The technology has been used to filter out background voices in audio evidence in a US murder case.
https://www.bbc.com/news/articles/c5yk5mdj9gxo?utm_source=dlvr.it&utm_medium=blogger
https://www.bbc.com/news/articles/c5yk5mdj9gxo?utm_source=dlvr.it&utm_medium=blogger