"Multiplex Broadcast Sound"?
I recently got a soundbar and I'm somewhat confused about one of the settings. I'm a novice when it comes to anything A/V related as I'm sure you'll all be able to tell. Usually I'm able to figure things out with enough googling but I need help regarding "Multiplex Broadcast Sound".
In the settings for my soundbar under "Dual Mono" it states:
"You can enjoy multiplex broadcast sound when the system receives a Dolby Digital multiplex broadcast signal.
• “M/S”: Mixed sound of both the main and sub languages
will be output.
• “MAIN”: Sound of the main language will be output.
• “SUB”: Sound of the sub language will be output."
I found a post on Reddit in which someone said that some TV broadcasts offer a secondary language such as Spanish, and that the settings determine which language is output (Main being say English for example and the Sub language being Spanish). This seems bizarre to me as I can't imagine why anyone would want to hear two languages being output at the same time (by using M/S).
I was just going to select Main but then I found this description of Sound Multiplex in Broadcasting from Wikipedia:
"In broadcasting, sound multiplex is a method to deliver alternative audio feeds on television and radio channels. This way, a television or radio channel can carry surround sound (like stereo or 5.1 surround sound), or alternative audio programming where an audio track in different language, alternative sports commentary, or audio description for people with visual impairment can be heard."
I don't want to be losing any surround sound capabilities (virtual or otherwise) by selecting Main. That's probably not the case but I wanted to make sure by asking on AVSForum since people here seem to be very helpful and knowledgeable - so this is my first post!
Thanks in advance for any helpful explanations.