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What is the name of the TV feature to locally downmix multi channel HDMI audio to 2ch audio ?
This thread has 5 replies. Displaying all posts.
Post 1 made on Saturday May 16, 2020 at 16:47
james_aa
Regular Member
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January 2018
172
Im planning an install where i have a 10x10 HDbaseT matrix.

8x of the TV zones are using the inbuilt TV 2ch speakers.

2x of the TV zones are multi channel audio zones.

All Video sources need to be available on all TVs.

I dont want to set every source to output 2ch audio over HDMI. So my 2ch TV speaker zones, need to be able to locally downmix multi channel audio.

In the past ive done this with signal managers (this can get expensive, its another box to provide power for and hide etc)

Ive also noticed that Samsung TVs from 2017 onwards seemed to have onboard multi channel audio to 2ch audio downmixing. Ive seen some Sony's do this to.

Is there a name for this feature, so that i can check if the TVs im specifying have it ?

At the moment im choosing between LG, Sony and Samsung, not sure if the feature is called different things, by different manufactures
Post 2 made on Sunday May 17, 2020 at 02:08
andrewinboulder
Senior Member
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August 2003
1,385
Wouldn’t that just be setting the TV output to PCM?
All the TVs I’ve worked with that have that.
Post 3 made on Wednesday May 20, 2020 at 13:06
BobL
Founding Member
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March 2002
1,237
A matrix switcher that does audio downmixing and possibly video scaling would be best. AVPro makes some of these switchers. They have an 8x8 and a 16x16 model.
Post 4 made on Wednesday May 20, 2020 at 18:33
Ernie Gilman
Yes, That Ernie!
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December 2001
29,511
On May 16, 2020 at 16:47, james_aa said...
Ive also noticed that Samsung TVs from 2017 onwards seemed to have onboard multi channel audio to 2ch audio downmixing. Ive seen some Sony's do this to.

Is there a name for this feature, so that i can check if the TVs im specifying have it ?

You'd think one of those Samsung TVs would have a name for it in their manual. Y might have to get three or four model numbers for each brand, and then go through the manuals to see. The Samsung service company has been pretty helpful, though, so maybe a phone call would suffice for their name.
A good answer is easier with a clear question giving the make and model of everything.
"The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
Post 5 made on Wednesday May 20, 2020 at 22:35
internetraver
Active Member
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April 2003
663
On May 20, 2020 at 13:06, BobL said...
A matrix switcher that does audio downmixing and possibly video scaling would be best. AVPro makes some of these switchers. They have an 8x8 and a 16x16 model.

It would be nice if downmixing audio didn't cost $5K, expecially if it's just dolby digital you're looking to convert.

The cheapest TV's in the world can do it.
Post 6 made on Thursday May 21, 2020 at 00:09
BobL
Founding Member
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March 2002
1,237
I agree and it might be a less expensive option to replace some of the TVs with ones that decode Dolby digital and use a less expensive switcher.


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