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Shape invariant time-scale and pitch modification of speech

机译:语音的形状不变时标和音高修改

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The simplified linear model of speech production predicts that when the rate of articulation is changed, the resulting waveform takes on the appearance of the original, except for a change in the time scale. A time-scale modification system that preserves this shape-invariance property during voicing is developed. This is done using a version of the sinusoidal analysis-synthesis system that models and independently modifies the phase contributions of the vocal tract and vocal cord excitation. An important property of the system is its ability to perform time-varying rates of change. Extensions of the method are applied to fixed and time-varying pitch modification of speech. The sine-wave analysis-synthesis system also allows for shape-invariant joint time-scale and pitch modification, and allows for the adjustment of the time scale and pitch according to speech characteristics such as the degree of voicing.
机译:语音产生的简化线性模型预测,当发音速率改变时,除了时间尺度的变化外,所得波形具有原始的外观。开发了一种在音色过程中保留此形状不变性的时标修改系统。这是通过使用正弦分析合成系统的一个版本来完成的,该系统对声道和声带激励的相位贡献进行建模并独立进行修改。该系统的重要属性是其执行随时间变化的变化率的能力。该方法的扩展应用于语音的固定和时变音调修改。正弦波分析合成系统还可以进行形状不变的联合时标和音调修改,并可以根据语音特征(例如发声程度)调整时标和音调。

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