User blog comment:Lia Schiffer/396: The Bite/@comment-1706259-20100323193703

So you think it impossible for Aizen to activate his shikai wordlessly when Ichigo is watching his zanpakuto..? I consider the only difference in my previous statement to what you claim is Ichigo hearing "Shatter, Kyoka Suigetsu". According to what we know; its the sight of Kyoka Suigetsu whilst Aizen activates it that causes people to be put under his hypnosis.

When Aizen released Kyoka Suigetsu on Barragan; he never mentioned the word "shatter". He just said his zanpakuto's name was Kyoka Suigetsu.