Do you know good sound
when you hear it?
THX claims to "ensure that the entertainment consumer experienced films as the director intended." This is where Dolby and DTS have come a long way to make it possible through developing multichannel format technologies to electronically deliver the digital sound on DVD to the consumer, defining what we know today as surround sound. But the reproduction thru speakers and amplifiers is lacking.
This is where the DB system comes in (1994), with the goal of "making the sound part of the picture" by actually making also the right hardware to reproduce "the well-defined sound where the energy and emotions of music and film could be felt by the audience with the same intensity intended by their creators."