to remove the remaining offset after applying zero phase shift

[PSADSP]

Hello All,

Im new to Labview and have a query ...

Im applying a low pass filter to an input signal and plotting the output waveform where the output waveform is phase shifted....

For that i used the zero phase shift module from signal processing...

However still there is some offest left and i would like to remove it...

Please could you help me on this asap...

Also after applying the phase shift, the amplitude of the waveform decreased for which i added a ADD factor by 0.2... please let me know if that is right.

Please find attached the image of normal filtered output and output after phase shift.

Thanks in advance...looking forward to your help...

Regards,

PSADSP..

[Henrik_Volkers]

Every filter will need tome time/ samples to settle.Only if you know your signal well enough, you can do some tricks to minimise/avoid these filter artifacts.

The easy solution: take more samples, use a filter with a constant group delay and cut the filter artifacts and correct for the delay.

Hint: The zero phase filter has an boolean input for scaling.