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## Main Question or Discussion Point

Hi all,

I am currently looking into the energy correction factor of the Hann window.

So far I have found that to correct for the application of Hann-window and Fourier transform the result needs to be multiplied by sqrt(32)/sqrt(3).

Can any of you explain how to get that factor ?

The amplitude correction factor is 2, that much i grasp...

There is a another factor of 2 as the FFT is performed as a complexed valued operation.

These two factors multiplied is 4 (duhh !)

And when removing that factor from sqrt(32)/sqrt(3) the result is ;

4*sqrt(2)/sqrt(3).

the sqrt(2)/sqrt(3) is the mysteries part. Can anyone explain how to reach this factor ?

Best regards

Lindemose

I am currently looking into the energy correction factor of the Hann window.

So far I have found that to correct for the application of Hann-window and Fourier transform the result needs to be multiplied by sqrt(32)/sqrt(3).

Can any of you explain how to get that factor ?

The amplitude correction factor is 2, that much i grasp...

There is a another factor of 2 as the FFT is performed as a complexed valued operation.

These two factors multiplied is 4 (duhh !)

And when removing that factor from sqrt(32)/sqrt(3) the result is ;

4*sqrt(2)/sqrt(3).

the sqrt(2)/sqrt(3) is the mysteries part. Can anyone explain how to reach this factor ?

Best regards

Lindemose