My friend and I were talking about power requirements in loudspeaker design and the fact that almost all of the power is required to drive the woofers and move lots of air.
Then he asked “do basses exert more energy talking or singing than sopranos?”
Or put another way, does a lower frequency voice need more power (energy) to achieve the same volume as a high voice?
So does this question basically boil down to the following?
For a constant “perceived loudness”, what does the plot of energy vs. frequency look like?
Once we know what the plot looks like, we could simply compare the bass and soprano regions.