I am not about to compose a post vilifying the American industrial complex; I’m only expressing the attitude of many people that I come across who live near a noisy factory, processing plant, scrap yard, or other type of industrial facility.  Perhaps in some cases, criticism by nearby residents is justified, but usually it is not, and often it is avoidable.  Multiple times every year I am called in to assess industrial noise and vibration emissions to residential communities.  Often I am hired by the company, sometimes by the local government, and occasionally by a residential group. And by the time I get involved, edgy relations have frequently devolved into contentious confrontations, accusations of purposeful illegalities, and claims of ill health due to noise. (more)

Recently we were called in to consult on some highway noise that was affecting a residential community. The state had added a new exit ramp that diverged right through the back property lines of several of the residences. While we talked with one of the home owners, he asked about the acoustical effects of planting more trees and foliage between his house and the new exit ramp. As Acoustical Consultants, this is something we hear all the time: the idea that trees and plants can effectively mitigate loud noise. Hopefully, this blog will help put to rest some of the myths about acoustical attributes of trees: where they fail and where they succeed. (more)

Urban legends claim that a good way to calm your nerves before giving a speech is to imagine the audience in their underwear. But what if you could attend class in a T-shirt and underwear without anyone else ever knowing it? Well, at many colleges and universities around the world, you already can.

To understand this miracle of science, we have to examine the link between two rapidly changing technologies: distance learning and classroom connectivity. These two might seem unrelated, but in fact they are deeply intertwined. (more)

In the “old days” of trial litigation, lawyers were expected to present their arguments and evidence through one of several basic modes of communication: namely the spoken word, the written word, and physical evidence. And the best evidence always seemed to be an eye-witness account or a “smoking gun,” as it were. But as we learned in the 1990s, sometimes even the best of leather gloves won’t seem to fit. (more)

In a former life I worked for a very large engineering company with over 1,000 engineers working in an open plan office, everyone working on one floor. We lovingly referred to our floor as the “cube farm”. One day I arrived at the office just as the lunch crowd was making their mass exodus. Although I was frustrated by my inability to enter the building, I couldn’t help but think of the old “how many college kids can fit into a VW Beetle” gag as I waited for the never-ending trail of people to exit the building.

It shouldn’t be a surprise that most companies are decreasing the amount of working space allotted for individual employees. (more)

Mixing noise pollution with an intimate auditorium setting is almost always a bad idea, and as the song says, “You gotta keep em’ separated.” There’s nothing like untimely noise pollution to ruin the flow of a good theatrical performance or vocal recital. For our purposes today, we will define “noise pollution” as any unwanted sound impeding at an unwanted time. When you’re engineering acoustical solutions for an auditorium, the importance of noise isolation is paramount, and it’s the only way to really keep the “bad sound” out. Noise pollution can hinder speech intelligibility and greatly reduce the ability for an audience to hear and understand what is being said. In auditoriums, noise pollution can come from a wide array of culprits from within or without the facility. (more)

The challenge with contemporary church architecture is that the term “contemporary” means a lot of different things to a lot of different people. For some, it means a praise band and a projector. For others, it means the service is full of drama, dance, video, interactive preaching, and more. With all the different styles, a lot of contemporary churches feel stuck in the middle with facilities that are in between “where it is” and “where it ought to be.” (more)

Unfortunately, sometimes it’s the walls, the floor, or the ceiling. It seems like every hospital I’ve visited in the last five years is under construction, renovating their current space or planning for large additions. With all the changes, it’s easy to forget about the “unseen” aspects of the design, such as Mechanical Noise and Vibration Control.

A common problem is loud mechanical units going in over operating suites. Vibration and noise from the mechanical units can cause problems with the medical equipment inside the suite. Too much noise and vibration can ultimately compromise the accuracy of the equipment. This can lead to misinterpretation of medical data and serious health issues. Operating suites are also very active places with lots of health caregivers interacting with each other. Excessive noise levels in the operating room can cause communication issues at a critical moment in time. (more)

When most people hear about the new Acoustic Standards in the LEED for Schools Rating System, their eyes start to glaze over like day-old Crispy Creams. With over thirty pages of detailed acoustical design criteria, the ANSI Standards are a force to be reckoned with. Today we will take a few moments to highlight the basic principles of acoustical design that will “LEED” to enhanced learning environments, happy school board officials, and of course…impressive LEED scores. (more)