The walls of the concert hall are made uneven to allow sound to be reflected multiple times and not be transmitted to people's ears again, making the sound in the concert hall clearer. Friends who often go to concert halls to listen to music will find that the walls of the concert hall are uneven. Now you know the principle.

The spatial distance of the concert hall is large. When sound propagates in the theater, it will be reflected back when encountering the walls to form an echo. Because the theater is large, the time difference between the echo and the original sound entering the human ear will be greater than 0.1S. The human ear will distinguish it, which will cause the sound in the theater to be very noisy and make people unable to hear the original sound clearly, so the walls will be made uneven.

Sound waves will be reflected when they encounter hard, smooth, flat surfaces such as walls and doors, which is the same as light being reflected when it encounters a mirror. The reflection of sound is similar to the reflection of light. That is, when sound encounters an uneven reflecting surface, the sound will be scattered on the uneven reflecting surface, and the scattered sound waves cross each other, causing each other to consume energy, so that the scattered sound cannot reach the energy of the echo, which also weakens the sound. reflection effect.

The theaters and concert halls are surrounded by uneven, honeycomb-like walls, which can reduce the reflection of sound; when the sound reaches these walls, it is reflected in different directions or by multiple It is absorbed by secondary reflection, thus ensuring better hearing effect.