Within the volatility Band - a comment

Since now till next time, I will use Ninjatraders' script (ready formulas by Stocks & Commodities, in order to spare time (since advertising in this site gives me no so much money...) 
Now I've got a family...

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Well, the Volatility Bands of Vervoot is already something similar just seen, liked the hi-low channel.

Ninjatrader formula: http://www.traders.com/index.php?option=com_content&view=article&id=2430:ninjatrader-august-2013&catid=29&Itemid=137

But the Bands, unlike the hi/low channel:

• have no clear and immediate use (are so wide that there is not "signal") - points and levels of resistance are too weak
• have too much "noise": the graph if "full", deeply colored, but not sintethic of signal as we expect

This both in the basic setting (20 periods, 1 and 2 coefficient of margin volatility)

and using "fitting" parameters, like using the usual 11-periods and restricting volatilty parameters:

on Dax graph is very very similar to hi/low channel, but, as already said.....useless

Any source