@jeremycherfas ECM-50s (or similar) placed close to your ears would certainly create some kind of binaural effect and would give much more of a 3D experience than traditional stereo techniques but probably not as good as an actual dummy head, or in ear microphones. (Like these, for instance: www.thomann.de/se/sennhe...) Even something like an ORTF placement (https://en.wikipedia.org/wiki/ORTFstereotechnique) gives more of a 3D experience than something like a traditional spaced pair or X/Y stereo. My advice is if you have two ECM-50s, try it!
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