What are the Methods used in cinemas to prevent echo?

Cinemas use various methods to prevent echo, including soundproofing materials like acoustic panels, carpets, and curtains that absorb sound. The design of the theater itself often incorporates curved surfaces and strategically placed sound diffusers to minimize reflections. Additionally, proper speaker placement and calibration help ensure that sound reaches the audience without bouncing off walls. These techniques collectively enhance the overall audio experience by maintaining clarity and reducing unwanted reverberations.