Tag Archive: noise pollution

Is man-made noise making desert insects disappear?

Photo credit: Ferran Pestaña licensed under CC BY-SA 2.0

Veronique Greenwood, The Atlantic, writes about the gas compressors in the San Juan Basin of New Mexico and the effect they are having on desert insects. The San Juan Basin is “the nation’s second-largest natural gas field, [where] for miles in every direction, gas compressors are running more or less constantly, filling the desert with their eerie, broadband roar.” When compressors are near people, Greenwood reports, efforts are made to dampen the sound, but not so when the only thing that can hear them are the creatures that live in the desert.

What do the compressors sound like? Greenwood says that they “create a curiously oppressive noise, with both high and low frequencies at very high volume, running 24 hours a day, seven days a week, nearly 52 weeks a year.” Sounds hellish. And apparently desert insects agree, as ecologists have discovered that many insect groups are disturbed by the compressors “and by high decibel levels of noise in general.” How disturbed? Although some insects groups showed no change, “[t]here were 24-percent fewer grasshoppers in compressor plots, 52-percent fewer froghoppers, and a whopping 95-percent fewer cave, camel, and spider crickets.”

The long-term effects aren’t exactly known–one researcher noted that the study was “is just the very tip of the iceberg”–but as insects avoid the sound of man-made noise, their altered behavior will likely affect the bats and birds that eat them.

Click the link above to read the entire piece.

 

 

Study: Noise and air pollution adversely affect heart health

Photo credit: G.M. Briggs

CTV News reports that a new European study has found that exposure to excessive traffic noise is linked to a higher risk of heart disease. What makes this study particularly interesting, is that “[a]lthough air pollution has already been linked to an increased risk of heart disease, stroke, asthma, and risk of death, and noise pollution linked to raised blood pressure, disturbed sleep, and an increase in stress hormones, until now little research has been carried out on the effects of noise pollution and air pollution — which are often found together — on health.”

For purposes of the study, “noise pollution” was defined as “noise louder than conversation level — around 60 decibels (dB).”  To determine the effect of noise pollution on health, “the researchers tested the participants’ blood for a range of biological markers that could indicate heart disease…and blood sugar levels, which are linked to heart disease, diabetes and stroke at higher levels.” After taking into account lifestyle factors (age, sex, smoking habits, etc.), the researchers found “an increase of just 5dB in noise levels was linked to 0.3% higher blood sugar levels than those living in quieter neighborhoods.”

But the bad news about noise pollution doesn’t end there. The researchers “also believe noise could be increasing the risk of heart disease by causing long-term psychological stress due to lack of sleep and an increase in the production of stress hormones.”

The results should not be entirely surprising. Anna Hansell, one of the authors of the new study, was the lead author on a study linking noise to adverse health effects in BMJ in 2013, and a senior author on another study  linking road traffic noise and cardiovascular morbidity, in 2015.

Additional studies will follow, as the researchers intend to continue their efforts “to add to the limited body of research in this area.”

 

How can big cities deal with noise pollution?

Based on a recent increase in news items about noise in cities, the issues of urban soundscapes and noise pollution seem to be getting more attention. Included in this recent spate is an article by Robert Bright, The Huffington Post, who writes about smart, sound solutions to urban noise. Bright begins his article by noting that most people tend to think of noise pollution as “a cause of irritation and sometimes anger,” but fail to regard it as “doing us any physical harm.” But Bright shows that noise is more than a mere nuisance, as he discusses a recent study by Mimi Hearing Technologies which shows that people who live in noisy cities are more likely to suffer hearing loss, a not insignificant health problem. In fact, the World Health Organization estimates that the cost of hearing loss is $750 billion globally, which  includes medical bills, lost earnings, and related problems people suffer when they lose their hearing (but does not consider other effects of noise, like stress, fatigue, and poor sleep quality).

So, armed with the knowledge that urban noise pollution is a serious health threat, what can we do? Bright thinks that electric vehicles (EVs) will help to quiet the din, as they make very little noise. He also suggests that the ubiquity of smartphones coupled with free, downloadable sound meter apps will allow cities to compile noise maps that will allow users to avoid noisy areas and help city governments target noisier areas for sound mitigation. Other possibilities exist too, like the development of “radical new materials” that “could provide hitherto unimaginable forms of sound proofing in the future,” to ridiculous street furniture designs like the “Comfort-Shell,” “a giant helmet-shaped object positioned above the head which drastically reduces noise.”

