http://en.wikipedia.org/wiki/Square-integrable_function(adsbygoogle = window.adsbygoogle || []).push({});

According to the tutorial: it says

g*(x) is the complex conjugate of g

but I can't get the idea from where this g(x) function comes, than why is it the complex conjugate?

And it seems i can't visualize the inner product space? Some practical example would help me a lot.

Thanks!

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# Short Time Fourier Transform

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