Posts Tagged reduce spl
Industrial facilities include a wide range of applications like manufacturing, processing plants, construction sites and more. The typical sound problem in most industrial applications is the need to lower the overall level of sound or lower the decibel level of specific machinery. Machinery can include punch presses, printing equipment, crushers, grinders, air tools, drills, jack hammers, pumps, etc. The noise generated by these machines not only fatigue operators but may not meet OSHA safety requirements or other local noise ordinances.
To lower the sound level of these machines, the best course of action is to create a sound proof enclosure around the source of the noise. This will eliminate noise and prevent sound from permeating into the rest of the facility or neighboring areas. There are many ways to accomplish this, however, most methods will require some type of massive and/or dense material and possibly the addition of a fluffy absorptive material.
To create sound proof enclosures, you may wish to consider using a combination of the following materials:
BlockAid Sound Barrier is a mass loaded vinyl used in composite structures to add mass and aid to increase the STC (Sound Transmission Loss) of a system. This material weighs one pound per square foot, ships on rolls and can be easily cut with a utility knife.
Alternatively, like in the image at the top of the page, a machine or enclosure can be lined with a composite foam. This material has a layer of the vinyl sound barrier floating between two layers of acoustical foam. This material combines a layer of massive/dense material (vinyl sound barrier) to block sound with two layers of absorptive acoustical foam. Suspending the barrier as a limp mass between the two layers of acoustical foam decouple it from the existing surface of the enclosure, improving its effectiveness.
In addition, StratiQuilt Blankets can be installed on-site around machinery to reduce the mechanical noises. These quilted fiberglass blankets can be manufactured with or without a barrier septum and available with grommets for hanging. Optional outdoor coverings can be quoted when the material requires UV protection.
Subsequently, Cloudscape ceiling baffles can be installed in large open areas and metal buildings with engineered truss systems to reduce overall reverberation and sound pressure levels (SPL) within the room.
Acoustics First Corporation supplies acoustical panels and soundproofing materials to control sound and eliminate noise in commercial, residential, government, institutional applications worldwide. Products include the patented Art Diffusor®, sound absorbers, noise barriers, acoustical fabrics and accessories. Acoustics First® products are sold for O.E.M applications, direct, and through dealers. For more information on acoustical materials and their application, please visit www.AcousticsFirst.com or call Toll Free 1-888-765-2900 (US & Canada).