Headphones; Earphones; Earbuds; Audio equipment, namely, audio apparatus comprising sound transmitting apparatus, sound sensors, microphones, and recorded software for delivering personalized sound based on the user's hearing; Audio equipment, namely, audio apparatus comprising sound transmitting apparatus, sound sensors, microphones, and recorded software for measuring otoacoustic emissions from a user's ear; Downloadable and recorded software for discerning the characteristics of the user's hearing to deliver personalized audio content based on the user's hearing profile; Downloadable and recorded software for discerning a user's hearing profile used to alter audio content; Downloadable and recorded software for personalizing audio content based on the user's hearing profile; Downloadable mobile application software for discerning the characteristics of the user's hearing to deliver personalized audio content based on the user's hearing profile, and for personalizing audio content based on the user's hearing profile

Audio mastering of recording based upon pre-ascertained hearing profile

Providing temporary use of online non-downloadable software which uses the characteristics of the user's hearing to deliver personalized audio content based on the user's hearing profile; Software as a service (SAAS) services featuring software for discerning a user's hearing profile used to alter audio content; Software as a service (SAAS) services featuring software for personalizing audio content based on the user's hearing profile