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Re:The volume is too damn high on flights by edsykes on Friday February 06, 2015 @11:25AM (#9009709)
definitely true on the inaccuracy.

however, in the absence of anything else it is an indication.

Re:The volume is too damn high on flights by Alupis on Friday February 06, 2015 @11:36AM (#9009777)
The only thing it's an indication of is the App feels the PA is louder than the other ambient noise in the cabin... which in order to be an effective PA, it must be.

The number it assigns it might as well of been made up... or put on some App-specific scale like 1-10, 10 being "we think this is really loud".