On November 7, 2015 at 05:14, fcwilt said...
The question came about because I was trying to help a family member who was given a Sonos Playbar.
Then they wanted to know if their TV could provide surround sound to the Playbar in which case they might get the rest of the Sonos pieces.
Does the Playbar have a Dolby decoder? If so, then *any* incoming signal can be turned into surround sound, not just Dolby Digital 5.1.
Anyways, this thing has an LED that lights up when it receives Dolby Digital:
[Link: gefen.com]Rather pricey at $100 though:
[Link: amazon.com]There are boatloads of cheap decoders out there, but finding one with a format indicator seems to be an issue.