Ahead of Global Accessibility Awareness Day this week, Apple is issuing its typical annual set of announcements around its assistive features. Many of these are useful for people with disabilities, but also have broader applications as well. For instance, Personal Voice, which was released last year, helps preserve someone's speaking voice. It can be helpful to those who are at risk of losing their voice or have other reasons for wanting to retain their own vocal signature for loved ones in thei...