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NOTE: dB Noise Reduction® Inc. has no legal affiliation with the Illinois-based company known as dB Noise Reduction LLC., against which we have issued a cease and desist order for misrepresented affiliation and unauthorized usage of the dB Noise Reduction® brand including the registered trademark, name, logo and any reference to the legal entity known as dB Noise Reduction® Inc.

dB Noise Reduction® Inc. welcomes all new customers, potential representatives and OEM accounts to use our easy customer interphase by emailing us at or calling (519) 651-3330. Our dedicated team is ready and willing to assist you with your inquiry.


International noise awareness dayNoise 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. Noise affects other living things as well – such as plants and animals. Extreme noise can even damage equipment and destroy structures.

For those people who have some form of hearing loss, it creates challenges and difficulties for them as well as their families. In children, diminished language and communications can result in lower academic achievement and fewer future job opportunities. Limited communications cause frustration, loneliness and isolation and is also now associated with the early onset of dementia and potential cognitive decline as we age.

Millions of people around the world live with the damaging effects of hearing loss. Globally the direct, indirect and societal costs are estimated to total more than $750 billion (in 2015 international dollars).

Although today we are learning to better manage hearing loss with technology, medical care, education and especially prevention, much of this advantage goes to developed, high-income countries.

As awareness increases about the societal costs and effects of Noise Induced Hearing Loss (NIHL), we are also learning about the importance of protecting our hearing and the need to reduce environmental noise pollution whenever and wherever possible.

dB NOISE REDUCTION® has many products, systems and solutions for reducing environmental noise. We protect hearing, equipment and the environment from the damaging effects of noise.

ARCACOUSTICS offers innovative architectural acoustic solutions, interior aesthetic treatments and even acoustic furniture to shape, control and balance acoustics, sound and noise levels within a space.

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.

Near Field is the area of the sound field that is closest to the sound (noise) source. At this part of the sound field, there is no simple relationship between sound (noise) level and distance. The sound pressure level may vary significantly with a small change in position.  At this region the sound pressure does not obey the inverse square law and the particle velocity is not in phase with the sound pressure.

Far Field is the area of the sound field that is distant from the sound (noise) source. In this region the sound pressure level obeys the inverse square law in which the sound pressure level decreases 6 dB with each doubling of distance from the source. In this region the sound particle velocity is in phase with the sound pressure. Within far field there are two additional fields: free field and reverberant field.

Free Field is a sound field region with no adjacent reflecting surfaces in which sound behaves as if in open air without any form of obstruction.

Reverberant Field is a sound field region in which the reflections from walls and other objects may be just as strong as the direct sound from the noise source.

dB Noise Reduction is an expert in the design and supply of noise control equipment including silencers and noise enclosures. We would be more than happy to discuss your specific application to try and help attenuate the noise for the health and safety of your workers.

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.

  1. Industrial Earplugs or noise cancelling headphones
  2. Quiet the noise source

Industrial Earplugs / Noise Cancelling Headphones

They are an acceptable method of reducing the noise exposure but are typically used temporarily to implement noise control solutions to the equipment producing the noise.

It is vital that the hearing protection fits properly and that they are worn at all times when being exposed to noise.

There are many options available but ultimately the choice is a personal one as long as it achieves the necessary NRR (noise reduction rating).

Noise Reduction at the Noise Source

Noise reduction at the noise source typically involves either adding a silencer to the equipment or creating an enclosure to absorb the noise and reduce the amount which reaches the workers in proximity.

The solution for noise reduction at the noise source greatly depends on the equipment/machine producing the noise, the application and the environment in which the noise source is located.

dB Noise Reduction is an expert in the design and supply of noise control equipment including silencers and noise enclosures. We would be more than happy to discuss your specific application to try and help attenuate the noise for the health and safety of your workers.

Acoustic Louvers

What is an acoustic louver?

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.

Acoustic Louvers are used for moderate noise attenuation on low velocity / large area buildings, enclosures and plenum openings.

They are composed of an outer metal shell with a perforated profile facing the noise source. The inside of the metal shell is filled with acoustic media to absorb the sound energy once it passes through the blade of the louver. They are designed to reduce noise while minimizing the ingress of water.


Louvers are well suited for applications where space is limited and the use of standard silencers is impractical.  They are able to fit in small areas due to their lack of depth but tend to be rather large in surface area. Acoustic Louvers are commonly used for building, enclosure, and room ventilation and HVAC systems.


Acoustic Louvers may come equipped with mounting flanges for surface mounting, galvanised and stainless steel mesh for bird, insect and safety screens or even chevron designs for greater noise attenuation.

dB Noise Reduction® offers a number of noise control solutions including acoustic louvers. For product details please visit our webpage on acoustic louvers or contact us through email at or call us using our toll free number 877-774-8601.


dB vs dBA

What is the difference between dB and dBA?

dB stands for decibel and is a unit of sound measurement. This unit measures the loudness of a sound or the strength of a signal, computed as the signal to noise ratio.

