Dolby Digital and THX combined resources to bring us Dolby Digital EX, which extrapolated the extra channel from the rear left and right speaker signals, whereas DTS produced encoded DTS Matrix, which ...
To eliminate the last two lines, you'll need to upgrade from a 3.2 system to a 5.2 system or to a Dolby Atmos system with height channels ... If I learned anything in my time with THX and HAA, it's ...