If you want to know what a human being thinks of pressure waves (ie, what we hear) then you look at the Fletcher-Munson equal loudness contours.
Great post thanks....
It is the reason why the peculiarity of each specific pair of human ears being different, we must adapt and fine tuned the relation of our room to the speakers characteristic not in regard of the absolute meaning of the specs sheet but the way it is PERVEIVED by our OWN ears in our room...
Like any audio engineer take into account this "contour" to drive his mixing, in our own room knowing that our own ears will experiment timbre perception slightly differently because of the specific manner our own ears filter and group the sound waves amplitude , we must create a specific set of pressure zones in our room that will please our ears and will compensate for our speakers particular specs.......
We can also pay an acoustician to redesign our small room acoustically for our specific audio system... We can made it ourself at low cost...
Acoustic passive treatment and mechanical active control can play for the speakers/ ears the function of a compensating hearing aid , the room being now an activated device for a better S.Q.
In audio our untreated and uncontrolled room has more limitating effects than our own innate hearing limitations which we can compensate for....