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.

In order to account for this, different weightings have been created to give a loudness measurement that takes into account how the human ear actually perceives sound. In North America, the most common of these weightings is the “A” weighting. Values that have been corrected using the “A” weighting system are shown using units of dBA. Values not corrected to account for human hearing are written using units of dB.

At dB Noise Reduction our focus is to select the best noise control solution for the application on every project we undertake, while keeping our customers’ cost to a minimum. Through our highly engineered noise control products we are able to reduce noise levels to create a quieter and more productive environment.


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.

Noise pollution takes place when there is excessive noise or unpleasant sounds that may harm human, animal, or plant life. The main sources of outdoor noise are machines, equipment and transportation systems such as trains, motor vehicles and aircraft. As civilization expands into what used to be forests and as cities are more and more populated it’s becoming harder to maintain noise levels at an acceptable level.

You might think, how much can high noise levels really affect us? Excessive noise not only causes psychological problems but it also affects our physical well-being and can over time make us sick. [See: What Runs the World? STRESS] For example, the noise produced from a chain saw can cause permanent hearing damage in just one hour, while the sound of a jackhammer causes IMMEDIATE physical damage. This is why hearing protection is essential when exposed to noisy equipment and precautions need to be taken to control noise sources from producing excessive noise.

Can plant life also be affected by high noise levels? Absolutely! Birds will flock from those areas with high noise levels preventing pollination from occurring and limiting the spread of seeds. The effect cascades into the entire ecosystem changing our planet’s natural balance.

It is extremely important to protect our planet from excessive noise. dB Noise Reduction has committed to the goal of reducing noise pollution in our planet through the use our extensive line of noise reduction products and our Nois-eNvelope line of Architectural Environmental Noise Barrier and Noise Enclosure systems. Through the use of these products we can tackle an aspect of pollution that is often dismissed or deemed unimportant. |

Acoustics, more than what meets the ear

What is the study of acoustic?
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.

Don’t assume when someone tells you they work in acoustics that they have a career in music, there are many fields within acoustics…some may even be of interest to you!

Acoustical Engineering
Acoustical Engineering is a branch of engineering which deals with sound and vibration. Typically acoustical engineers are concerned with noise control.

A career in Acoustical Engineering generally involves extensive knowledge in physics and mathematics and usually requires a bachelor’s degree in an engineering discipline.

Architectural Acoustics
Architectural Acoustics is a branch of Acoustic Engineering which focuses on achieving superior sound within a building, whether it’s through the enhancement of sound or the suppression of noise. An increased awareness of the importance of acoustical design is causing an expansion from its use in concert halls and recording studios into offices, factories, and learning and medical institutions.

Typically acoustic consultants help manage sound within an enclosed environment. A career in this field generally requires a degree in acoustics or physics. In addition, it is important to have knowledge of the environmental legislation and standards depending on the location.

Psychological and Physiological Acoustics
Psychoacoustics is the study of sound perception, the psychological and physiological responses associated with sound. This field strives to explain how we respond to sounds, such as music, and noise, such as construction noise. This helps designers select the appropriate sounds to achieve the feeling they desire in the space. This study of sound perception is exploited in film and music as it helps set the psychological response from the audience.

A career in psychoacoustics typically demands a degree with exposure to acoustics or psychoacoustics.

Underwater Acoustics
Underwater Acoustics is the study of the behaviour of sound in water. A common application of underwater acoustics is through the use of acoustic signals (systems) to guide underwater vessels, a valuable tool for both military and commercial use.

A career in Underwater Acoustics typically requires at least a degree in engineering or similar discipline. Experience in acoustic and software engineering would be an advantage when entering this field.

Noise Control
Noise Control is a field of Acoustical Engineering in which the objective is to suppress noise whether it is to meet environmental regulations or improve quality of life. Noise pollution is an increasing concern that has motivated the development of strategies for its reduction usually through the addition of a silencer or an enclosure encompassing the noise source.

A career in Noise Control involves a deep understanding of the behaviour of sound and the determination of solutions to environmental noise problems which requires considerable knowledge in acoustics.

Physical Acoustics
Physical Acoustics is a field of Acoustical Engineering which studies the way in which sound waves propagate in different mediums including solids, liquids, gases, and plasmas.

A career in Physical Acoustics generally revolves around research and typically requires an advanced degree in physics.

Structural Acoustics and Vibration
Structural Acoustics and Vibration is a branch of engineering of great concern to engineers. The main focus is that machines and structures need to be designed to withstand vibration as components can be damaged or structures can collapse under excessive vibration. Furthermore, excessive vibration can also be quite noisy.

In this field engineers have the task of either eliminating the possibility of vibration or isolating the vibrating equipment. A career in this field requires exceptional mathematical skills and ingenuity to arrive at useful insights that can be used in real world situations.

