The low-pass filter has a constant gain Af from 0 to high cutoff frequency f (H). At f(H) the gain is 0.707Af and after f (H) ... The cutoff frequency is now made 20kHz. For getting cutoff frequency ...

The " modification" caused the unit to be 7.5 db down at 20 kHz and a pronounced phase shift at 20 kHz. The second unit was a very old unit dating from the early 1980's that had no over sampling and ...

We're all familiar with using filters in our music-making escapades: low-pass, high pass, band-pass and band-reject filters offer huge scope for sculpting and colouring sound. There is another type of ...