What kind of sound insulation material is better for hotel walls?

Using light steel keel as partition wall, filling 50mm rock wool board in the middle, sealing gypsum board outside, and adding a layer of sound-absorbing board, the sound-absorbing effect is better. Generally, the sound insulation method of partition wall or ceiling is the same. Usually 5cm keel (wood or light steel). The vacant position in the middle of the keel is filled with gradient sound-absorbing cotton with a thickness of 5cm, 1.3 kg/m2, and plasterboard is sealed outside. Generally, 5cm high-efficiency sound-absorbing cotton can meet the requirements, and gypsum board can generally isolate 20-30 decibels of noise. If you have special requirements, you can use two layers of gradient sound-absorbing cotton with a thickness of 5cm, and gypsum board can generally isolate 30-40 decibels of noise.