ref: 1827764450def2970b1866f10d0c359e6d118069
parent: 4d38dbdfb597902528dc72cbe6d87ffe30574dd9
author: Marco <marpan@google.com>
date: Wed Nov 11 13:05:11 EST 2015
Adjust varianace threshold for high noise condition. Change-Id: I91c722e480328ff95b8c57614d8176ccaceb2539