Even if the audience did not notice the detail, the actors would be aware of it.

After several scenes of the "play" have taken place, the audience can notice a more precise divide.

Just fire a few bullets, and hopefully the audience won't notice.

If the audience does notice the tense or "person," it is a barrier.

But, in fact, the audience doesn't notice it at all.

We spend a lot of time doing things so the audience won't notice it.

Not that our audience noticed, they were too carried away simply by being in the Presence.

The audience may often not notice the visual jokes in a single viewing.

For all that the audience noticed, he did not exist.