The good news is that whatever method or products are used to address noise in the future, it is clear that noise can no longer be ignored. As Bright concludes, there is a marked “shift in approach to noise pollution” that “combined with citizen activism, increased EV usage and a more mindful attitude to how we are affected by the sounds around us…is putting city life on the cusp of a ‘quiet revolution.’”

 

National Parks: Why quiet matters

By David Sykes, Vice Chair, The Quiet Coalition

On May 4, Science and Phys.org™ published news reports about a recent, significant, multi-year study about the pervasiveness of noise pollution in 492 national parks and natural areas across the U.S.

In “Noise Pollution is invading even the most protected natural areas,” Science writer Ula Chrobak notes that:

The great outdoors is becoming a lot less peaceful. Noise pollution from humans has doubled sound levels in more than half of all protected areas in the United States—from local nature reserves to national parks—and it has made some places 10 times louder, according to a new study. And the cacophony isn’t just bad for animals using natural sounds to hunt and forage—it could also be detrimental to human health.

Under the study, researchers from the National Park Service and Colorado State University “recorded noise at 492 sites across the country with varying levels of protection, [and] used the recordings to predict noise throughout protected areas in the rest of the country.” They also estimated naturally occurring ambient noise and compared the noise levels with and without humanmade noise. The results were damning: noise pollution doubled sound levels in 63% of protected areas and caused a 10-fold increase in 21% of protected areas.

And the impacts of that noise pollution affect all living things withing these areas.  Phys.org reports interviews Rachel Buxton, the study’s lead author and post-doctoral researcher, who states that “[t]he noise levels we found can be harmful to visitor experiences in these areas, and can be harmful to human health, and to wildlife.” The noise pollution findings means that “noise reduced the area that natural sounds can be heard by 50 to 90 percent,” which “also means that what could be heard at 100 feet away could only be heard from 10 to 50 feet.”

So what is the impact on humans and wildlife?  Phys.org explains:

This reduced capacity to hear natural sound reduces the restorative properties of spending time in nature, such as mood enhancement and stress reduction, interfering with the enjoyment typically experienced by park visitors. Noise pollution also negatively impacts wildlife by distracting or scaring animals, and can result in changes in species composition.

High levels of noise pollution were also found in critical habitat for endangered species, namely in endangered plant and insect habitats. “Although plants can’t hear, many animals that disperse seeds or pollinate flowers can hear, and are known to be affected by noise, resulting in indirect impacts on plants,” said Buxton.

The study results have been widely reported, showing that there is real interest in protecting our national parks and natural areas.  Researchers know that “many people don’t really think of noise pollution as pollution,” but they hope that this study will encourage more people to “consider sound as a component of the natural environment.”

The National Park Service’s huge portfolio of parks and natural areas provides a huge canvas for researchers concerned about the impacts of “noise pollution.” You may be surprised to learn that the National Park Service has a research division called “Natural Sounds and Night Skies Division” that has been looking for several years at the effects of noise not only on visitor experiences, but also on plants and animals. Their work is fascinating and resulted in a 2014 report from the National Academy of Engineering called “Preserving National Park Soundscapes.

David Sykes chairs/co-chairs four national professional groups in acoustical science: The Acoustics Research Council, ANSI S12 WG44, The Rothschild Foundation Task Force on Acoustics, and the FGI Acoustics Working Group. He is also a board member of the American Tinnitus Association, co-founder of the Laboratory for Advanced Research in Acoustics (LARA) at Rensselaer Polytechnic Institute, lead author of “Sound & Vibration 2.0 (2012, Springer-Verlag), and a contributor to “Technology for a Quieter America” (2011, National Academy of Engineering). A graduate of the University of California/Berkeley with graduate degrees from Cornell University, he is a frequent organizer of and speaker at professional conferences in the U.S., Europe, Asia, and the Middle East.

Is it too late to save the orcas?

