语音信息中的基音参数检测算法分析  

Pitch Detection Algorithm Analysis in Speech Signal

作　　者：王翠兰[1] 张俊峰[1] 

机构地区：[1]漯河职业技术学院,河南漯河462002

出　　处：《漯河职业技术学院学报》2005年第1期21-23,共3页Journal of Luohe Vocational Technical College

摘　　要：给出了加窗语音的新倒谱模型,提出了基于语音LPC预测残差的倒谱基音周期检测算法(LP -CEP法) ,该算法在倒谱计算中采取高频分量置零的新措施。仿真研究结果表明,该算法相对于传统倒谱基音检测算法(CEP法) ,无论是对不同的干净语音还是对不同信噪比的含噪语音,其基音检测结果都有明显的改善。A new cepstrum model of windowing speech,a new speech pitch detection algorithm(LP-CEP),which uses the cepstrum of the LPC predictive residual, is proposed. The method of removing high frequency components is also used for the cepstrum calculation in this algorithm. Simulations showed that the pitch extracting results of the LP-CEP are superior to that of the conventional cepstrum algorithm both for different speeches and in different SNR of a speech.

关 键 词：算法分析 参数检测 语音信息 基音检测算法 基音周期 预测残差 高频分量 研究结果 检测结果 EP法 倒谱 LPC 新措施 谱计算 信噪比 加窗 

分 类 号：TN912.3[电子电信—通信与信息系统] TP301.6[电子电信—信息与通信工程]