One of the linked sites goes deep on some old tests. I couldn't find any recordings of the subwoofer tones they used though. http://staff.washington.edu/dushaw/

One of the linked sites goes deep on some old tests. I couldn't find any recordings of the subwoofer tones they used though. http://staff.washington.edu/dushaw/heard/index.shtml http://staff.washington.edu/dushaw/heard/index.shtml