The way in which speakers emphasise words makes a difference to the way an audience receives and interprets the spoken word. The emphasis placed on words causes the listening audience to focus greater attention on the emphasised element.

‘Today is Wednesday ‘. Emphasis can be focussed.

Today is Wednesday.

Today is Wednesday.

Today is Wednesday.

The usage of intonation is a way to lead an audience. It is often not used and therefore remains under-appreciated.