I recently watched “Outer Range” on Prime. Although it says on the banner than it has Dolby Atmos, for some reason it wasn’t showing Atmos on my Sonos App. It was showing PCM. When I turned off the Atmos on my Apple TV, the sound badge changed to Dolby MAT 5.1. I’d never seen that before and I haven’t been able to find much about it. Is that an Atmos codec? I usually get PCM 5.1, Dobly Digital, or Dolby Digital Surround if not Atmos. Anyone know about Dolby MAT?
Question
Dolby MAT
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It's a PCM-Channel, containing Metadata for Dolby Atmos. That's why Dolby Metadata-enhanced Audio Transmission is called Dolby MAT. It uses a lot bandwidth with no advantage to Dolby Atmos or Dolby Digital 5.1 format. So if you have Dolby MAT displayed, you may change your audio settings to get a higher audio format.
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