Try looking up Fast Fourier Transforms. That will convert your signal to an array of frequency magnitudes, you can attenuate the lower frequencies, and then reverse-FFT back to the filter signal.

Determine the center frequency, maximum gain and bandwidth for the filter in the figure shown. The quality factor of the filter is equal to With Q=4.16, the bandwidth for the filter is equal to Source ...

We're all familiar with low-pass filters, high-pass filters, band-pass filters, band-stop filters and other filter types, but the all-pass filter is perhaps less well known. All-pass filters have no ...

DELTA’s innovative family of linear variable filters is extended with a sixth type – the best ever linear variable VIS band pass filter (LVVISBP). DELTA has lifted the application range of variable ...