[LAD] Converting single-cycle wave to harmonic spectrum

Hey hey, I'm trying to convert a single cycle wave to a harmonic spectrum. I know that in theory this is a job for standard FFT. I wondered if there isn't a "simpler" way given a few assumptions about the input. The input waveform is exactly one single cycle The waveform has only harmonic overtones. That means that only integral multiples of the base frequency need to be considered and the specific Nyquist frequency is determined by the number of samples (I think). I treid searching, but it appears that I don't have the right keyword to hand, getting only very general results bordering on the off-topic. :) Can anyone help? A good keyword, name of an algorithm or a general name for this specific task would be helpful enough, I suppose. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c She's so lucky, she's a star But she cry, cry, cries in her lonely heart... <3 (Britney Spears)