Elsewhere @Quad grant me serenity was looking for test tones to check if his Oppo was correctly down mixing ATMOS, 7.1, 5.1, etc to 4.0. In the course of responding I discovered a brand new site, at least to me, full of Dolby, DTS, trailers, info, & test tones called DEMOLANDIA. I thought I would move info about this site more to the forefront as I think there's some great stuff there to read, fun trailers and test tones useful for checking set ups. Under the category of Surround Sound Tests there are 270 files. Subcategory Dolby there are 44 files including some of multiple ATMOS configurations. A QQ search for this web sites name turns up nothing. So, check it out.
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