waveform and the phase spectrum
the power spectrum shows only half the picture: signals which differ in only with respect to phase shifts of their constituent components will have the same power spectrum. (here: 10 Hz sine wave + phase shifted 20 Hz sine wave for simulating different waveform shape) pic.twitter.com/nwTkir23JX
— Natalie Schaworonkow (@nschawor) November 23, 2020