for /s#ʃ/ and tongue body repositioning for /ʃ#s/. In agreement with this interpretation, /ʃ#s/ but not /s#ʃ/ turned out to be longer than /s#s/ and /ʃ#ʃ/.
加泰罗尼亚语摩擦音序列中的动态混合和同化。超声波和声学研究
中加泰罗尼亚语者发出的 /ʃ#s/ 和 /s#ʃ/ 音序的超声波和重心频率数据显示,前一个音序是通过连续的发音和频谱轨迹实现的,根据说话者的不同,其轨迹可能是:自始至终介于 /ʃ/ 和 /s/ 之间,因此支持动态混合机制;在起音时类似于 /ʃ/,在偏移时介于两个摩擦音之间,这表明 C1-C2 携带共同发音。另一方面,根据声学信号,/s#ʃ/序列倒退同化为[ʃ(ʃ)],但从发音数据来看,这种情况并不明显。这种差异似乎是由于以下事实造成的:虽然 C1=/s/ 在收缩位置确实同化为 C2=/ʃ/,但只要不影响[ʃ]摩擦噪声的前腔频率特性,就可能发生由主要发音器后方的舌体构型共同发音引起的变化。/ʃ#s/和/s#ʃ/之间发音复杂性的差异似乎是由相关的发音机制造成的,即/s#ʃ/的舌背在/s/收缩后抬高,而/ʃ#s/的舌体重新定位。与这一解释一致的是,/ʃ#s/比/s#s/和/ʃ#ʃ/更长,而/s#ʃ/则不然。
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来源期刊
CiteScore
2.10
自引率
12.50%
发文量
20
期刊介绍: The Journal of the International Phonetic Association (JIPA) is a forum for work in the fields of phonetic theory and description. As well as including papers on laboratory phonetics/phonology and related topics, the journal encourages submissions on practical applications of phonetics to areas such as phonetics teaching and speech therapy, as well as the analysis of speech phenomena in relation to computer speech processing. It is especially concerned with the theory behind the International Phonetic Alphabet and discussions of the use of symbols for illustrating the phonetic structures of a wide variety of languages. JIPA now publishes online audio files to supplement written articles Published for the International Phonetic Association
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