The traditional LPC vocoder is too simple for the speech signal model which partitions unvoice and voice in whole spectrum of the speech so that the synthetical speech lacks the naturalness and robustness .

传统的 LPC声码器采用简单的 二 元激励模型，不能 更好 地 模拟 实际语音的 特征，致使合成语音的质量以及鲁棒性较差；

The speech synthesis is divided into unvoice ingredient synthesis and voice ingredients synthesis overlying the two parts to get whole voice .

语音合成分为 清音成分合成和浊音成分合成， 然后将两部分叠加得到完整的语音。