The ceilings of a concert hall are generally curved

The ceilings of concert halls and large auditoriums are generally curved to ensure that sound is reflected uniformly across the entire hall, reaching the audience effectively. According to acoustic principles, concave surfaces create local sound amplification by focusing reflections. While flat surfaces provide predictable reflections, curved surfaces are strategically used to control and optimize the distribution of sound waves to both the audience and performers. This design helps in diffusing sound and creating a more even sound field, preventing sound from getting lost in large volumes. By acting similarly to a concave mirror that reflects light to a focal point, the curved ceiling ensures that sound waves originating from the stage are directed downward toward the listeners, enhancing clarity and cohesion in the auditory atmosphere [1].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 9: Light – Reflection and Refraction > 9.2 SPHERICAL MIRRORS > p. 135