基于形态滤波和小波变换的基音检测新方法  

A New Approach of Pitch Detection Based on Morphology Filter and Wavelet Transform

作　　者：王和平[1] 康景利[1] 

机构地区：[1]北京理工大学机电工程学院,北京100083

出　　处：《电声技术》2005年第5期48-51,共4页Audio Engineering

摘　　要：提出了一种基于数学形态滤波和小波变换相结合的基音检测方法。检测前采用文中提出的形态滤波算法对噪声信号进行滤除,突出了基音周期。用小波变换对滤波后语音信号的突变点进行检测,进而提取出了基音周期。实验表明该方法对噪声有较强的鲁棒性,能够精确地检测出基音周期。This paper proposes a new pitch detection method with the combination of morphology filter and wavelet transform. Before detection,a pre-process based on morphology filter is performed to remove the noise. Then the pitch is detected by wavelet transform. Experiments show that this method can realize pitch period calculation accurately and it has better robustness.

关 键 词：基音检测 形态滤波器 小波变换 

分 类 号：TN912[电子电信—通信与信息系统]