普通话声调识别参数除常用的基音轮廓外，基音的一阶差分、能量及能量的一阶差分等也具一定的声调特征。
In a mandarin tone recognition system, the parameter is usually pitch contour. But the tone can also be partly characterized by pitch difference, energy and energy difference.
普通话声调识别参数除常用的基音轮廓外，基音的一阶差分、能量及能量的一阶差分等也具一定的声调特征。
In a mandarin tone recognition system, the parameter is usually pitch contour. But the tone can also be partly characterized by pitch difference, energy and energy difference.
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