Geometry.Net - Environment: Noise

Defra, UK - Environmental Protection - Noise And Nuisance
noise research list 2004/2005 (within the Environmental Protection Group research newsletter). Further information is available on our Help page about
http://www.defra.gov.uk/environment/noise/

Extractions: Skip navigation Home Contact Defra About Defra News ... Environmental Protection Environmental protection home page Noise and nuisance home page Neighbourhood Noise and Other Statutory Nuisance Ambient noise ... Contacts We develop and promote initiatives to address noise and other statutory nuisance and manages research into noise. The Noise and Nuisance policy team is responsible for: developing policy on neighbourhood noise (other than in the workplace) and other statutory nuisance (eg dust and smells/odours, bonfire nuisance). developing policy on ambient noise (including a proposed National Ambient Noise Strategy - NANS); negotiating proposals for European legislation on environmental noise and implementing the legislation once it comes into force; managing noise research including noise mapping, assessing current levels and attitudes to environmental noise, a series of joint projects with the Department of Health on Noise and Health, projects connected with the proposed EC Directive on Environmental Noise and the proposed Ambient Noise Strategy and projects in response to noise and other nuisance issues; disseminating information on how to avoid causing annoyance to others and what to do if you have problem.
Research Proposals Team 9
For the work environment, the International Institute of noise Control A program for the measurement of environmental noise in the community and its
http://www.xs4all.nl/~rigolett/ICBEN-team9/research.htm

Extractions: [2] U.S. Army Construction Engineering Research Laboratory, Champaign, Illinois 61826-9005 USA 1. Introduction 2. APPROACH TO Noise Policy Assessment (NPA) noise sources and their respective noise policies . The second (Survey B) would involve periodic noise measurements, combined with noise modeling predictions, to determine how noise exposure is varying over time. The third survey (Survey C) would determine the various objective and subjective effects of noise exposure for individuals, selected groups, and populations over time. The information obtained from these surveys would then be compiled and analyzed to determine what effects are observed from changes in noise policies. All three types of surveys need to be made every five to ten years to evaluate the effectiveness of existing noise Standards and regulations. They would provide the data required to accurately describe and compare various home, occupational, community, and recreational noise environments in different countries. The questions that need to be addressed include: Survey A - The basis for a NPA program would be a survey to catalogue the predominant noise sources and their relevant exposure regulations and policies (Survey A). Gottlob [6], in his comparison of international community noise regulations, and Lambert and Vallet [8], in a similar effort for the European Commission, provide examples of how this might be done. Most emission Standards (such as for automobiles and machinery) and architectural Standards (such as those for noise barriers) are covered by individual ISO and IEC Standards. However, there still remain noise policy differences both between and within individual countries which must be taken into account in implementing NPA programs. Nielsen and Sorensen [9] provide a comprehensive description of the relevant Standards development work of ISO TC 43 - Acoustics and TC43/SC1 Noise. Much of the information in these Standards can be incorporated into a NPA methodology.
EUROPA - Environment - Noise Policy
European Commission environment - EU noise. The Directive on environmental noise aimed at requiring competent authorities in Member States to produce
http://europa.eu.int/comm/environment/noise/home.htm

Extractions: en EUROPA European Commission Environment Policies ... Resources Further to its 1996 Green Paper (COM(96)540) , the European Commission developed a new framework for noise policy, based on shared responsibility between the EU, national and local level, and including measures to improve the accuracy and standardisation of data to help improve the coherency of different actions. This document lead to a comprehensive set of measures, including: The creation of a Noise Expert Network , whose mission is to assist the Commission in the development of its noise policy. The Directive on Environmental Noise aimed at requiring competent authorities in Member States to produce strategic noise maps on the basis of harmonised indicators, to inform the public about noise exposure and its effects, and to draw up action plans to address noise issues. The Directive on Equipment Used Outdoors that simplifies the legislation about many noisy equipments. The follow-up and development of existing EU legislation relating to sources of noise , such as motor vehicles, aircraft, railway rolling stock and the provision of financial support to different noise related studies and research projects In 1998, on the occasion of the Copenhagen conference, the European Commission created an EU noise Expert Network, whose mission was to provide assistance in the development of the European noise policy.
Frequently Asked Questions
You need to know the approximate noise level of the environment you are seeking protection against. The decibel (dB) level can be measured with a sound
http://www.elvex.com/FAQ.htm

