Transformational
My laptop is scorching my lap. It’s pushing 70C on both cores. Like me, it gets hot and confused when forced to think too hard about math all in one go. Unlike me, it doesn’t scribble all over it’s work and swear at the obnoxiously curly integral symbols.
Why the laptop torture sesh? Well, I’m back on the wildly careening Fast! Fourier! Transform! bandwagon (the exclamation marks are for extra excitement). FFTs are a way to break down a raw chunk of sound (for example, an MP3) into all of its individual frequencies. So for example, if you had a recording of a pure C chord, running an FFT on it would show that it had C, E and G tones in it.
It looks a lot more interesting when there is more stuff going on than that…
…but than it is also harder to see what is happening.
I’m excited about this again because I came across this page, in which they have an algorithm that can calculate the spectrograms waaaay faster than my old crummy one. I haven’t had time to pick apart why that is yet, but it’ll for SURE result in some sexy animations. Otherwise I want all my money back.
