Effects of Lexical Tone Contour on Mandarin Sentence Intelligibility
Effects of Lexical Tone Contour on Mandarin Sentence Intelligibility
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DOI：
10.1044/1092-4388(2013/12-0324
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发表时间：
2014-02-01
影响因子：
2.6
通讯作者：
Hu, Yi
中科院分区：
文献类型：
--
作者：
Chen, Fei;Wong, Lena L. N.;Hu, Yi
目的：本研究考察了在安静和噪音条件下词汇音调轮廓对普通话句子可懂度的影响。方法：使用文本到语音合成引擎合成普通话句子，每个词携带原始词汇音调、平调或从4个普通话词汇音调中随机选择的音调。合成的语音信号被提交给11名听力正常的听众在安静和语音形状的噪声在0 dB的信噪比recognition.Results：正常听力的听众几乎完美地识别普通话句子产生的修改后的音调轮廓在安静，但性能大幅下降噪声。结论：与以往的研究结果在一定程度上一致，本研究结果表明，词汇声调是相对冗余的线索，在安静的汉语句子的可理解性和其他线索可以补偿扭曲的词汇声调轮廓。然而，在噪声中，结果提供了直接的证据，词汇声调轮廓是重要的汉语句子的识别。
Purpose: This study examined the effects of lexical tone contour on the intelligibility of Mandarin sentences in quiet and in noise.Method: A text-to-speech synthesis engine was used to synthesize Mandarin sentences with each word carrying the original lexical tone, flat tone, or a tone randomly selected from the 4 Mandarin lexical tones. The synthesized speech signals were presented to 11 normal-hearing listeners for recognition in quiet and in speech-shaped noise at 0 dB signal-to-noise ratio.Results: Normal-hearing listeners nearly perfectly recognized the Mandarin sentences produced with modified tone contours in quiet; however, performance declined substantially in noise.Conclusions: Consistent with previous findings to some extent, the present findings suggest that lexical tones are relatively redundant cues for Mandarin sentence intelligibility in quiet and that other cues could compensate for the distorted lexical tone contour. However, in noise, the results provide direct evidence that lexical tone contour is important for the recognition of Mandarin sentences.