Extractions: Home FAQ News Products ... Downloads FAQ - Hearing Protection and Noise FAQ - Eye Protection FAQ - Face Protection FAQ - Chainsaw Leg Protection What type of hearing protector do I need for my work environment or hobby? What are some typical noise levels of sounds and noises in our environment? How does exposure time affect my hearing protector requirements? What exposure limits are established for impact noise (such as gun fire)? ... What can I do if I already have an existing hearing damage? What type of hearing protector do I need for my work environment or hobby? You have to consider the following factors, the noise level, the exposure time, and the comfort and ease of use of the protective device. First, you have to select a hearing protector that has adequate attenuation for your work environment. Second, you have to consider how you are going to use the protector. You may for instance choose a different protector if your use is intermittent, requiring you to take on and off the protector frequently, than if you are going to work a continuous eight hour shift in a noisy environment. An earmuff may be preferable in the intermittent environment, while an earplug may be the choice in a long-term exposure. An earmuff may be preferred in a cold environment, while an earplug may be the choice in a hot and humid environment. However, there is no right or wrong choice, as long as you chose a hearing protector with adequate protection, and you use it correctly for the entire exposure time.
Voice Recognition & Biometrics Win32 PPC & Unix Multilingual Speech Recognition
Provides a highaccuracy, small foot-print and noise-robust speech recognition systems, ideal for command and control in noisy environments especially mobile and hand held devices.
http://www.neuvoice.com

Extractions: Home Products Support News ... About Did you know? We use ActiveX as the programmmers control interface, so wherever you use ActiveX, you can give your app ears... Get weekly headline news from your industry plus market and tech hints and tips - exclusively from Neuvoice. Enter your email address here: Call us today!
Environmental Noise Reduction Consultants Study
AAC is a specialized environmental noise reduction engineering acoustical consulting practice established to meet requirements in the areas of industrial,
http://allianceacoustical.com/services1/environmental-noise.htm

Extractions: NORTH HOLLYWOOD METROLINK STATION: AAC staff prepared noise and vibration monitoring plans and studies for the construction of the North Hollywood Metrolink Station. Metrorail construction created high vibration and noise levels that were intrusive upon the sensitive residential uses that bordered the project site. A vibration and noise monitoring program was created to measure and report vibration and noise levels at the nearest residential receptors to the project site. Weekly monitoring was performed to evaluate the measured vibration and noise. When needed, mitigation measures were recommended to reduce the amount of noise and vibration. A weekly report was prepared and submitted to the MTA for review. The development and execution of the monitoring and reporting program allowed construction to be completed on time and the interference onto the community to be minimized. WDI THIRD GATE: WDI has proposed to construct a new theme park and resort destination complex in Anaheim. The assessment project consisted of two phases with an interim use and an ultimate use. Key components of the project included several potential configurations of attractions, hotels, parking, entertainment venues, outdoor facilities, and mechanical support equipment. AAC staff prepared a constraints analysis study and environmental noise and vibration study to address the potential impact with such a large-scale project under different build-out scenarios. Where impacts were identified, mitigation measures were recommended to reduce and minimize impacts.
NPC Resources: Environmental Noise Booklet From Bruer & Kjaer
This booklet is an excellent primer on environmental noise how to understand it and fight it.
http://www.nonoise.org/library/envnoise/

Extractions: We have already defined sound as any pressure variation that can be detected by the human ear. The number of pressure variations per second is called the frequency of sound, and is measured in hertz (Hz). The normal hearing for a healthy young person ranges from approximately 20 Hz to 20000 Hz (20 kHz). In terms of sound pressure levels, audible sound ranges from the threshold of hearing at dB to the threshold of pain at 130 dB and over. Although an increase of 6 dB represents a doubling of the sound pressure, an increase of about 8 10 dB is required before the sound subjectively appears to be significantly louder. Similarly, the smallest perceptible change is about 1 dB. About this Booklet Introduction What is Sound? Types of Noise ... (back to contents) While we have made every reasonable effort to present an up-to-date overview of standards, practices and methods, we cannot guarantee that we have covered all relevant aspects. Please consult your local authority to obtain further detailed information pertinent to your country, state, region or area. (back to contents) News stories related to environmental noise problems abound. Some stories are dramatic, most less so, but huge effort and great sums of money are often invested in conflicts involving environmental noise.
NPC Online Library: Information On Levels Of Environmental Noise Requisite To Pr
(Environmental Protection Agency, 1974). This document is probably the most comprehensive study of noise in America. This is a very large document.
http://www.nonoise.org/library/levels74/levels74.htm

