FIR II Decimation Frequency Response

Hi,

Thanks for your help. Sorry for the inconvenience. I still get into the matrix dimension mismatch problem with your latest file. I am not sure why there are a number of compatibility problems arise. To facilitate replication, just would like to check with you which specific Matlab version that you are testing with your fir_inspect.m? I will try to search for the closest version to see if it works. Thank you very much.