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</head><body text="#000000">Ah, no..... the NX plug-in is inserted on
the Surround master buss (5.1, 7.1, ambi, etc) The plug-in does the
math to convert the multi channel mix directly into a 3D binaural
mix. Headtracking uses the tracking info from whatever sensor
(camera, bluetooth tracker, or built into the Apple headphones or other
device) and then magically rotates the binaural mix to match the sensor
movement. All of the position (pan, depth, height) data is baked into
the binaural mix. It is never a traditional "panned mono" stereo mix,
which is what I think you mean by "positioned stereo". <br>
<br>
My understanding is that Apple has built in the multi-channel conversion
to binaural into their primary playback apps, so if you play a movie
with a 5.1 surround track on your Airpods Max, the 5.1 is converted to
binaural in the app and the binaural signal is sent to the Airpods.<br>
<br>
In addition to head tracking, the coolest thing about this is the
ability to adjust the magic to your own head. One of the long term
issues with binaural has been that most folks do not have the exact head
size as the dummy head, so the recordings sound a bit different to each
listener. Now you can put your own measurements into the head tracking
app, or your Airpod Max settings. With that additional data, the
binaural mix is magically adjusted so that the 3D placements and sound
are much more consistant among listeners. The NX app also includes
custom curves for popular headphones, which again helps in producing
consistant results that hold up across devices. <br>
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<span>cheater cheater wrote on 4/17/21 3:04 PM:</span><br>
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cite="mid:CAGn5V-_F=nJsXO=bz_aaaOr6Tq-d5Zy2pMJZQ8Yo+s-pvTvMtg@mail.gmail.com">
<pre wrap="">>From what you wrote, please correct me if I'm wrong, you downmix 5.1
to normal stereo, and then convert this stereo to head tracked stereo.
(that's what I mean by "positioned stereo": it's not normal stereo as
defined in standard use, it's positioned in 3D depending on the
position of the earphones)
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