Hahaha
I know how to convert THD % to dB but this shoutometer comparison is really giving things a new perspective! Does it have something to do with the real shouting scenario in the otherwise quiet space (mountain for example) or your figures were just for fun?
I absolutely love the shoutometer. But I just realized: when walking in the mountains of Norway, I know from experience that I have no problem at all hearing people shouting from 1 km away. In a residential neighborhood? Probably not. Which means... the shoutometer is probably not completely precise as a measurement scale at the moment! (a shocking realization indeed)