Bubba, you are correct WRT the noise & tip velocity, but your comment about "recovery" isn't correct.

There is a popular myth regarding multi-blade props that their relative loss of efficiency comes from travelling in the wake turbulence of the preceeding blade -- it doesn't happen, other than occasionally with steep-pitched props in a static situation -- but not in flight.

If you have a 3-blade prop with the same dia as a 2-blade, & turning at the same RPM -- it won't be quieter unless it is specifically designed for noise suppression, but it will make a different sound -- a higher frequency sound.