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[Help] Detect whether 2.0 Audio is Dual Mono or Stereo
#1
Music 
2.0 Stereo Mix. Both L & R channel will contain different information & it will be discreet enough. For example - Dialouge, environmental sound. If the spectrogram of L & R channel is 1:1, I conclude it's a Dual Mono audio. That's my understanding so far.

But if it's not 1:1 & I couldn't hear any differance in the not identical part of L & R channels, then I am not sure? Specially if the BD advertises as a Mono 2.0 & the Spectro is not identical.
Here is an example - https://slow.pics/c/Y3vp9qJc . Here is an example of spectro of an Audio advertsied as Stereo Mix - https://slow.pics/c/iTilfeLX

Please correct me if my understanding is wrong & how you guys detect whether it's a Dual Mono or actual stereo. Thanks.
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#2
just invert the left channel and mix both channels together. if there's nothing left (or very little left) it's mono.

you can also use bronan's app:
https://fanrestore.com/thread-2686.html
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Thanks given by: GjRedo , xwmario , Doctor M
#3
I just play it through my home theater system with DPLII turned on. If it only comes out of the center speaker, it's 2.0 mono.
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