New answers tagged


Below shows design considerations for the filter design and you can use common tools in Matlab/Octave and Python Scipy.Signal to determine the filter coefficients (impulse response) using this criteria. (such as the firls and firpm filter design commands in Matlab). When you insert zeros, you create replicas in frequency such as I show in the diagram below, ...


The dot in that summation is just scalar multiplication. And yes, it's a convolution -- you're convolving the input signal by the filter.

Top 50 recent answers are included