- #1
Lindemose
- 2
- 0
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