Which of the following method will reduce noise more? Let's say you have a source of noise and you want to decrease the noise. Which of the following would be most effective, if at all? 1. Enclose the source of noise in a egg shelled like structure made of a soft material such as rubber or silicone. 2 Enclose the source of noise in a egg shelled like structure made of a harder material such as plastic or wood. Will there be any difference? Thanks Solid flat surfaces reflect the noise, doing little to quiet it. Surfaces with many small holes and cavities trap and dissipate the sound wave energy, and thus attenuate the noise. A soft material such as rubber or silicone that is a solid sheet might have a slight attenuation compared to a hard material, but the effect will be very small. The condition of having a textured, cavity-laden surface is what causes high attenuation. In theory, either soft or hard materials could be used to make that type of surface, but usually the practical  ...