应用小波分析技术进行汉语语音基音频率分析的研究

APPLYING WAVELET DECOMPOSITION IN ANALYSING THE PITCH OF CHINESE SPEECH

基音频率是语音信号中的一个重要信息。准确地进行基音频率的分析和提取一直是语音合成及语音识别等领域中所关注的核心问题之一。本文结合语音信号中基音频率的频域特征及汉语语音的特点,利用小波分析技术,对汉语语音中韵母的基音频率等信息的提取进行了研究。通过对试验结果的比较和分析,得到了相关的一些结论。

The pitch or fundamental frequency is an important feature of speech signal. The accurate pitch analysis and extraction is always one of the most key issue in speech synthesis and speech recognition. In this paper, taking account of the features of pitch and Chinese speech, we apply the Wavelet decomposition technique to analyse the pitch of Chinese speech. With discussing and comparing the test result, we obtain some useful results.