Using only sound insulation cotton to create a silent room may not achieve the ideal sound insulation effect, because a standard test silent room has high acoustic requirements and needs to combine multiple methods and technologies; sound insulation and sound absorption are two different concepts, and they play different roles in sound control.
Sound absorption:
Material: Sound insulation cotton (also known as sound absorbing cotton) is mainly used to absorb sound wave energy and reduce indoor echo and reverberation time.
Function: Improve indoor sound clarity, suitable for recording studios, studios and other occasions that require clear recording.
Sound insulation:
Purpose: Prevent sound from passing from one space to another.
Material: Usually requires thicker and denser materials or structures, such as sound insulation boards, double wall systems, sealed doors and windows, etc.
Function: Reduce external noise interference and protect privacy.
In order to achieve a better silent effect, it is usually necessary to combine multiple methods and technologies:
1. Multi-layer structure: A combination of sound insulation barriers, air gaps and sound-absorbing materials.
2. Sealing treatment: Ensure the sealing of doors, windows and other openings to prevent sound leakage.
3. Suspended structures: such as floating floors and partitions to reduce solid-borne sounds (such as footsteps).
4. Heavy materials: Use heavy sound-insulating materials to increase the barrier capacity of the wall.
In summary, if your goal is only to reduce the echo in the room and improve the quality of recording, then using only sound-absorbing cotton may be effective. But if you need a truly silent room, that is, a space that can significantly isolate external noise and internal sound from leaking out, a more comprehensive design solution is required.