Voice is something I recognize in others, but I’m not always sure I know my own. In part, I attribute that to many years of training in the “neutral” voice of journalism. That’s why I like reading what other writers say about their voices. Here, for example, is David Arnold’s take on it.
Why YA? David Arnold Explains How He Found His Voice and His Readers « musing
http://parnassusmusing.net/2015/02/25/why-david-arnold-author-of-mosquitoland-writes-ya/