Here's why:
* Sound Transmission: Sound travels through vibrations in the air. Cardboard's structure doesn't effectively absorb or block these vibrations.
* Mass: A heavier material generally provides better sound insulation. Cardboard is lightweight, making it less effective at dampening sound.
* Air Gaps: Sound can travel through air. The spaces within the cardboard structure allow sound waves to easily pass through.
However, cardboard can be helpful in some scenarios:
* Combined with other materials: Combining cardboard with denser materials like foam or fiberglass can improve its sound-absorbing properties.
* Creating barriers: Thick layers of cardboard can act as a barrier, reflecting some sound waves and making the room sound a bit quieter.
* Temporary solutions: Cardboard can be a cost-effective and temporary solution for creating a basic sound barrier, like for soundproofing a rehearsal space or a temporary recording booth.
For more effective sound insulation, consider using materials like:
* Acoustic panels: These are designed specifically for sound absorption and are highly effective.
* Dense materials: Materials like drywall, concrete, or rockwool offer better sound insulation than cardboard.
In conclusion, cardboard alone isn't a great sound insulator. But, it can be useful in combination with other materials or as a temporary solution for basic sound barriers.
