Amplitude filter tool: Zero-phase band-pass filtering of traces (*)
Apply - apply the filter with the current filter settings
Low Freq: <nnn> - displays low frequency corner (Hz), and accepts input of a new value
High Freq: <nnn> - displays high frequency corner (Hz), and accepts input of a new value
Num Poles: <nnn> - displays number of filter poles, and accepts input of a new value