Uses 2nd order allpass filters for the 2x upsampling, followed by a notch filter just above Nyquist. -Uses 2nd order allpass filters for the 2x upsampling, followed by a notch filter just above Nyquist.

设计低通滤波器的matlab源程序 IIR一阶低通滤波器,高通滤波器,Notch 嵌波滤波器()