What signal do most theatres give to indicate that the audience should take their seats?

The signal most commonly used in theatres to indicate that the audience should take their seats is a bell chiming. This traditional method is effective because it produces a clear and recognizable sound that can be heard throughout the venue, gently reminding patrons that the performance is about to begin. The sound of a bell is also universally understood as a cue to transition from one activity to another, making it an ideal choice for inviting the audience back to their seats.

While other options, such as flashing lights or video announcements, can also be utilized in some settings, they may not be as universally recognized or effective in garnering immediate attention. Live music can create an inviting atmosphere but is not typically used solely as a signal for seating. The chime of a bell stands out as the most traditional and widely accepted cue in theatre environments.