The strict rules meant it was forbidden for inmates to swear, disrespect officers, be lazy or careless, disobey orders or make unnecessary noise.

When lecturing, teachers should try to look at the student as much as possible and limit unnecessary noise in the classroom.

Steel rings on notepads, steel capped boots and steel springs in overall eyelets can all cause unnecessary noise in surveys.

Patients must not discuss their ailments or make unnecessary noise.

As long as the artist arrived on time, and did not disturb the proceedings by making unnecessary noise, their presence was rarely challenged in most jurisdictions.