Common Noise Control Measures

Silencing

A device that prevents sound transmission while allowing airflow to pass through. This is the primary measure to prevent aerodynamic noise. Utilizing the resistive attenuation of sound-absorbing materials, the resistive nature created according to the principle of filtering, and the impedance composite designed based on the aforementioned two principles.

2. Acoustic Absorption

Acoustic materials are used to decorate the interior surfaces of workshops, such as walls and ceilings, or suspended acoustic bodies are hung inside the workshop to absorb radiated and reflected sound energy, thereby reducing noise intensity. Materials with good acoustic absorption properties include glass wool, slag wool, foam plastics, felt, cotton, aerated concrete, acoustic panels, and wood wool boards.

3. Vibration Isolation

To prevent vibration noise from spreading through solid materials such as floors and walls, vibration-dampening devices like rubber pads or asphalt are installed at the base of machines and their connections with floors and walls.

4. Soundproofing

In certain cases, sound sources can be enclosed using specific materials and equipment, isolating them from the surrounding environment, such as in soundproof enclosures or booths. The soundproof structure should be airtight to prevent resonance that could affect the soundproofing results.

Enhance Personal Protection

In situations where noise levels at the production site are currently unmanageable, or when work requires exposure to high noise conditions, the use of personal protective equipment is an effective measure to protect hearing. Earplugs are the most commonly used, offering sound insulation of about 30 decibels. Ear muffs and helmets provide better sound insulation than earplugs, but are less convenient to use and more costly, requiring improvement.