ExtensionClears bins above or below a cutoff point. Interpolate.
| buffer |
fft buffer |
| wipe |
can range between -1 and +1. if wipe == 0 then there is no effect. if wipe > 0 then it acts like a high pass filter, clearing bins from the bottom up. if wipe < 0 then it acts like a low pass filter, clearing bins from the top down. |