基于小波变换的语音基音周期实时检测算法  

Real-time Pitch Detection of Speech Signal Based on Wavelet Transform

作　　者：沈江峰[1] 张刚[1] 

机构地区：[1]太原理工大学信息工程学院,山西太原030024

出　　处：《太原理工大学学报》2007年第6期521-523,539,共4页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(60372058);山西省自然科学基金资助项目(20051009)

摘　　要：针对基音周期检测实时性的要求,提出了基于小波变换的语音基音周期实时检测算法。该算法利用小波变换极值与信号突变点之间的关系,将小波域波形与时域波形相结合,采取自适应基准、多特征参数提取小波系数极大值,并在2.5 ms时间内捕捉并检测到新的基音脉冲位置。实验表明,该算法对语音和残差信号取得了较好结果。This paper introduces a real-time pitch detection algorithm of speech signal used for real-time pitch detection. This algorithm detects pitch pulse in 2.5ms with selected wavelet transform maxima by multi-characteris combining wavelet with time domain waveform, adopting adaptive methods and tic parameters. The results show that the proposed method is suitable for both clean and residual signals.

关 键 词：基音检测 小波变换 短时能量 声门闭合瞬间 

分 类 号：TN912.3[电子电信—通信与信息系统]