To me, this analysis sounds more about the interference with physical objects (like how 2.4ghz can pass through walls easier than 5ghz). It doesn't seem to be a

To me, this analysis sounds more about the interference with physical objects (like how 2.4ghz can pass through walls easier than 5ghz). It doesn't seem to be about interference with other radio emissions? > 30hz to 230hz is much easier to tell the difference than 15khz to 15.2khz if you want to listen to audio tones That's definitely true for humans, but I don't think it necessarily applies to radio signals in general (though it does make sense at first glance).