Post by cbee1 on Mar 17, 2006 16:13:32 GMT -5
I'm trying to get a clarification on side lobes with the dft and how to eliminate them. I have read that side lobes are a resuilt of sampling a signal and not matching the ends of the signal, as a complete cycle would match. I have also read that, the best way to get a good clean dft or "perfect" DFT would be to end the sampling in such a way that it forms a complete cycle that can be concantenated to a copy of it self without discontinuities. Is this a correct assumption? Also, If I have a 200 hz sampling rate, I can resolve up to 100 hertz. But does zero padding, or copying the signal and concatenating multiple times allow me to have smaller delta f resolutions? I know these questions are faily elementary, and I could experiment around with matlab, but I have to get aquainted with it. Thanks!! 
