What type of materials are effective in reducing noise transmission?

Materials that are effective in reducing noise transmission include a variety of sound-absorbing and soundproofing products. Compressed foam is known for its ability to absorb sound waves, thus minimizing echoes and reducing noise infiltration in spaces. It is often used in acoustic panels and insulation.

Concrete walls provide a substantial barrier to sound, thanks to their dense structure. Heavy materials tend to reflect more sound than light ones, thereby enhancing noise control, especially in construction applications.

Carpeted floors also play a significant role in reducing noise transmission. The soft fibers of carpet can absorb sound, and the cushioning beneath it adds further sound-dampening qualities. This is especially effective in reducing impact noise, such as footsteps.

Since all these options—compressed foam, concrete walls, and carpeted floors—contribute to noise reduction by either absorbing sound or acting as barriers, it follows that collectively they are effective materials for decreasing noise transmission.