巴特沃斯带通数字IIR滤波器对加了高斯随机噪声和正弦噪声的语音信号进行滤波，并绘制了两滤波器滤波后的语音信号时域图和频谱图。-Butterworth band-pass digital IIR filter added Gaussian random noise and sinusoidal noise of the speech signal is filtered, and draw a diagram of two filter the filtered speech signal tim

是一种基于matlab做的一个频谱分析仪，带有GUI界面。可以自己产生语音信号分析，也可以从文件夹中读取信号分析。-Is a spectrum analyzer based on MATLAB, with GUI interface. You can generate voice signal analysis, you can read the folder signal analysis.

用MATLAB编程实现实现滤波，与数字信号处理相关(Implementing filtering)