Novak Djokovic is the most successful player in Australian Open history. The Serbian star has been simply unstoppable in Melbourne, winning all 10 of the Australian Open finals he has participated in.

This article is brought to you by our exclusive subscriber partnership with our sister title USA Today, and has been written by our American colleagues. It does not necessarily reflect the view of The ...

Abstract: Parametric speakers (PS) can reproduce hyperdirectional sound, which somebody can reflect off an object to generate a point sound source at the reflection point. We hypothesized that spatial ...