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Licensing is definitely strangling the market for Atmos decoders. If you have particular requirements you can always do it with ~$2k in Dolby software licenses and also ~$2k in converters. You cannot, unfortunately, DIY hardware for Atmos without an HDCP license. If you have one of those you can actually DIY something around a DSP like the ones Analog Devices sells preloaded with the IP. Then again if you have those kinds of resources you probably already work for Harman or something.


Gee, look what fell out of the back of a truck:

https://www.alibaba.com/product-detail/HDMI-1-4-Splitter-1-i...

$25 minimum order (for ten) + shipping and tariffs. No idea if these work, but they’re the top internet hit. The metadata says they do.


Yes but ADI won't even sell you the DSP I mentioned unless you produce your HDCP license.


Whenever I try to use these they don’t work with the latest hardware


Someone (Monoprice I think?) sells a box that downgrades HDCP; this is actually allowed in the HDCP agreement. Run the signal through that first.




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