Ecophon Acoustic Bulletin

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June 29, 2009

Can the sound of a voice move a skyscraper?

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Source image: Dynamic Architecture

Yesterday, one of my colleagues, forwarded a news item on BBC news. Although it has not much to do with acoustics, it is worth mentioning.
Italian architect David Fisher designed the world's first moving building, an 80-storey tower with revolving floors giving a shifting shape. The 420-metre (1,378-foot) building's apartments would spin a full 360 degrees, at voice command, around a central column by means of 79 giant power-generating wind turbines located between each floor.

Click here to see the animation about the first building that rotates, moves, and changes shape


I call these buildings designed by time, shaped by life," said the Florence-based architect, who has never built a sky-scraper before.

For more info click here

June 25, 2009

Test Code for sound absorption measurements.

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CEN/TC 126, Building acoustics, has created a working group, WG 11, to develop Test Codes for suspended, acoustic ceilings. WG 11 started its work about a year ago with Nils-Åke Andersson from Saint-Gobain Ecophon as convener and has now about 15 participants from around Europe. The reason doing this work is the problems with differences in measurement results from laboratories.

Such measurement results are used for the CE marking of products and the uncertainty of results leads to unfair competition and sometimes even misleading information. Test Codes are supposed to be a compliment to existing standards and shall not supersede them, but might later on be incorporated in revisions of the standards.

WG 11 has decided to focus on sound absorption measurements (EN ISO 354) to start with and will later on start up work with flanking transmission measurements (EN ISO 10848-2). There have been 3 meetings so far, where the main topics were to identify possible reasons for the uncertainty of results and to identify laboratories doing measurement for CE marking.
One scope for WG 11 is to organize RRT (Round Robin Test) with measurements according to Test Code suggestions developed. RRT will also generate data for calculation of reproducibility or standard deviation to be included in future standard revision. More than 20 European laboratories have been identified doing sound absorption measurements for CE marking and they are now invited to participate in a RRT, which is supposed to start up this autumn.

Next meeting with WG 11 is scheduled to be held directly after Euronoise in Edinburgh on October 29th.

June 18, 2009

Acoustics in Healthcare Environments - Notes from IOA Conference

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On Tuesday June 16th around 50 delegates participated in a conference in Manchester called "Acoustics in Healthcare Envrionments". The conference, organised by the Institute of Acoustics in the UK, was hosted by Adrian Popplewell, Ramboll UK. Seven papers were presented during the day. One of the speakers, Anthony Thomas of Ecophon UK, wrote some notes especially for Acoustic Bulletin. Please click on the link below to read them.

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HTM08-01 – The new design guide - Richard Budd, SRL
Richard explained how the new Guidance document was produced to give achievable acoustic results in healthcare facilities in a practical, informative document. He stressed that the HTM is not law, and would only be mandatory when the document was written into a construction contract. He strongly recommended an Acoustic Statement be produced for every project, and that derogation should be avoided.

Research into hospital acoustics – review and overview – Professor Bridget Shield, London South Bank University.
Bridget commented that research articles are predominantly from Healthcare, rather than Acoustics, journals, and undertaken by HC staff with little knowledge of acoustics. She noted that there is a lack of UK studies, although the LSBU’s MARU, in collaboration with Acoustics Group, are currently researching Acoustic Design for Inpatient Facilities in Hospitals. She commented that Design of Infection Control is one of a number of factors affecting acoustic design in hospitals.

Sonic issues and resolutions for varied patient groups – Richard Mazuch, Nightingale Associates
Richard expanded presentation topics to include how healing within various patient groups can be affected by (positive) sound, eg music, and well as other sensory interventions (smell, light, colour, etc), and explained how negative sounds (noise) and other inappropriate conditions can have detrimental effects in patient outcomes.

Design of restorative environments for healthcare using the Tranquility Rating Assessment Tool – Greg Watts, University of Bradford
Greg defined tranquility, and explained some of the research he and his team had undertaken. He identified important factors, and gave examples of physiological benefits of moderating factures. He explained how perceived tranquility is affected by soundscape, landscape and moderating factors, and discussed the practical application of his tranquility prediction tool.

Effects of non-acoustics factors on healthcare acoustics – Michael Phiri, University of Sheffield
Michael identified non-acoustic factors, including cleaning regimes and infection control, which impact building acoustics, and evaluated the impact of some of these factors. He highlighted a number of noise-generating items and activities, and stressed the need for the development of a framework which recognises the interrelationships between acoustics and other design considerations. He stated the need for greater involvement of acoustic consultants at the critical stages of the building process – both pre- and post project.

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Front Row (from left to right): Richard Budd, Anthony Thomas, Michael Phiri, Rosemary Glanville

Research into the effect of the sound environment on staff and patients in healthcare facilities – Anthony Thomas, Saint-Gobain Ecophon
Anthony demonstrated that despite a growing awareness of hospital noise it is a major and growing problem in the UK. Using research examples, he talked about the negative effects a noisy environment can have, such as longer patient recovery due to sleep disturbance, and an increased need for medication in post-operative recovery rooms. Anthony also referred to studies showing how the more vulnerable patient groups,ie ICU and, in particular NICU, can suffer significant long-term physiological effects when exposed to high noise levels. In contrast, research indicates how improved acoustic conditions can reduce help patient readmission rates and improve staff morale and efficiency

The experience of using HTM08-01 in smaller healthcare facilities – Philip Hankin, Cole Jarman
Referring to projects such as local GPP centres and LIFT schemes, Philip looked some of the issues facing an acoustician He explained how the document has benefits in providing clarity and good advice on compliance, as well as tying in well with BREEAM Healthcare. On the negative side, he mentioned a lack of guidance for audiology and how for example insufficient co-ordination between HTM08-01 and Infection Control might be used to argue against absorbent finishes. He has found the document easy to use when deign issues are ready accepted by the projects design team.

