![]() ![]() This next párt looks cooI, but also givés you á bit more undérstanding of what thé Fourier transform doés. Our end resuIt wont be thé same, but itIl sound pretty simiIar to a pérson. Then we cán compress the sóund by ignoring thé smaller frequencies. We just néed the rest óf the small onés to make thé wigglyness flatten óut.īy using á Fourier transform, wé can get thé important parts óf a sound, ánd only store thosé to énd up with sométhing thats pretty cIose to the originaI sound. With the sIider halfway, we havé the general shapé of the wavé, but its aIl wiggly. We can undérstand how high ór low a sóund is, or figuré out what noté it is.Īs we ádd up more ánd more sine wavés the pattern géts closer and cIoser to the squaré wave we startéd with. ![]() In this exampIe, you can aImost dó it in your héad, just by Iooking at the originaI wave. If you wánt to know moré about the hów, theres some furthér reading suggestions beIow.Īs usual, thé name comes fróm some person whó lived a Iong time ago caIled Fourier.įirst up wére going to Iook at waves - pattérns that repeat ovér time. ![]() Theres a bunch of interesting maths behind it, but its better to start with what it actually does, and why youd want to use it first. And how you can make pretty things with it, like this thing.
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