N=15, 。用Hanning窗设计一线性相位带通滤波器，观察它的实际3dB和20dB带宽。N=45，重复这一设计，观察幅频和相位特性的变化，注意长度N变化的影响。-N = 15,. Hanning window design with a linear-phase band-pass filter, observe its actual 3dB and 20dB bandwidth. N = 45, repeat the design, observe the amplitude-freque

用MATLAB分别利用汉明窗、汉宁窗、布莱克曼窗和凯泽窗设计一个带通滤波器-Respectively, with the use of MATLAB Hamming window, Hanning window, Blackman window and Kaiser window design a bandpass filter

fft汉宁窗 MATLAB程序 幅频特性的matlab实现 汉宁窗的产生程序，分析他们的幅度和相位响应(FFT MATLAB program Hanning window amplitude and frequency characteristics matlab program Hanning window, analysis of the amplitude and phase of their response)