RX includes a 4 band parametric EQ module with adjustable notch filters and lowpass/highpass filters.
EQ type - "Analog" is a non-linear phase IIR filter, "Linear-phase" EQ uses a FIR filter of a specified FFT size
FFT size - This controls the number of bands, i.e. frequency resolution vs. time resolution.
Frequency and Gain:
The yellow X’s mark each of the 4 peak filter bands, with the yellow horizontal arrows indicating the position of the Q/Slope. You can adjust an EQ band by clicking on a yellow X and dragging the crosshairs to change the frequency and gain of the band.
Q/Bandwidth:
If you move the mouse over the "handles" on the side of the band, you can adjust the Q or bandwidth of the EQ by dragging with the mouse and widening the band.
You can also use Page Up and Page Down keys to change the width of the EQ band, or if you have a wheel mouse, you can use the mouse wheel to widen a selected band.
Visuals:
As you adjust a band you will see two EQ curves. The orange curve is the composite of all EQ bands while the brown curve shows the EQ curve of the selected band.
Table:
If you'd rather use numbers as opposed to visual EQ bands, we have also provided a table view of the EQ band settings. You can enter values for the EQ bands directly in this table. You can also disable bands with this table by clicking on the square box above the band.