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us apart - Technical data and
specifications- Silencers
- Mufflers
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- Rectangular weather hoods & cowls
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- Filter boxes
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The sounding board
IMPORTANT NOTICE REGARDING MISREPRESENTATION OF OUR TRADEMARK IN THE U.S.A.
dB Noise Reduction® Inc. is sole owner of the registered trademark "dB Noise Reduction". This includes intellectual property, websites, electronic domain(s), social media, email, proprietary engineering & sales selection software programs, engineered drawings, manufacturing techniques, etc.
International Noise Awareness Day
Noise is unwanted sound. Noise doesn't have to be loud to affect us - even very low noise levels can be annoying and bothersome (like fingernails dragged down a chalkboard). But on the opposite end, exposure to extremely high noise levels can cause immediate deafness and even death. In between very loud and very soft noise levels, people experience a corresponding range of problematic physiological and psychological conditions.
Differentiation of Sound Fields (in Relation to Noise Reduction)
Near, far and free field are all sound fields which depend not only on the sound power level and directional characteristics of the sound (noise) source but also on the properties of the medium the sound waves encounter and whether they pass through it, get reflected or diffused from it, or become absorbed by it.
Hearing Protection at Factories
The most common problem and complaint from factory workers is excessive noise. There are typically large machinery and equipment with which they work with in addition to loud fans and vents in the area. Excessive noise does not just affect the worker's professional life but hearing damage is permanent and affects their personal life as well. There are a couple ways in which excessive noise can be reduced to a safe level for workers.
Acoustic Louvers
Acoustic Louvers are used for moderate noise attenuation on low velocity / large area buildings, enclosures and plenum openings. An acoustic louver is a shallow fixed blade air noise attenuator (a short, wide silencer). It typically has angled horizontal blades which assist in weather resistance and also in changing the direction of sound waves.
dB vs dBA
Although dB is commonly used when referring to measuring sound, humans do not hear all frequencies equally. For this reason, sound levels in the low frequency end of the spectrum are reduced as the human ear is less sensitive at low audio frequencies than at high audio frequencies.
Earth Day - A Spotlight On Noise Pollution
Earth day is a day dedicated to remembering the importance of keeping our planet healthy and clean. In commemoration of this day we typically make promises to help the environment or make a positive change in our community. Commonly, these promises involve increasing recycling, reducing waste, properly disposing of e-waste, swapping to energy efficient light bulbs, planting a tree, and/or being conscious about energy consumption. These are all very important goals to commit to but other - more challenging - objectives have gained additional attention.
Acoustics, more than what meets the ear
When the word "Acoustics" gets thrown around it is often perceived as concerning purely musical acoustics. Few associate the word with the physics involved regarding sound, in buildings or in an open environment, generated from everyday activities. The Merriam-Webster definition of Acoustics is the science that deals with the production, control, transmission, reception, and reflects of sound.
Observing Veteran's Day (USA) - Remembrance Day (Canada)
A few years ago I had the opportunity to hear a presentation from Sammy L. Davis, often referred to as 'the real Forrest Gump', who had been awarded the Congressional Medal of Honor for saving his brothers on the battlefield.
National Protect Your Hearing Month
One of my sisters is a health and wellness expert. She has stated for years that, "Sitting is the new smoking". Our Mother had died of lung cancer, so she was not trivializing smoking but instead pointing out that sitting TOO MUCH has a profoundly negative effect on human health. Since learning about the adverse effects of noise on human health, I have modified this phrase to make the point: "NOISE is the new smoking"
Extreme Silencer Applications
Silencers, Mufflers, Attenuators, Splitters, Baffles, Sound Traps - they are all similar but slightly different. In general, these noise reduction devices are designed to reduce noise (unwanted sound) from within an air intake system or exhaust system (which could be exhausting air or a gas other than air). Any such device that invades the airstream will invoke a pressure drop on the system, as it obstructs flow.
Why you really do need a professional Acoustical Consultant
A professional acoustical consultant can correctly analyze and solve noise problems - and avoid costly errors. Sound often does not behave the way the math, science and common sense suggest it should. These professionals understand the whole situation and how sound behaves; as well as the complex interactions that occur between different noise sources and conditions on site.
Updates to dB Noise Reduction's Silencer Selection Web App
Following the development of dB Noise Reduction's Silencer Selection Tool early this year, the team of experts have executed a number of updates to the web app to further improve the silencer selection process. This tool was designed to provide customers with the ability to quickly and easily select the proper silencer for their noise control requirements. dB Noise Reduction listened to their customers and have implemented their suggestions through a number of updates to make this tool more efficient and increase the user experience.
Silencer Selection Web App a new addition to the dB Noise Reduction website
We have added a new tool to our website that provides our customers with the ability to easily select the correct silencer for their noise control requirements. The silencer selection tool was designed to provide customers with a quick and easy process that will facilitate their silencer selection.
The dB Noise Reduction team announces the addition of two new members.
dB Noise Reduction is proud to announce the addition of two new members: Richard Anthony and Mehrzad Salkhordeh. Each possessing almost two decades of experience in the Noise Control Industry, both are well known and make a great addition to the team. Together, Richard and Mehrzad are expected to increase dBNR's market reach and further increase the sales of the company.
How does a fan silencer work?
Sound can be thought of like the ripples in a lake when you throw a stone into it creating ripples and the ripples travel outward in every direction. If you then took that lake and squeeze it into a canal those ripples would now be channeled to flow through the length of the canal. This is what's happening when you connect your ductwork to a fan. All the sound waves from the fan are now being channeled through the ductwork.
Noise reduction in mine ventilation system with turnkey solution
A nickel and copper mine ventilation system, which needed to be in operation twenty-four hours a day, seven days a week, was creating excessive noise problems for employees and nearby residents. Not only were noise violations an issue, the condition of the existing ventilation enclosure was a concern. Extensive clean up was needed, including the removal of hazardous material.
Stopping the noise pollution of self-cleaning filter systems
While self-cleaning filter systems are great for avoiding clogs and pressure loss in filtration systems, these pneumatic pulse cleaning systems can cause another problem - noise pollution. A recent example of this is the case of a foundry operation located within 100 feet of a residential area. Noise from a sixteen cartridge dust collector was causing a neighborhood disturbance during night time operation. The noise problem was exacerbated by the pneumatic pulsing of the filter cleaning cycle.
A sound approach to meeting expanding noise control needs
Demand for real estate has resulted in residential developments being pushed closer to industrial areas, thus, manufacturers must deal with environmental noise regulations. Maximum allowable noise levels for a plant are typically determined by the property line or the residences located closest to the plant. In order to address these issues, the first step is usually performing an evaluation that includes a thorough acoustical analysis. This diagnostic process will identify noise producing operations that exceed acceptable dBA levels.
Recent Posts
IMPORTANT NOTICE REGARDING MISREPRESENTATION OF OUR TRADEMARK IN THE U.S.A.
International Noise Awareness Day
Differentiation of Sound Fields (in Relation to Noise Reduction)
Hearing Protection at Factories
Earth Day - A Spotlight On Noise Pollution
Acoustics, more than what meets the ear
Observing Veteran's Day (USA) - Remembrance Day (Canada)
National Protect Your Hearing Month
Why you really do need a professional Acoustical Consultant
Updates to dB Noise Reduction's Silencer Selection Web App
Silencer Selection Web App a new addition to the dB Noise Reduction website
dB Noise Reduction team announces the addition of two new members