Musical Acoustics
Musical Acoustics is typically the field that comes to mind when thinking of acoustics. This field deals with the way in which musical sound is perceived and produced through the use of instruments, human voice, and computer generated sounds. A common application involves the use of sound for therapy to improve physical and mental health.

Those who work in the field of Musical Acoustics typically have an interest in both music and science and frequently have worked in the entertainment, education, or musical instrument industry.

Biomedical Acoustics
Biomedical Acoustics is the study of the interaction of ultrasound energy with biological tissues. This field has incredible applications in the diagnosis and treatment of diseased tissue.

A career in biomedical acoustics requires not only an interest in biology and medical science but also acoustics and physics.

A Career in Acoustics
There are many fields within Engineering Acoustics other than the ones outlined above, which simply scrape the surface of the field. Companies like, dB Noise Reduction, focus on the branches of engineering acoustics including Architectural, Noise Control and Vibration. Originally dBNR focused on the Industrial noise control industry but are rapidly expanding into the architectural field as well. Thanks to their experienced team of acoustical engineers they have developed into a strong company in the industry with acoustic designs to meet a variety of applications. From Industrial Silencers to Architectural Acoustics, dBNR is a leader in Acoustic Engineering.

dB Noise Reduction is continuously looking for new talent to join our innovative and hard working team. Whether you have a nick for sales development or have a passion for engineering design and solutions, dBNR offers excellent working conditions and encourages personal development.  Check our  Careers page often for our available positions ranging from full-time to co-op student positions.

November 11: Observing Veteran’s Day (USA) – Remembrance Day (Canada)

The following article was written by Richard Anthony, Director, dB Noise Reduction

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 (

He gave such a moving recount of his story – and gained the respect of every person in that room.  His true story is incredible and greater than anyone’s imagination could conceive; but what became difficult to believe was when he told of us the openly hostile and disrespectful treatment so many military people received when they arrived back home:  they were cursed at, spat upon, struck with fists and weapons and had things thrown at them.  It would seem that was a moment of great shame –  but for our society; not the veterans.

In 2015 it would seem that we have more reason than ever to appreciate and respect our military people and veterans.  They are a justifiably proud group of people and don’t want a hand out; but often there are ways that we can and should help out.  Start by thanking them for their service.  A few simple words, sincerely spoken can have a tremendous effect in someone’s day.  Buy a an active service person or a veteran their coffee at Starbucks, Tim Horton’s or D.D.  In the United States, organizations such as The Wounded Warrior Project ( and The Gary Sinise Foundation ( are other ways to help.

Veterans suffer higher than average hearing-loss

At dBNR, we have been looking to help through noise control and hearing conservation. Research indicates that active military personnel and veterans have a greater than normal risk for hearing loss and Tinnitus.  In fact, testing indicates that their risk is also much higher than even industrial hearing loss.

Noise Induced Hearing Loss (NIHL) can range from moderate to severe and affects this group more due to exposure to louder noise sources.  Since research also indicates a link between NIHL and broader health issues, this group is also at higher risk for other illnesses.  In simple terms, this means that their sacrifice continues long after their service ends.

This Veteran’s Day/Remembrance Day, stop for a moment to offer thanks, appreciation and respect for these brave souls – and especially join those who remain; in prayer for their safety, protection and that lasting peace may one day end all wars. 


The following article was written by Richard Anthony, Director, dB Noise Reduction

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”

If you haven’t yet heard about them, please let me introduce a great organization to you: the good people at the Hearing Health Foundation.   (  They want to remind us that October is also “NATIONAL PROTECT YOUR HEARING MONTH”.

These people perform a great service in publishing facts about noise and awareness about Tinnitus and the most damaging type of hearing loss:  Noise Induced Hearing Loss (NIHL).  They also inform us about new technologies and advancements in physics and medical research that point the way to one day being able to repair hearing damage – until then, NIHL remains irreversible BUT PREVENTABLE. 

For a perspective on the scale of today’s noise problem,  Hearing Loss (NIHL and Tinnitus) affects up 50 million people; 20% of teenagers (think: earbuds/headphones) and 60% of active military and veterans.  These statistics are for the USA only!   Adverse health effects from Hearing Loss are not limited to deafness – it can also contribute to cardiovascular and other physical and/or mental health conditions.

The prerequisite of prevention is AWARENESS.  When exposed to loud noise, The Hearing Health Foundation advises to Walk (literally, walk away – noise dissipates with distance), Block (use ear plugs and/or ear muffs; use noise barriers, or even put your hands over your ears in an urgent situation), Turn (turn down the volume; throttle-back machinery; adjust the direction of the noise source).  

 Please protect your hearing – for life.

 About dBNR:  dB Noise Reduction provides custom noise control, acoustic and vibration isolation solutions for any application.  Contact for assistance.