Extractions: NPC Home FOREWORD The Congress included among the requirements of the Noise Control Act of 1972 a directive that the Administrator of the Environmental Protection Agency "...develop and publish criteria with respect to noise..." and then "publish information on the levels of environmental noise the attainment and maintenance of which in defined areas under various conditions are requisite to protect the public health and welfare with an adequate margin of safety." Not all of the scientific work that is required for basing such levels of environmental noise on precise objective factors has been completed. Some investigations are currently underway, and the need for others has been identified. These involve both special studies on various aspects of effects of noise on humans and the accumulation of additional epidemiological data. In some cases, a considerable period of time must elapse before the results will be meaningful, due to the long-term nature of the investigations involved. Nonetheless, there is information available from which extrapolations are possible and about which reasoned judgments can be made.
Division Of Environmental Protection - Noise Control Program
Information on Levels of Environmental noise Requisite to Protect Public Health and Welfare Information on The Big Dig (Massachusetts)
http://www.denvergov.org/Environmental_Protection/template32727.asp

Extractions: Air Quality - Outdoor ... Mini-Survey Division of Environmental Protection Noise Control Program Mission Statement: The Noise Control Program in Denver was designed and enacted to protect, preserve, and promote the health, safety, welfare, peace and quiet for the citizens of Denver through the reduction, control and prevention of noise. It is the intent of this program to establish enforceable standards that will reduce or eliminate unnecessary and excessive traffic and community noise that is physically harmful and otherwise detrimental to individuals and the community in the enjoyment of life, property, and the conduct of business. Noise Program Description: Denver has had a community noise program since 1973, when the Noise Ordinance (Revised Municipal Code RMC, Chapter 36) was passed by City Council and signed by the Mayor. When complaints of excessive noise are received by the Denver Department of Environmental Health, an inspector is assigned to investigate the complaint. If the complaint is legitimate, the source of the noise (individual/company/organization) receives a verbal or written warning of the violation requiring a noise reduction to legal levels. If the source does not comply with the warning, a court summons is issued. If guilty, a fine of up to $999 per incident can be levied by the court. A noise survey was conducted in Denver in 1995 to establish the baseline ambient noise levels in various neighborhoods within the City and County of Denver. It is anticipated that the survey will be updated periodically to determine if the noise environment within Denver is deteriorating because of continued growth and increased vehicular traffic.
Entrez PubMed
Adaptive compensation has been popular in a variety of biomedical signal processing applications. On
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1
Chapter 1: Atmosphere - 1.7 Noise Pollution - 1.7.1 The Issue
Community awareness of environmental noise has increased and there is a higher expectation for Although noise is a significant environmental problem,
http://www.epa.nsw.gov.au/soe/97/ch1/15_1.htm

Extractions: Contacts Feedback Search whole of DEC Botanic Gardens Trust ... Environmental links Search Change text size Sitemap Help 1.6 Indoor air quality ... 1.7.5 Noise control measures Noise pollution can be defined as unwanted or offensive sounds that unreasonably intrudes into our daily activities. It has many sources, most of which are associated with urban development: road, air and rail transport; industrial noise; neighbourhood and recreational noise. A number of factors contribute to problems of high noise levels, including: Community awareness of environmental noise has increased and there is a higher expectation for commonwealth, state and local government to reduce noise levels. Although noise is a significant environmental problem, it is often difficult to quantify associated costs. An OECD report on the social costs of land transport identified four categories of impact from transport noise OECD 1995 productivity losses due to poor concentration, communication difficulties or fatigue due to insufficient rest

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