Clearly the conference is organized by ignorant younglings. DBX is Dolby X - a Dolby noise reduction system for audio recordings, from the late 70s and onward.

Clearly the conference is organized by ignorant younglings. DBX is Dolby X - a Dolby noise reduction system for audio recordings, from the late 70s and onward. We had a separate box in my dad's audio stack that essentially had just one push button on a panel. That button was called DBX and it caused an audio signal to get mangled if it was recorded and de-mangled when it was played back. Good old analog times :)