Aria and Accessibility for the dynamic page title in Angular JS

Question

Can any one guide me how to implement the accessibility on Single Page Application? My precise question is on announcing page title and new content.

HTML

<title data-ng-bind="TitleText" data-id="TitleAnnouncer" aria-live="assertive" aria-atomic="true"></title>

Though page title is getting changed dynamically, screen reader is not recognising the change. I have used both cases for the attribute aria-live="polite" and "assertive" which is of no use.

Following are the links which I referred,

1. http://www.creativebloq.com/web-design/make-single-page-apps-work-screen-readers-101517155
2. http://simplyaccessible.com/article/spangular-accessibility/

Thanks & Regards