I'd say yes.
The effect of the spell is a sort of bubble around the affected character, so the character would even hear himself speak. Other creatures around him/her would not, however.
I wonder how the Conjuration [Creation] spells, like most orbs, would act on the affected character... If it's anything like an AMF, i'd say the orbs created would go through the shield, as they're not magical and only created and launched by magic. Also, the shield itself isn't a physical barrier so it wouldn't act as an obstacle against the orbs, right?