一种有效的语音变调算法

语音音调变换是语音处理中一项非常重要的内容。不同的语音音调主要体现在语音的基音周期和共振峰频率的差别上。本文以线性预测为基础,按照混合激励线性预测声码器中提取基音周期的方法来获取语音信号的基音周期,并利用内插和抽取的基本原理来改变基音周期,在语速不变的前提下实现语音声调的变化。

Efficient algorithm for pitch-scale modification

Pitch-scale modification is an important technology of speech processing. The different pitch and the different formant frequency decide the different pitch-scale. In this paper, a method of pitch-scale modification based on the line prediction coding is introduced. According to the method of getting pitch in MELP, the pitch of speech is computed. And the pitch is changed by using interpolation or decimation.