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LPC 声码器在准确提取声道参数的情况下,激励模型的优劣直接影响着综合语音的质量。目前,多脉冲激励模型(MPEM)是一种较理想的模型,但传统的算法较复杂,难以实时处理。本文推导出了一种简单、有效、灵活、非迭代的多脉冲激励模型的算法。在理论上与传统算法作了比较,并做了计算机仿真实验。结果证明其简快算法是有前途的,至少是值得对它作进一步研究的。
LPC vocoder in the case of accurate extraction of channel parameters, the merits of incentive models directly affect the quality of integrated speech. At present, multi-pulse excitation model (MPEM) is an ideal model, but the traditional algorithm is more complex and difficult to deal with in real time. In this paper, a simple, efficient, flexible and non-iterative multi-pulse excitation model algorithm is derived. In theory, compared with the traditional algorithm, and made a computer simulation. The results show that its fast algorithm is promising, at least it is worth to further study it.