For the sample with poly ( vinyl acetate) based LPAs, the morphology exists two transitions with increasing the LPA concentration. 对于加入聚醋酸乙烯酯类LPA的试样,试样的固化形态随着LPA含量的增加发生两次明显的转变。
Introduction on the digital model of speech signal generation and the principle of the Linear Prediction Analysis-by-Synthesis ( LPAS) coding technology which is based on the principle of speech signal generation. 根据语音信号形成机理,介绍语音信号生成的数字模型和线性预测合成分析编码原理。