I need to convert this 12 Tap Low Pass Filter to a High Pass Filter.
The coefficients of the Low Pass Filter are as follows:
h[k] = [0.022 -0.083 -0.083 0.083 0.311 0.417 0.311 0.083 -0.083 -0.083 0.022 0.083]
My understanding is that if its an even-tap - We Multiply the coeffs
by -1.
However the answer is:
hT[k] = [-0.022 -0.083 0.083 -0.083 -0.083 0.311 -0.417 0.311 -0.083 0.083 -0.083 -0.022 0.083]
I do not know how this came about. I looked for answers online alot but did not get the answer. Any help is appreciated