I hope this is the right forum - I looked at all the Stack Exchange communities, and this seems the best fit...
As a musician, engineer, and home AV enthusiast, I encounter various digital audio bitstreams from stereo SPDIF to Dolby Digital 5.1, to DTS, Atmos, etc. These can be transported over various physical media - Coax, Optical, HDMI. When things don't work, I find I spend an excessive amount of time debugging.
I'm looking for a tool to help diagnose these bitstreams better than trial and error - answering the questions: is there a signal, and if so, what is the type?
Such a tool could be implemented as standalone hardware or software that runs on Linux or Windows. Even a Raspberry Pi should have sufficient capability to identify the bitstream. I've been searching and have found nothing like this.
If I have to roll my own, the best information I found (on DD only) is at Wikipedia which links to the ATSC AC-3 standard That also points to a decoder liba52 which was last updated in 2002. Can anyone offer better suggestions on a place to start?