Cool vid on creation of wave forms using math

[Gswitz]

 

[craigb]

Been there, watched that.  A very good explanation!  I've used Fourier Series for years.

If you're really a math nerd like me, you'll love this video!

And another excellent one showing Fourier Transforms.

 

[Gswitz]

That was awesome. Until now, I didn't really have a picture of how the spectral analysis tools work. 

I think this is in part explains why when you take a pure sine at 440 and look at most of the spectral analysis tools, the spikes are not as narrow as I would expect. I would expect a very precise spike that goes sharply up and sharply down. But if you tighten your time window, your uncertainty increases which is why bars to the left and right of the actual frequency also rise with the primary bar.

It also explains why drawing weird eq curves is expensive. I'm guessing the EQ tools apply a proportional adjustment to the curve using the same technique.

Kinda cool. ?

G