ON 20080310@7:59:26 PM at page:
http://www.piclist.com/io/pwm/harmonic.htm#39517.8261805556
James Newton[JMN-EFP-786] published post 39517.8261805556

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This is extremely similar to work in power electronics that started 40+ years ago called "harmonic elimination."  There are general algorithms to eliminate any number of harmonics from the baseband and they don't require n! pulses.  Search IEEE literature for any of about 100 references on the subject.
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