In a setting which requires a significant and drastic change in decibel level, AmCraft provides sound barrier curtain panels that contain the noise effectively.
Sound barrier curtains are used for a variety of different purposes, from meeting compliance regulations to simply reducing the noise interference. The purpose for the noise reduction is always the same: make the surround areas less hazardous and more comfortable for workers.
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Sound Barrier Curtain Wall Panels
Curtain Acoustics & Noise Reduction
Decibel = Measurement of sound intensity (dB). In correlation to frequency, decibels are needed to determine level of sound attenuation needed for an acoustic sound divider project.
Transmission Loss = The original sound decibel level minus the resulting sound transmission [decibel level] on the other side of the acoustic curtain wall. Abbreviation is TL.
- Impeceptible Change 1dB
- Barely Perceptible Change 3dB
- Clearly Noticeable Change 5dB
- About Twice as Loud / Soft 10dB
- About Four Times as Loud / Soft 20dB
Curtain materials for effective sound control
Since low frequency sound, such as heavy machinery, can sometimes be felt as a vibration, anti-vibration pads under the machine mounting points should be a consideration.
Our noise reducing barrier curtains are available in 2”. The table above indicates the transmission loss (TL) in decibels (dB) for each given frequency (hz). The frequencies details in the table are based off of a 1/3-octave band.
Octave Bands are the frequency division sets that cover a certain set of frequencies. When the upper band frequency limit is twice the lower band frequency limit, the frequency is said to be an “octave” in width.
One-third Octave Bands are exactly as they state – 1/3 of an octave band. This divides the frequency range within an octave band into 3 equal subsets, making it easier to distinguish what frequency a noise/sound will fall into.
To explain octave bands and one-third octave bands can also be illustrated as follows:
On octave on a piano is from C to the next C.
Octave Band = C, C#, D, D#, E, F, F#, G, G#, A, A#, B
There are 12 [black and white] keys that comprise an octave on a piano.
1/3 Octave Band = C, C#, D, D#
A semitone describes two keys directly next to each other. One-third of the octave (12 keys) would be 4 semitones.
Sound Transmission Class (STC)
A low STC rating for a material indicates that the material will allow a greater amount of sound to pass through into the adjacent work area. A high STC rating for a material means that the material will reduce the amount of sound passing through from one area to another. Depending on what your requirements for each of the workspaces, AmCraft can provide you with a customized sound control curtain panels to suite your project needs.
It is important to keep in mind that the STC rating of a material may not affect the reverberation or sound reflections within an area. Using an acoustic baffle system in addition to your noise barrier curtains will help to control all aspects of your sound source.
Our noise control curtain panels can drastically reduce the harmful transmission from your sound source to create a more comfortable environment for your personnel. As a cost-efficient solution for your sound reduction needs, our sound barrier wall panels, curtains, and sound-reducing dividers can also help your facility meet OSHA standards.
Our technical specialists have the expertise to help you with your current or upcoming project. Give us a call today for assistance!