一种2.4kb/s改进型MBELP编码

An Improved MBELP Coder At 2.4KBPS

给出了一种改进的2．4kb／s多带激励线性预测（IMBEL）语音编码算法。与传统的MBELP算法相比，该算法在基音提取和清／浊音判决上采取了一些改进措施，使得合成语音质量有一定的提高。

This paper presents an improved MBELP speech encoding algorithm at 2.4kb/s.Compared with conventional MBELP algorithm, this algorithm improves pitch estimation and unvoice/voice decision. The synthetic speech of vocoder based on this algorithm is better than that based on conventional one. The improved MBELP algorithm is discussed in detail and the results of pitch estimation and U/V decision based on the improved MBELP are compared with those based on conventional MBELP.