语音信号的加窗傅里叶变换研究

Research for Windowed Fourier Transform of Speech Signal

本文在对矩形、汉宁(Hanning)、海明(Hamming)及布莱克曼窗函数进行仿真分析的基础上,在语音信号的频谱分析中应用了加窗傅里叶变换.语音信号在不同窗函数傅里叶变换下的频谱分析表明,恰当选择窗函数并对语音信号进行加窗傅里叶变化是语音信号频域分析的一种有效方法,从而得出了窗函数选择的一般原则.

In this paper, we applied the windowed Fourier transform for the speech signal spectrum analysis on the basis of simu- lation analysis for the rectangular, Hanning, Hamming and the Blackman window function. Speech signal in a different window function Fourier transform spectrum analysis showed that the proper choice of window function and speech signal windowed Fourier transform was an effective method for a voice signal frequency domain analysis, thus obtain the general principle of choice for window function.