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.

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.

It is for this reason that these noise control devices require proper engineering to balance the required noise reduction against the allowable pressure drop within the system.  More extreme and critical applications, such as gas turbines, high temperatures/velocities/mass flow; airstream particulate and such require commensurately appropriate extreme engineering and manufacturing capabilities.

Such is also the case with vent and blowdown silencers*.  These particular noise reduction devices are inherently pressure vessels, and must be precisely designed and manufactured to withstand extreme conditions.  The attention to detail and quality for critical internal components cannot be overlooked, since safety must always be the primary consideration when designing for these extreme conditions.

While specializing in extreme noise control engineering and systems, dB Noise Reduction is your source for all environmental, industrial, architectural and vibration isolation noise control systems.  dB Noise Reduction even has acoustic barrier and noise control enclosure panels up to 24’ long in a single span – the longest in the industry; offering superior labor savings and a monolithic appearance.

Please visit our website, or contact for assistance with selecting the appropriate silencer or noise control system for your application.

Richard Anthony

*Source:  “A Practical Guide to the Specification and Selection of Vent and Blowdown Silencers” John E. Praskey, dB Noise Reduction, presented at INCE Inter.Noise 2015