Hello Piclist, I4m looking for a Spectrum analyzer software (freeware) where I can define a periodic waveform. Is to analyze harmonics in waveforms. Thanks in advance, Gus -- Digiled mailto:mail@digiled.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics