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M. Protection of Competition adopted rule against noise pollution, but "limited" commercial supply

Agency Competition of the Andalusian Regional Government has given its approval to the Regulation on the protection against noise pollution in Andalusia that develops the Ministry of Environment, but has warned that it "restricts" the free exercise of certain economic activities and may affect competition in the market.

Thus, as recorded by the opinion that this organization has made on the regulations against noise pollution which was seen by Europa Press, the document contains a number of provisions that could affect "the free exercise of economic activities, limit development in certain geographical areas and to condition the granting of new licenses and / or extension, modification or suspension of certain existing zoning requirements for acoustics. "

however, said that given that the objective of the rule is to regulate the quality of atmospheric environment to prevent, monitor and address situations of noise about noise and vibration to protect the health of individuals, such restrictions are "justified".

Possible body restrictions points are expressed in articles such as Article 19 et seq regulators of special acoustic zones. In particular, and for areas of special noise protection, Article 20 provides as a corrective measure the option to disallow the establishment, expansion, modification or removal of an activity that increases the values \u200b\u200bof noise levels, and facilitate opening acoustically less polluting activities that exist.

For his part, and acoustically saturated areas, Article 21 provides as a possible corrective measure to suspend the granting of new licenses to open, as well as modifications or additions regarding generating activities noise at night.

According to the U.S., these provisions will result in "reducing the number of operators in a given market and the possibilities of action of existing, so the competition" is affected in the sense that the pressure increasing competition reduces the possibilities of carrying out practices that harm competition, such as price fixing or market sharing. "

HOMES, HOSPITALS AND SCHOOLS

Another measure that may affect competition in the field of construction by limiting the supply, as noted, is mentioned in Article 35.1, where it is stated that "no new licenses may be granted for the construction of buildings intended for housing use in hospitals, educational or cultural if noise levels violate the acoustic quality objectives set in each area, except that locate in special noise protection zones, acoustically saturated zone or when the respective City Council, for exceptional reasons duly justified public interest, expressly authorized. "

Moreover, Article 43 states as a prerequisite for obtaining permits or licenses certain activities and facilities that produce noise and vibration the presentation of an acoustic survey on compliance during operation of the quality standards and prevention.

is thus a "prerequisite for access to those new players who intend to enter the market and, consequently, there is also an involvement of free competition," says the agency, who On the other hand, stresses that, in addition, Article 50 establishes the requirement for the person or entity sponsoring of activities and facilities for obtaining a certification of compliance with the standards of quality and noise prevention prior to the implementation or operation of those.

But against these considerations, the Council considers that there is an "obvious reason of general interest for this standard, as is the protection of the preservation of natural resources and environmental protection, the primary objective of European Community, which enables the public authorities in the scope of its powers to introduce restrictions on the functioning competitive markets.

addition to these "important" reasons, he says, the same article 1 of the standard under report expressly stated purpose of the health protection of citizens' right to privacy, property legal enjoy the highest protection.

They conclude that almost all of the restrictions contained imposed by reason of environmental protection, appear "reasonable" from a standpoint of efficient regulation and enhancing of competition, since they introduce "limitations provided and with little impact on the conditions of competition "and, moreover, are already provided in a regulation having the force of law, as GICA Act, limiting the draft decree to develop them.

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ETSAM Teacher Conference Michael Vörland, Institute of Technical Acoustics RWTH, Aachen University, Germany. Aspects of Architectural Acoustics Design

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UCA Conference and AAIC cooperate to promote social awareness of noise pollution Thoughts

Andalusian Association of Engineers & Consultants Acoustic arises from the official master of this subject, driven by the laboratory of the University of Cádiz

The rector of the University of Cádiz, Diego Sales, and President of the Andalusian Association of Engineers & Consultants Acoustic (AAIC), Fernando Lopez, accompanied by Professor Ricardo Hernandez, have signed this morning a partnership agreement to promote and disseminate social awareness on the harmful effects of noise pollution.

An agreement to regulate the existing cooperation through specific agreements between the Laboratory of Engineering Acoustics of the UCA and AAIC in this field. An association that arises precisely from the first edition of the Master's graduate School of Engineering and led UCA laboratory whose first students are now sponsors. Sales

explained that for several years, the University of Cadiz work in this area of \u200b\u200bengineering, first with expert training and technical specialist to get them to shape their content and adapt it to European Higher Education Area with the official Master of Engineering Acoustics. The rector was pleased with this alliance as "the birth of a partnership if a guarantee of quality for the guild, in defense of their interests and for promotion and recognition of their profession."

López told the Andalusian organization was established in 2009 in Antequera and its objectives is to provide "our support and contribution to public and private agencies in the development and execution of studies, projects, policies and other activities aimed at the protection and improvement of noise pollution. "

Hernandez, who is responsible for Acoustics Engineering Laboratory of the AAU, said that the University of Cádiz has been a pioneer in developing teaching and research in this area currently demanding professionals with higher education, hence the establishment of the official master would be home to the association and other corporate spin-off projects such as Studio 15 and Sincosur .

Specifically, UCA and the company Sincosur Sustainable Engineering, whose representative is also Fernando Lopez, signed a partnership agreement to address the delivery of courses, seminars and educational activities and research.

currently AAIC by the UCA are working together for a year in the draft National Plan Against Noise Pollution in the Canary Islands.

investigators Cadiz institution working in the following areas: environmental noise, air and underwater, vibration and maintenance.

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sonorvisuales

Malaga The prosecution has requested a penalty of five years in prison for the owner to issue a nightclub noise disturbing the residents from the premises. They put up 14 complaints between 2000 and 2006, but still not taken any steps to soundproof the premises, which also had an unfavorable report prepared by the technicians of the Industrial Activities of the Provincial Council of Malaga because of volume delivered.

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UNE processed in November 2010

The Department of Environment of the City of Alicante has initiated a system for measuring real-time noise pollution in the municipality, which consists of a network of 16 controls distributed throughout the city to collect these data. Each measurement is composed a solar energy power supply, a microphone, a sound meter and a modem for data transmission. These data collected can be viewed via the website of the City Council and will serve both to inform citizens and to inform the technicians to take appropriate corrective action.

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Aecor creates a job for professionals

Array Pentagular

One of the unique characteristics PULSE acquisition hardware LAN-XI is the possibility of sharing the machine's front panel offers the user the option of using a large number of sensor models and cables.

Some of the advantages of this feature are:

· Fewer cables to work

· Reducing noise problems in the system

· ...

have been recently incorporated the following interchangeable front panels:

· UA-2108-060 for connection of 2 cables triaxial accelerometers with SMB type

· UA-2108-120 for connection of 4 accelerometers axial-type SMB wired

· UA-2112-060 for connection of 6 microphones with LEMO cable (basically in acoustic holography systems)

· UA-2112-120 for connection of 12 microphones 2 LEMO cables (basically acoustic holography systems)

· 2113-066 UA-module with 6 inputs and 6 outputs to monitor the input signals

· 1703-A-060 6-channel module type pressure sensors Kulite

For more information on this story click here .

For more general information www.bksv.es

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dBA noise, opened his office in the heart of the city of Granada Granada

EFE EME Text published Mar 29, 2011 in category Spain, News

The Provincial Court has sentenced Granada José Luis Sánchez Rodríguez, owner of the room The Drying of Alhendín (Granada ), 2 years and 6 months in jail and a fine of 4,560 euros for a "crime against the environment with serious risk to human health" by noise from their premises. The court has found that between 1994 and 2008 The drier set at "serious risk", the health of the residents of adjoining development the Alamo. In addition, Sánchez Rodríguez shall indemnify the nine neighbors recognized by the prosecution as injured with 30,000 euros in total. Those affected complained that the noise from the concert hall they produced "insomnia, irritability and affection on the performance of their work."

Had been sentenced to less than two and half years and no criminal record, Sánchez Rodríguez would have avoided prison. His lawyer has announced that it intended to appeal the ruling to the Supreme.

"I'm shattered, the ruling is devastating. Very hard against me. They ended with 14 years of culture and free stage in Granada and also want to finish behind bars, "said Sánchez Rodríguez. "The opinion is very hard and wanted to be exemplary because the crimes against the environment in this country are very fashionable."

The drier offered live jazz, singers, classical, etc.. There were also outdoor concerts. During the week, served as a rehearsal band Granada. Besides opening a terrace with music.

Several musicians have been mobilized in support of Sanchez Rodriguez and ask to be held accountable for playing their songs and receive applause.

Lapido says: "My puzzlement is that a penal code that allows an aberration like this when you can live here all life without stepping on a jail. " And Jesus Arias (TNT): "Qualifying live music a crime to health is a nonsense. It is very significant and revealing to talk about noise, not music. "

has created the Facebook group 1000 signatures to reopen the Drier in Granada.

This is the manifesto of the musicians:

WE ARE ALL THE DRYER! Given the scandalous

statement condemning the president of the Cultural Association The drier than two years and six months in prison and tens of thousands of euros in compensation for performing in local musical performances, the undersigned declare that:

Before the abuse of the common sense that this type of prosecution is, you must call attention to the need that this city has spaces for culture and the drier, paradoxically spaces in other cities and countries are carefully tended protected and enhanced as a common good, while in this particular case comes to treating its head from the absolute injustice as a criminal. The undersigned

not only we stand in solidarity with the accused, but we went to the Provincial Court Section II (SUMMARY 120/09) has issued this statement, acknowledging publicly that we are the real culprits of the crime court, in that we have been us / as those who have committed to its stage playing our music, singing our songs, and also being accomplices to applaud and promote and disseminate these activities.

Having recognized our guilt, we request the competent court which exonerated the owner of the place where we made our offense, and sentenced the sentence extends to each and every one of the signatories.

In Granada March 20, 2011

PS: If you agree to return it with your data: somostodoselsecadero@gmail.com

Name:
ID:

While

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Attorney's Office has requested five years in prison owner of a club by noise Alhedín

efforts in genetic engineering and synthetic biology are usually carried out for food or health, the artist David Benque investigates the role they would play these sciences in culture. Acoustic Botany is a sound genetic engineering project applied to a garden where cultivated genetically modified plant species that interact with the animal kingdom . A escosistema whose fruit is an organic musical product is a new way to exploit nature for human enjoyment, if they can still be considered natural.

Species project contains a giant amplifier lily (giant lilly speaker), which catches insects with its pollen and retained for 24 hours until they die. During that time the plant will amplify sound vibrations caused by the insect through a membrane placed on the sheet. Another example is the sound obtained through the fruits of walnut (nut tree string). The insects fall into the walnut shell and eat the flesh chewing rhythmically. The fibrous cords hold the fruit for a couple of days before falling to the ground, and meanwhile the shell will act as a resonant box.

may seem like science fiction but is a project to Benque has presented in the exhibition Work In Progress of the Royal College of Art in London, and whose musical crop harvest in the coming months.

giant lily amplifier

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The innkeepers of Murcia started a campaign to prevent noise produced by night nightlife spots

The first issue of this year Notices of the American Mathematical Society , the most widely read magazine by the mathematical community, is dedicated full to find the beauty in mathematics. The article that interests me is the third name: Music: Broken Symmetry, Geometry, and Complexity . Here we can see how the researchers used a mathematical function called "Gabor transforms" to analyze and generate sound spectrograms, graphs depicting the signal variations over time.

The technique allows, for example, Louis Armstrong's voice sounds like his trumpet. And indeed, in discussing his interpretation of La Vie en Rose, separate spectrograms of song and sound of the trumpet reflect the vibrations and the high points are similar.

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Valencians again bear the noise of aircraft flying over the city

There are many recordings using Chladni plates to see how sound manifests. Thoughts sonorvisuales is a project initiated in 2005 by artist and researcher Analia Fontan and was first presented in the exhibition "Form and Sound", organized by the National School of Fine Arts and the Goethe Institute in Montevideo. View

sound allows us to enjoy extra. Re-think of the sound field, from this perspective opens the door and puts us at the possibility of re-signify and resize the limits of our perception.



video Audio:
"The sounds are vibrations. They defined shapes arise. Every sound creates a form in the invisible world. Special notes give rise to particular forms." Sri Swami Sivananda



"May the sound generated forms was something I sensed but I ended up checking myself. I present images that speak for themselves. I came to these patterns using a simple device designed by the master of the acoustic EFF Chladni in the eighteenth century, giving a visual representation of the sound vibration without electronic means.


Each of these forms corresponds to a fundamental frequency and harmonic series, a number of nodes and an interesting variety of modes of vibration that can be explained by integral and derivative math.


Without wishing to delve into scientific explanations, I would like to highlight an idea that I can not rule out: the relationship between vibrations and shapes are all around us all the time in nature, culture, art, everyday life, invisible in the dialogues between our sensory perception and around us. Analia Fontan


(November 2005)

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Updated UNE relationship related to acoustics and vibration published in the BOE, processed in November 2010 and published by the Directorate General of Industrial Development, under Ministry of Industry, Tourism and Trade.

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UNE

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The English Association for Quality Acoustics, Aecor, continues its series of enhancements to its associated service by creating a new platform in its new bulletin board system website, www.aecor. is . Partners can apply for professional and business opportunities in companies associated with the association fosters a better internal communication within the sector, especially in these times when recession and unemployment figures remain high and there needs to Channel smarter and faster.

The new job board is within the great renewal experienced by the forum system, which seeks to not only constituted as a handy tool for finding information related to the sector, but it allows communication among professionals in the field of acoustics. From the management and administration are moderated Aecor various discussion forums on technical and environmental aspects related to acoustics.

Aecor offers an important and timely information on developments work in the sector, information on courses, acoustic instrumentation, noise pollution, national legislation, regional and foreign and domestic advisory work among partners, which becomes another engine within the association.

The forum has established itself as an element of added value, to improve and increase services offered and making more available all the information of the association, serving as a reference for all those partners who want to delve into specific issues environmental and building acoustics.

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From March dBA sound opens its new customer service office in the capital of Granada, on Calle Gran Capitán. Thus dBA, noise creates a new link with partners and customers.

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UNE processed from March to October 2010 Published

The hotel industry in the city of Murcia will begin on February 14 a campaign against night noise caused by people leaving to smoke in the nightlife spots in town. The title of this campaign is "Have fun without disturbing", and will consist of placing stickers on the visible areas of the bars the door warning customers to respect the rest of the neighbors. These stickers are also placed in other locations such as payphones or panels.

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The prosecution has asked for up to five years in prison and 47,000 euros compensation to residents affected by noise from a local for a drink in Alhedín. This offense would be leading from 1994 to 2008, which have led to psychological problems in those affected.

Measurements made on the premises recorded 52.6 decibels, when the maximum is 43.9.

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UNE-ISO 21930:2010

The March 11, 2010 was a great day for the residents of Valencia and Xirivella. The first plane took off into the sea in the morning went off a few meters to the south two miles after takeoff from Manises and thereby prevent fly over the houses in the neighborhoods of San Marcelino and San Isidro. That day came into force a route Aena studied for months to cause as little inconvenience to the residents of both cities. A year later, however, that path that has so benefited the rest of the neighbors will be canceled.

Within ten days, as reported by the state company technicians to municipalities affected by noise from the Manises airport, the route will take off before the 11 March. It will be a temporary change that will last about four months, and coincides with the increase of flights from the end of March will occur with the new routes during the summer season.

The reason given Aena to return to the past is to replace the current system of radio navigation aids air by one of last generation. This technology allows pilots to follow a preset route flight, while not actively require aircraft to use the old path off the straight line, and that flies thousands of homes and neighborhoods Xirivella south Valencia.

technicians did not think the seven municipalities that attended yesterday's meeting, convened by Aena, which they had prepared this surprise. At the tenth meeting of the Technical Working Group on Noise, after complaints from City Council Valencia, Aena has decided to ask to enable a telephone number that will be available on the web to be the public company which "inform the public directly about the situation."

Noise Pollution Councilwoman of the City of Valencia, Lourdes Bernal, said yesterday that it is a "good news for the neighbors, since we have spent many years fighting to ensure that planes do not dare the city risks involved and the noise they generate. " For now, it had only managed to approve the change in take-off path, and still is to advance route changes following the aircraft for landings.

Yes there has been progress, however, launch a new application, which is viewed through the Aena website paths of aircraft and the noise level in a particular location.

its meeting held yesterday, and the technicians who were called the consistory of Valencia, Manises, Xirivella, Quart de Poblet, Mislata, Ribarroja and Aldaia, Aena said that this new application will allow to view Movimas aircraft and reported data as code, altitude or type of aircraft, although 30-minute delay for security. Recorded data will be available by the noise monitoring system installed around the airport during the past 45 days, and even select a location for the system to calculate the distance that separates him from any plane that passes through there.

This system, already in force at the airport Barajas and El Prat, will also allow residents to file claims or complaints to the routes of the aircraft. In this regard, the council of noise made it clear that the City Council "will be followed up to confirm their implementation, as it is important to residents suffering from aircraft noise. "

Aena
technicians also reported that in the coming months will be subject to public consultation and information "noise easements Manises airport and associated action plan." This action, according to Aena, "will clearly benefit the residents concerned and that the easements are established definitively associated with the actual activity of the airport." That is, there will be a larger number of neighbors who have the right to isolate him his home, since the last study on the condition of the planes was calculated before the extension the airport and when the number of flights was much lower than the current.

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The Italian standard UNI 11367:2010 acoustic classification of buildings

Brüel & Kjær adds a new array of microphones to the widest range of equipment for measuring acoustic holography market. This is an array of 30 microphones pentangular low cost (model 4949) with a diameter of 3.5 meters.

The system has a camera in the center of the array and its arms can be oriented at 0 ° or 30 ° to the plane of acquisition. The main applications are the localization of sound sources at a distance or large areas (factories, wind turbines, trains ...).

Like other applications of acoustic holography, this array using the PULSE system and equipment acquisition. In this way the user not only has a tool designed to locate sources of noise if no access to the platform complete acoustic and vibration market.

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Tidoni Davide is a visual artist and sound very interesting for an acoustic. I leave you with two of their last jobs.

The first is different signals that make us see we're in an interesting sound. Each sign represents the interaction that takes place in an architectural space with sound that can occur. The human figure suggests the point where it should locate to listen.

I think our city should be full of these signs, and there are many sites with reverb, galleries whispers, echoes and reflections curious. We would be more aware of how sounds behave and sound spaces give us information about our environment.

This second job you can see and hear what is called a flutter echo . Sound waves trapped between two parallel walls and how to go over and over again the same space are deformed. We could say that the wave is trapped between the smooth reflective surfaces and reflected energy is coming to create a different sound than originally issued. And change because they interfere with certain frequencies and canceling others interfere joining in the different reflections that occur.

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Bizkaia Provincial Council over noise barriers installed in the A-8 as it passes through

www.acusticaweb.com

That Hollywood reinterprets the reality and what we are clear, but we like. Although the silence the sound of a gun with a rolled towel or put a pad in front of the barrel as does Toni Soprano, the acoustic cast us not ever.

The noise level of a shot gun without a silencer is around 140 or 160 decibels (which can cause permanent damage to the ears), while if you put a silencer, the noise decreases only up to 120 or 130 decibels . This noise is equivalent to a jackhammer (able to cause you damage your hearing if you're close enough).

need to reduce the length of muffler sound. It's pure physics, but can make some tweaks to increase capacity.

The shot noise comes from three different causes:

1. The detonation, which is the combustion of gunpowder and is the main noise. That is eliminated or reduced with the use of silencers.
2. The breaking the sound barrier . For this subsonic ammunition is used and integrated sonic suppressants. The
3. automatic weapon. They are metal parts that move and make noise.

Using a supersonic ammo silencer reduces the sound but not apaga.Usar subsonic without silencer reduces the sound too, but it would be best to use subsonic ammunition with a silencer.

I leave you with a couple of videos to illustrate the topic.

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Barakaldo

In the sixties, the U.S. arranged a series of powerful underwater microphones (hydrophones) at strategic points in the Atlantic and Pacific oceans, to several hundreds of meters deep. The spy network called SOSUS submarine hearing, Sound Surveillance System. His mission was to "hear" the passage of Soviet submarines by these oceans and to alert the U.S. Navy. Currently still remains the network of hydrophones but at the end of the Cold War, declassified the project and allowed its use to scientists, biologists, oceanographers, etc.

The Bloop sound spectrogram

Throughout the nineties and even today, occasionally fail to capture these scientists and record sounds of unknown origin that can be located thousands of meters deep . It has been dubbed the most famous of them as "The Bloop " because it is more like onomatopoeia recorded sound. Some of these sounds are believed to be caused by underwater earthquakes and volcanoes and has not yet been reach abyssal depths, where the ocean floor a much larger mystery to scientists than outer space. But some of these sounds challenge the knowledge accumulated by scientists to date.

Location sound

Christopher Fox of the U.S. National Oceanic and Atmospheric Administration's Acoustic can you tell if a sound is produced by a living being by a series of marks "on the sound . Some of these unfamiliar sounds recorded by the system SOSUS seem to have a biological origin, but more mysterious is that, judging by the intensity of sound recorded by sensitive hydrophones located at large distances between them, which captured the sounds and allowed them to locate the source, it follows that, if sounds produced organically should be a giant sea creature, much bigger than a whale . Monitoring Project in Portland, said the sound waves are like fingerprints:

is exciting as it was then strong comeback the romantic idea of \u200b\u200bthe existence of sea monsters and the kraken in this world and almost lost his sense of wonder about the unknown. Some even venture to name the Cthulhu himself, as some of the recordings were located near the area where the horror story writer HP Lovecraft placed the mythical R'lyeh, the sunken city where sleep this being immortal who came to Earth from the stars long before the appearance of life on the planet, hoping to reimpose his reign of nightmare and madness.

less fun
Another hypothesis is that it also could be sounds produced by shock, friction, cracks and dips of large icebergs . These sounds can be caught the so-called deep sound channel, an area of \u200b\u200bdeep underwater where the pressure and water temperature cause the sound to be trapped and can travel thousands of miles without dissipating horizontally vertically. But what we know now, it could also be not previously recorded sounds produced by animals known to drastically alter their behavior may sound (read the post " A seals would like Pink Floyd).

You can hear some of these unfamiliar sounds of the deep online and judge yourself but I'm trying to memorize the following verse in case I needed in the future: ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn.

Jordi Casadevall

The Bloop You can hear in this video

Updated

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UNE relationship related to acoustics and vibration published in the BOE, processed between March and October 2010 and published by the Directorate General of Industrial Development, Ministry of Industry, Tourism and Trade.

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Environmental declaration of building products

The designers of buildings, building product manufacturers, users and owners of buildings and elsewhere in the sector of building and construction demand, increasingly, information that enables decisions to address the environmental impacts of buildings and other construction projects.

UNE-ISO 21930:2010 Sustainability in building construction makes the principles and requirements for environmental declarations (EPD) Type III construction products for buildings.

The DAP objectively report environmental impact of the product. A tool that allows governments, planners and builders, as well as end users, compare and choose the materials taking into account their environmental impact.

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Aecor

already are ten European countries that have a sound rating system for buildings that exceed the noise requirements contained in their legislation. Through these systems provides added value to buildings that exceed the minimum acoustic conditions encouraging housing market based on quality, which will revert to a higher qualification of professionals involved in the construction process and encourage the development of new products and building systems more acoustic efficiency.

The last country to join this global trend that has been Italian, the month of July 2010 approved the Italian standard UNI 11367:2010 "Acoustics in edilzia: Clasiificazione immobiliari acustica delle Unita. Procedura di valutazione e check in opera ", which describes the procedures for classifying acoustically real estate units. Under this rule, property unit means any part of a building (home, office, industrial space, etc.) Or building (buildings, offices, hotels, teachers, etc.), Or set of buildings that, according to local use has a range functional and income.

1. Acoustic parameters listed in acoustic classification

The acoustic classification is based on a verifiable system requirements by measuring "in situ" of the following parameters:

• airborne sound insulation of facades: Differential levels D2m standard, nT, w (dB)
• airborne sound insulation of interior partitions (horizontal and vertical) dividers use units: apparent sound reduction Index: R'w (dB)
• impact sound insulation between different units of usage: L'nw (dB)
• sound pressure level from continuously operating facilities: Lic (dBA)
• sound pressure level from operating facilities discontinuous Lid (dBA)

The noise classification can be expressed for each requirement separately, or through a global value. The value of each requirement is obtained by averaging all the values \u200b\u200bof each parameter obtained from measurements in situ of the various elements of the building, and in turn, through a new averaged values of each requirement we obtain the global value.

2. Classes and system requirements

The following table shows the four classes listed in this classification system building acoustics:

Any value less than class IV, shall be deemed not classifiable known by the acronym NC.

3. Classification procedure

The first step in classifying any property unit is to identify all measurable elements, affected by the requirements of Table 1. In general, if the corresponding building unit used a single unit such as a single dwelling or a single office, should be measured all of its constructive elements. In the event that the building unit is a full height building configurations and construction elements repeated in different plants, there is the possibility to carry out tests "in situ" measurements only in a limited number of building elements according to a sampling plan specified in Annex G of the rules themselves.

3.1. Sampling Plan

The procedure de muestreo especificado en la norma UNI 11367 se basa en la identificación de grupos homogéneos de lo que la norma denomina elementos técnicos acústicamente equivalentes. Se considerará que dos parejas de recintos son equivalentes si:

• Las dimensiones del elemento separador
• Dimensiones de los recintos
• Metodología de prueba
• Igualdad de elementos constructivos (masa, espesor, materiales)
• Condiciones frontera
• Presencia de instalaciones o elementos pasantes
• Método de ejecución/instalación

The choice of these samples is based on detailed analysis of the building project, both from the point of view of the solutions, as their meetings, dimensions, positions and specifications of the facilities. For buildings, these homogeneous groups should be composed of elements from different units of use.

Regarding dimensional separation of building components and compounds involved, a tolerance of 20%. The number of trials in each condition in each homogeneous group must be at least 10% (rounded to nearest whole number), with minimal 3 trials per group.

is possible that these buildings have elements that differ from each other and they can not grouped in any homogeneous group and which were not able to apply the method of sampling but should be tested in all cases. Ie a requirement to assess a building we must consider the elements grouped into homogeneous groups that can implement the sampling plan and the heterogeneous elements, not grouped, and therefore should be tested in its entirety.

3.2. Measurement methods

tests "in situ" to evaluate each requirement executed according to the following standards:
- ISO 140-4: airborne sound insulation of interior partitions (horizontal and vertical)
- ISO 140-5: airborne sound insulation of facades
- ISO 140-7: Isolation impact noise between units use different
- ISO 10052 and ISO 16032: sound pressure level from installations of continuous and discontinuous

3.3. Calculation of the resulting class

Regardless measurements have been made of all elements or have been conducted only in a limited number of possible application of this system sampling to identify homogeneous groups, calculate the net worth or utility value of each test. This utility value is defined as the value obtained in the test corrected with the value of the measurement uncertainty (Um) for each type of test and shown in the following table:

The correction of measurement uncertainty we will rest when it comes to isolation parameters a) and b) and adding to those who try to sound pressure levels c) d) e).

Xi = xi-UXi for a) and b) Yi = yi +
Uyi to c), d) e)

then gets the value of each homogeneous group from the average of the net values \u200b\u200bobtained from each of the tests have been performed for each requirement, according to the following expressions:

Xr = Σ (Xi) / n) and b)
Yr = Σ (Xi) / n c), d) e)

where n is the number of tests performed for each homogeneous group

If

has done a show, you should also take into account the uncertainty for that sampling Ush, which depend on the standard deviation values of tests for each homogeneous group and the level of confidence you want to declare and determine the value of the coverage factor k. UNI 11367 standard provides the confidence level of 70, 75 and 80%. The expression used to determine the uncertainty of sampling is as follows:

Ush = ssh * k

From net average value and uncertainty sampling, we obtain the representative value of each homogeneous group:

Xrh = Xr-Ush for a) and b)
YRH = Yr + Ush to c), d) e)

And you get the value of each requirement a), b), c) d) e ) calculating the mean energy of homogeneous groups involved:

Xrj ^{Σ = -10 lg (10-Xrh/10/n)} for a) and b)
Yrj ^{Σ = 10 lg (10-thirteenth / 10 / n)} to c), d) e)

where n is the number of homogeneous groups on which it has tested a requirement.

Finally, by comparing the values \u200b\u200bobtained are in Table 1, we obtain the class corresponding to each condition Ci. It is also possible to classify the entire building with a single global index Zui, which are weighted for the type obtained for each requirement according to the following table:

Obtaining the total value of the property unit Cui, after rounding to the nearest whole Zui, calculated by the following expression:

Zui = Σ (Zr) / P

where P is the number of parameters that have obtained classification.

4. Expression of results

Finally, we express the classification results in the following format:

acoustic Classification a housing unit in which they have measured all of its elements:

Classification acoustics of a building unit in which only did a limited number of tests according to sampling plan:

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The Provincial Council of Bizkaia is in full implementation of the works to reduce noise pollution in the highway A-8, and for this, will launch in a few days the placement of noise barriers in route passing through the town of Barakaldo. The placement tranche of these screens will have a length of 924 meters and will be the one that goes Santander-Bilbao effect, beginning at the height of the football field Retuerto and ending at the interchange Cruces.

Since the Regional Council has announced that soon will be released for bids placement of noise in the reverse direction, leaving completion of all the placement of screens in spring 2012.

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Presentation Course Calendar 2011

education and training for customers is part of the tradition Brüel & Kjær. Brüel & Kjær Iberian existed for 40 years. When contacting us, you always deal directly with its own staff dedicated and trained exclusively for the company.

Our educational program offers modular training courses, ranging from theory to applications and instrumentation. The course content is varied and covers various areas of knowledge. The theoretical concepts are explained in an entertaining and easily understood, supported by many real examples

As every year, we introduce our calendar of courses and online courses (Webex) to be held throughout the year 2011 in Spain.

Places on the courses and events will be limited to ensure optimization and to facilitate the implementation of practices and achieve high comprehension by all students.

If you want to download in PDF our course calendar can click here .

To download the curriculum can do here ..