NEU Faculty of Engineering
Department of Civil Engineering
New Technologies for Noise Control in buildings
Term Paper by Ellen Adu-Parkoh
20133164
May 12, 2014
CHAPTER ONE
INTRODUCTION
Noise is defined as sound unwanted by one or more individuals even though it may be wanted by someone else. It can be a significant nuisance in buildings and domestic dwellings are particularly vunerable to noise emitted from properties and the vicinity. [Ref 1]
Noise nuisance in buildings causes annoyance and can sometimes have adverse health effects on people. It causes disturbance to sleep and rest and hence the need for noise control in buildings. The helpless feeling of something of great value- the quality of the environment, the right to quiet enjoyment of homes, and the value of residential properties has been taken away by noise nuisance even though there are regulations (minimum requirements) in building codes and construction standards that addresses noise control in buildings. [Ref 2].
Noise pollution has become more prevalent issue therefore more effective forms of noise control within buildings are required to satisfy the quality of life for the population. Original methods of noise control were inexpensive,non-technical and highly ineffective. There are two main approaches to noise control; source control and path control.
This paper is limited to noise nuisance in domestic dwellings and not industrial noise control and the aim is to identify the new technologies for noise control in buildings and how they effectively work to control noise in buildings .
CHAPTER TWO
NEW TECHNOLOGIES FOR NOISE CONTROL
2,1 Definition of Noise and its Properties
Since it was said previously that noise is unwanted sound, knowing the prop...
... middle of paper ...
...l in buildings are effective but can be quite expensive and moreover, architects and building contractors prefer the old methods since they are cheaper.More education on these new noise control technologies has to be carried out so as to effectively control noise in buildings.
References
1) Colin Hansen, 2005. Noise Control- from concept to Application . New York
2) Theodore J. Schultz. Noise Pollution, p 387- p 425
3) Mendel Kleiner. Electroacoustics, p 11 - p 15
4) April Isaacs 2005. Characteristics and behaviour of waves, understanding sound and electromagnetics.
5) M.W. Simons, J.R. Waters. Sound Control in Buildings, p 21- p 23
6) CertainTeed - Saint Gobain. Noise Control for Buildings, Guidelines for Acoustical Problem Solving
7) Cowan J. 1994. The handbook of Environmental Acoustics, New York
8) Shafer R.M. 1998. The Book of Noise. Indian River, Ontario.
Further, a public nuisance under CA Civil Code §3480 is a nuisance that affects simultaneously a considerable number of persons (i.e. community or neighborhood). A private nuisance under CA Civil Code 3481 is a nuisance not defined as a public nuisance.
noise – indeed, one must “go” to silence him, suggesting distance between him and the
This may happen unconsciously, as is usually the case with soft background noise such as the whoosh of air through heating ducts or the distant murmur of an electric clothes dryer. Sometimes hearing is done semi-consciously; for instance, the roar of a piece of construction equipment might momentarily draw one's attention. Conscious hearing, or listening, involves a nearly full degree of mental concentration. A familiar instance in which listening takes place would be a casual conversation with a friend or colleague. In such cases, the sound waves entering the ear are transferred to the brain, which then
Many people use spray foam insulation to decrease energy costs in homes and commercial buildings. Adding or increasing the insulation in an existing structure can save hundreds of dollars a year in heating and air conditioning bills. Another reason to insulate that is not often considered is to control noise. Insulation in the walls and ceiling can act as a muffler or sound barrier to noise produced by heating and air conditioning units, phones, piping, appliances and radios. A quieter workplace is much nicer to work in than a noisy one. Studies show that quiet conditions increase a worker's efficiency.
1. Hearing Problems: Any unwanted sound that our ears have not been built to filter can cause problems within the body. Our ears can take in a certain range of sounds without getting damaged. Man made noises such as jackhammers, horns, machinery, airplanes and even vehicles can be too loud for our hearing range. It also reduces our sensitivity to sounds that our ears pick up unconsciously to regulate our body’s rhythm.
For most careers, sound is used as a medium for communicating thoughts, ideas, and important information. For this very reason, it is unlikely that you would ever see an office space with tall ceilings and hardwood floor—as people would be unable to clearly communicate with each other due to the echoic effects of the architectural structure. Instead, office spaces have relatively low ceilings and carpeted floor to reduce the number of reflections from a sound source. This allows our voices to be heard clearly for the intended audience—whether a cubicle neighbor, or a group of people in a conference room. However, a large number of industrial workplaces produce sound pollution as a result of machinery. For these particular environments, sound absorption and isolation techniques are used to reduce noise pollution and create safer aural environments for employees. With this concept of utilizing sound and disposing sound, we can take a closer look at a career in music production—a job that meticulously considers every aspect of sound. While the engineers that produce ‘billboard albums’ rely greatly on their choice of equipment and their ears, the environment in which they record, mix and master plays a tremendous role in the clarity and the overall soundscape.
Exton, Peter, “The Room Acoustics of the Guangzhou Opera house”, Harold Marshall Group Consultant 2010, Marshall Day Acoustics
Where to Find Audio Production Scholarships Entering a career in audio production may be your dream job, but perusing the audio production field is far less complicated when you have a degree to back it up. Finding a scholarship program to help you accomplish that dream doesn’t have to be as complicated as it seems. Scholarships are widely available to those who are looking to further their education, you just have to know where to look and take the time to apply to as many as you can. Getting your name out there and taking advantage of many different scholarship opportunities will increase your chances of being awarded an audio production scholarship. 1.) Go Directly to the source
Lentricchia, Frank. “Introduction.” New Essays on White Noise. New York: Cambridge University Press, 1991. pp. 5-21.
...elopment of Noise Setbacks for Wind Farms – Requirements for Compliance with MOE Noise Limits. Ministry of the Environment Available online: http://www.ene.gov.on.ca/stdprodconsume/groups/lr/@ene/@resources/documents/resource/stdprod_080767.pdf
An example for this definition would be some police officers killing black men for little to no purpose and citizens riot because of it such as the Baltimore riots. While one will believe the actions of the police officers would change after riots, they most likely will continue. Part of the issue with some of the white noise is the media. The media only depicted the hostile results of major issue in an environment. One theme that is apparent in white noise is the role of television in society’s, particularly media outlets.
Not only that but demand for energy saving is increasing rapidly in all industries and industrial applications and even in home appliances such as microwaves, refrigerators, air conditioners, power tools, vacuum cleaners and washing machines. A number of different parts which are used in a number of different ways can be found inside a machine. But the main goal is to have each part working correctly, cohesively and safely. If a machine is off balance or is vibrating more than it should, not only could it cause damage to the parts inside of it but also to the floor that it is sitting on. Reducing machine vibration reduces the damages that can be seen in the machines and the surrounding area while maximizing the working
the Effect of Urban Noise on the Active Space of Avian Vocal Signals. It explains how
Despite the fact that novel technologies are continuously under development to complement existing practices in coming up with greener buildings, the universal intent is that such structures are designed to diminish the general effect on the built environment on health of the humans in addition to the natural environment via: Diminishing environmental degradation, pollution and waste, improving productivity of the employee and guarding occupant health, efficient usage of water, energy, in addition to other resources.
Finally, the other thing that makes my neighbors mean, besides being unfriendly and dirty, is that they are very noisy. They have three children and the smallest, the baby, is the one that makes all the noise during the day. He is always crying because he is hungry or because he wants something. Why do not his parents try to lull him? Besides the baby, they also have one big dog that barks all the time. For example, the other day I was going to study, but then it began to bark, and thanks to its harmful noise, I could not concentrate on what I was doing.