Audience swell refers to a sudden and significant increase in the number of people attending or viewing a particular event, performance, or media production. This term is often used in the entertainment industry, such as for concerts, movie premieres, or television shows, to describe a surge in audience size. It can also be used in a broader sense to describe a general rise in popularity or interest in a particular subject or topic. The term implies a positive and exciting atmosphere, as the audience swell creates a sense of anticipation and buzz around the event.