matlab程序滤波器,有IIR各种滤波器，可以实现低通，高通，带通，带阻等滤波器-matlab program filters, there are various IIR filters can achieve a low pass, high pass, band pass, band stop filter

对采集的语音信号进行滤波，谱分析，并进行前后时域和频域波形比较。可选择IIR和FIR滤波器进行高通，低通和带通滤波。-To obtain the voice signal filtering, spectrum analysis, and the time domain and frequency domain waveform and compared. Can choose IIR and FIR filter for qualcomm, low pass and bandpass filt

产生线性调频信号,可以是宽带，也可以是窄带信号。还有低通滤波器(A linear frequency modulated signal can be produced ,wideband or narrowband. There are also low-pass filters)