[space bar] toggles the Equalizer Selection
[enter] or [return] checks answer and moves to next question (if a frequency, gain or Q slider is currently focused)
[w] listen to Bypass (flat)
[e] listen to Question
[r] listen to Your Response
numbers 1-9 select octave frequencies of the selected band (e.g. 1 = 63 Hz, 9 = 16000 Hz)
number 0 sets selected band frequency to 20 Hz and gain to 0 dB
up/down arrows change the frequency of the selected band
left/right arrows change the gain of the selected band
[q] selects the frequency band to modify, if number of bands is more than one
[esc] turns Audio off