摘要
文章提出一种根据ＬＰＣ 语音残差信号在频域的子带波形，计算其自相关函数，分析每个子带的周期性和非周期性。进行清、浊音判决的方法，可有效地降低 ＭＢＥＬＰＣ 算法中ＵＶ 判决的计算复杂程度，减少计算所需的存储空间。该判决方法与全带语音ＵＶ 判决的原理一致。经实际听音试验，这种判决结果合成的语音效果并不劣于ＭＢＥ
This paper gives a method of multi band UV decision Considering the frequency wave form of each sub band of LPC residue, autocorrelation function is calculated, and its periodicity and non periodicity are analyzed , then obtain decision of voice or unvoice, which can greatly decrease the computation complexity and reduce the memory required in the MBE LPC algorithm The method is in coincidence with that of full band speech UV decision The subject listening test shows that the speech synthesized by this method is not inferior to that by the standard MBE algorithm
出处
《微电子学与计算机》
CSCD
北大核心
1999年第5期1-4,共4页
Microelectronics & Computer
基金
国家自然科学基金项目
