[brucek]

The waterfall is most useful (and use to be limited to) the subwoofer range.

Use a time axis of about 300ms and set the vertical (45dB-105dB) and horizontal (15Hz-200Hz).

Now you'll be looking at successive slices in time. Move the slider to one and you'll have a match to your frequency response graph. Start moving the slider out to 30 slices to watch how the level drops in the room with each slice.

Above the subwoofer range, the RT60 is useful.

brucek