In a previous thread I had a question about time domain aliasing and you guys helped me out in understanding some. Mr. Lyons gave a really good explanation. Previous thread: http://www.dsprelated.com/showmessage/209160/1.php I found the a thesis "Time Aliasing Methods of Spectrum Estimation" on some of the topic. Good reading.... But questions just lead to more questions. http://cdm15999.contentdm.oclc.org/cdm/singleitem/collection/ETD/id/16/rec/2 Ive also read papers on real time sliding DFTs of various sorts. My question is for those implimentation gurus out there. Would it be possible to impliment a 'decimated in frequency sliding dft' efficiently in real time through the use of time domain aliasing? If the operation involves time domain alising which is some form of overlap and add, would that process have to be done off line, before the DFT is done or is there a clever way to overlap the modulo N samples, drop off the last one and add the newest one. If it could be done in real time, it may be cool for some appllications that have the need integer spaced samples of the DFT with more 'efficitve frequency resolution'. Any thoughts? _____________________________ Posted through www.DSPRelated.com
Time Aliasing Methods of Spectrum Estimation Real Time?
Started by ●August 19, 2013