http://bitcoincharts.com/charts/bitstampUSD#tgTzm1g10zm2g25z...
Chaikin Volatility goes down imho. I do not really know what the others mean. Are they adjusted for volume?
I don't think it actually goes down. Look at Jan 12 to Jan 13. Then look at Jan 13 to Jan 14. There is definitely a lot more volatility during the second period.
The others largely measure average price spread using slightly different means from each other.
(Tried Chaikin Volatility, Donchian Channel, ATR, and Bollinger Band)