多脉冲激励线性预测编码算法研究  

Research on multi-pulse linear predictive coding algorithm

作　　者：李心愿[1] 何培宇[1] 徐自励[1] 邓方[1] 

机构地区：[1]四川大学电子信息学院,成都610064

出　　处：《四川大学学报（自然科学版）》2007年第1期77-80,共4页Journal of Sichuan University(Natural Science Edition)

摘　　要：提出一种改进型的多脉冲激励线性预测语音编码算法,并将变阶线性预测技术应用于此算法.改进后的算法与原算法相比,降低了计算复杂度,且对激励脉冲位置的估计更加准确.仿真结果表明,该算法不仅提高了合成语音的质量,而且进一步降低了语音编码的速率.In this paper, an improved muki-pulse linear predictive coding （MPLPC） algorithm is proposed. The variable-order technique is applied to this algorithm. Compared with MPLPC, the computational complexity of the improved algorithm is decreased and the misjudgement to the exeitation pulses＇ positions is also decreased. The simulation result shows that the quality of the synthesized speech is improved and the encoding rate is reduced.

关 键 词：多脉冲激励 变阶线性预测 低速率语音编码 

分 类 号：TN781[电子电信—电路与系统]