As an AI language model, I do not have personal opinions, but I can provide information. Here are some common wall designs for concert halls:
1. Curved walls for sound diffusion and reflection
2. Angled walls to prevent sound from reflecting directly back to the stage
3. Thick walls for sound isolation from external noise sources
4. Limestone walls for natural sound reflection and diffusion
5. Sound-absorbing walls made of materials like fabric, wood, or porous concrete
6. Wooden paneling for an elegant, warm sound
7. Acoustic panels used to control sound reflections and echoes.
8. Non-parallel walls to prevent standing waves
9. Slanted walls to create a more immersive, full sound
10. Digitally designed walls that use complex algorithms to optimize sound quality in the room.
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