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Missing Tones

Aspiring Pro
Posts: 844
Thanks: 54
Registered: ‎13-10-2012

Missing Tones

I have attached an image of my bitloading graph.
There is a large chunk of upstream tones missing (from about 2030 to 2800). What I don't understand is that there are useable downstream tones above that (2800 to 3100) which are at a higher frequency. Given the approximate shape of the graph, where the y-axis decreases with frequency (as expected), I would have thought there would be more useable tones in that missing chunk, given there are useable tones at a higher frequency.
Does anyone have any idea of why that would be?
Does anyone else have a similar bitloading graph with chunks missing?
Just curious.
Posts: 44
Registered: ‎02-05-2013

Re: Missing Tones

This is my graph but I can't help with the technical side.