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首页> 外文期刊>American journal of applied sciences >Effects of Environmental Noises on Fundamental Frequency Contours of Thai Dialects
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Effects of Environmental Noises on Fundamental Frequency Contours of Thai Dialects

机译：环境噪声对泰国方言基本频率轮廓的影响

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Problem statement: Fundamental Frequency (F0) is an important speech feature defining the human speech prosody. It is the resultant of the vibration of human's vocal chords in speech production. In Thai, there are four main dialects spoken by Thai people residing in four core region including central, north, northeast and south regions. Environmental noises are also playing an important role in corrupting the speech quality. The study of effects of noises the F0 contour for Thai dialects reveals the important of noise reduction issue. Approach: Four types of environmental noises were recorded with different levels of power. It was subsequently mixed with clean speech. The F0 contours from different dialects, different types of noises and different levels of noises was extracted. The difference in term of Root Mean Square Error (RMSE) between the F0 contour of clean speech and the noise-corrupted speech was calculated. Results: In the experiments, each regional dialect includes 10 samples of 10 utterances with male and female speech. Four types of noises include train, factory, car and air conditioner. Moreover, five levels of each type of noise are varied from 0-20 dB. The results show that effects of distinguish types of noises are different. Four kinds of regional dialects also cause the differences in RMSEs. Conclusion: The recorded noises deteriorate the F0 contours for all Thai dialects.
机译：问题陈述：基本频率（F0）是定义人类语音韵律的重要语音功能。它是语音生成中人声和弦振动的结果。在泰国，居住在四个核心区域（包括中部，北部，东北和南部地区）的泰国人说四种主要的方言。环境噪声在破坏语音质量方面也起着重要作用。对泰语方言F0轮廓的噪声影响的研究揭示了降噪问题的重要性。方法：记录了四种具有不同功率水平的环境噪声。随后，讲话混在一起。提取了来自不同方言，不同类型的噪声和不同级别的噪声的F0等高线。计算了干净语音的F0轮廓与受噪声干扰的语音之间的均方根误差（RMSE）项之差。结果：在实验中，每个区域方言都包含10种10种语音的样本，其中包含男女语音。四种噪声包括火车，工厂，汽车和空调噪声。此外，每种噪声的五个级别在0-20 dB之间变化。结果表明，区分噪声的影响是不同的。四种区域性方言也导致RMSE的差异。结论：记录的噪音使所有泰国方言的F0轮廓变差。

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