fourier wave builder — free browser tool | fatcousin

interactive fourier series · build square + sawtooth + triangle waves from sines · toggle harmonics · live formula · runs locally

L²err0.3152

max|err|0.9922

fourier seriesadding harmonics builds the shape

terms

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f(x) =(4/π)[sin(x)sin(3x)/3sin(5x)/5sin(7x)/7sin(9x)/9sin(11x)/11sin(13x)/13sin(15x)/15sin(17x)/17sin(19x)/19sin(21x)/21sin(23x)/23sin(25x)/25sin(27x)/27sin(29x)/29sin(31x)/31+ …]

harmonicsclick chip to mute · hover to highlight on canvas

ready