A mobile phone or other personal communication device includes resources applying measures of an individual’s hearing profile, personal choice profile, and induced hearing loss profile, separately or in combination, to build the basis of sound enhancement. The mouthpiece has first and second ends with the first end defining an aperture for fluidly communicating with a mouth of a user such that the user can inhale through the aperture. Deflections are determined for one or more flight control surfaces based on the changes in TRA, and accordingly, the one or more flight control surfaces are deflected automatically to generate supplemental drag.