Wanyee Li, Toronto Metro, reports that researchers are concerned about the state of the health of the 78 remaining orcas of the Salish Sea orca population.  “The killer whales are declining for a variety of reasons ranging from infection, starvation, and conflict with large ships, both head-on and from the noise pollution they emit.”  Researchers say they know what to do to save these animals, but the problem is finding the political will to do it.

Kim Dun, an oceans specialist with  World Wildlife Fund Canada, said that “noise pollution is among the biggest threats to the whales,” because a “noisy environment that makes it harder for the whales to do what they need to do to survive.”  The combination of threats is enough “to choke the iconic animals until there are not enough whales to keep the population alive.”

In related news, recordings show that baby humpback whales and their mothers “whisper” just in case killer whales are nearby.  Ecologists studying the humpbacks say that this determination highlights the need to regulate ocean noise, because the discovery “suggests that human-produced machinery sounds could be particularly harmful to calves and their mothers.”

 

Please, god, no:

If you want a picture of the future, imagine every billboard screaming for your attention — forever

The sound of the Internet of Things (and why it matters for brands). Yes, yet another article about using sound for branding.  Apparently we aren’t spending enough money so branding gurus–or whatever they are calling themselves these days–are trying to figure out how to make their brands stand out from competing products and services through the use of sound.  And in an attempt to appear thoughtful as they invade public and private space with invasive sound, they write stuff like this:

Brands need to start creating a sound ecology that differentiates them whilst supporting their consumers. As we interact with a product, watch a commercial or experience a retail environment, it is only the brands of the future that have a fully considered, cohesive and familiar sonic identity that will stop us reaching for the mute button.

How about no?  We are already assaulted by layers of noise whenever we enter the public sphere, do we really need to have even more layers of competing sound added to our increasingly chaotic soundscape?  As if that’s not offensive enough, these branding fiends want to use sound for alerts for our now connected home appliances, leaving us not a moment of silence in our homes as our dishwashers and refrigerators beep and pop, competing for our attention. Because reasons!

At some point, if business refuses to show restraint, someone must step in to stop this anti-social behavior.  No matter how convenient it may be for some people to have their devices scream at them for attention, what of the innocent bystanders who are simply attempting to go from Point A to Point B?  Will no one think about our right to be left alone?

Link via @QuietMark.

Noise is a public health hazard and a hazard to your most important capital asset:

Nine sources of noise that will damage your house’s value.  Emmie Martin, Business Insider, writes about a recent study by Realtor.com that “calculated the price difference between homes within a certain radius of nine major noise factors — including airports, highways, and emergency rooms — and the median price of homes in the rest of that ZIP code.”  Click the link to see how noise effects house prices.  There isn’t much prose, but the slider makes it clear that noise matters when you are buying or selling your home.

 

A little self-help can’t hurt

In light of the recent study linking traffic noise to an increased risk of acquiring dementia, this article is a must read: How To Reduce Noise Pollution At Home.

Of course, one would hope that governments would think about how best to limit noise after reading that frightening study.  The medical costs alone should be enough to motivate even the most dispassionate bean counter.  But until they do, we really must take matters into our own hands and try to make our homes as peaceful and noise free as possible.

Link via @QuietMark.

 

God save us from the sound branders

Imagine all of this “sound branded.”

Because there isn’t enough noise in the world. Goldstein, a “music and sound consultancy with an outstanding track record in film, advertising, experiential marketing and sound branding,” writes about sound branding.  What is sound branding, you ask?  Goldstein explains:

There is a common misconception that the term Sound Branding refers only to the creation of ‘sonic logos’ or ‘sound signatures’. While these elements undoubtedly played a significant part in developing the field, it has expanded into something much richer and more valuable than a synonym for jingle-making. In its totality, it’s about the strategic curation of anything that can be usefully heard by a target audience – this could be a bespoke composition for an interactive product, the playlisting for a chain of hotels, or even an installation of generative sound art for a department store.

We would suggest a simpler–and more accurate–definition: the purposeful intrusion into an individual’s’ personal soundscape by someone trying to sell them something.  Adding that the idea of companies competing by employing sound branding could quickly spiral into hell on earth in public spaces.