June 17, 2009

A Unique Acoustical Experience At The Palais de la Découverte, IN PARIS

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Some partners of the Week of Sound have collaborated to provide the visitors of the Palais de la Découverte in Paris with a unique acoustic corridor walk through experience.


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: front view of the corridor’s side walls

The corridor offers a unique acoustical experience for those heading to the « Sounds and Vibrations section » of the Palais. In a recent Note Acoustique (French Acoustic Bulletin)newsletter, one can read: "One of the corridors of the Palais has been fitted with sound absorbing panels. Sound energy is lost by friction, transformed into heat when air vibrates in the air gaps between the fibres. That way, this « relaxing » corridor reduces the sound intensity coming from either end of the corridor. Come and experience this feeling and enjoy the shows « Sound for everybody » and « A timbre for a sound ».

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A plan view

click here to go directly to the original item on the French version of Acoustic Bulletin

June 16, 2009

Euronoise 2009 (Edinburgh) 26-28 October

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Euronoise is the European conference on noise control, co-ordinated by the EAA Technical Committee Noise and organised by a national acoustical society on behalf of the European Acoustics Association (EAA).
Edinburgh in Scotland is the setting for the 8th European Conference on Noise Control

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CAPITAL OF SCOTLAND
Edinburgh is an intriguing host city, rich in history and culture. The conference will be held at the Edinburgh International Conference Centre (EICC), which is in the heart of this dynamic city. With world class facilities, this is the perfect environment for a successful event.
The Conference programme will consist of key-note lectures, invited and contributed papers in structured parallel sessions, workshops and poster presentations.
Final papers are to be submitted by 30th June


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ECOPHON @ EURONOISE 2009
Ecophon is one of the Gold Sponsors for the conference and will sponsor the Chairman’s Reception and Dinner, have an exhibition stand and present 4 papers during the conference.
Check out Ecophon live @ Euronoise for live updates, interviews, summaries, pictures and movies.

The four papers will support much of Ecophon’s ongoing work around how sound affects people by promoting the benefits and consideration of Room Acoustic Comfort™ focusing on the interaction between person, room and activity.

Our papers will cover a range of subjects: Acoustics in Office premises; “Is it possible to create a good working environment in an open plan office?” and “Exploring acoustic parameters for open plan offices”. Acoustics in Healthcare “Room Acoustic Comfort™ in healthcare premises” and Acoustics in Education; “Noise level reduction in secondary school classrooms by acoustic treatment”.

June 15, 2009

2009 TINNITUS DISCOVERY in New Zealand

Coming up soon in New Zeeland is a symposium on tinnitus. This meeting will be a great opportunity for tinnitus clinicians and researchers to join forces and updated their knowledge on this subject.

This "Asia & Pacific Tinnitus Symposium" will tale place at the National Maritime Museum, Auckland, New Zealand, 11 - 12 September 2009.

Read here as to get more detailed information!

June 12, 2009

Evidence Based Design – quieter hospitals improve patient outcomes

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Evidence Based Hospital Design (EBD) is a new field that guides health care construction. Research indicates that well-designed physical settings play an important role in helping hospitals to support patients healing and making hospitals better places for staff to work. The findings support the importance of improving a range of design characteristics or interventions, including good acoustic environments, nature distractions and daylight.

The state of knowledge of EBD has grown rapidly in recent years. And today we know that a building exerts a powerful force on the delivery of health care. Studies suggest that natural light, quiet surroundings and scenes of nature can, among other things, reduce patient stress.

“Design is not just focusing on making new hospitals pretty and nice. It’s focusing on the patient outcomes we want from building design, says Anjali Joseph, director of research at the Center for Health Design.

Read more about Evidence Based Design in the report from the Center for Health Design.

June 11, 2009

Grand Designs on School Acoustics

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An impressive initiative by the National Deaf Children's Society (NDCS) and Grand Designs Kevin McCloud involving 50 MPs, is calling for government to ensure that new schools meet national standards for acoustics. The call comes after Freedom of Information Act data received by NDCS showed that only 21% of the local authorities in England that responded had new schools with acoustics meeting the requirements set out in Building Bulletin 93

Read more about this in a recent Building magazine article.
The NDCS have a real insight into the reality for deaf children in mainstream schools and have recently highlighted new figures which show that deaf children's GCSE results continue to lag behind those of all children, and may even be falling further behind. http://www.ndcs.org.uk/about_us/campaigns/england/campaign_news/data_2008.html
Supporting action regarding these new figures the NDCS's UK-wide campaign report, Must do better!, set out the barriers that are holding deaf children back and recommendations for Government action.

June 9, 2009

Shopping music – influencing you either you like it or not!

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Earlier this year the founder of the “elevator music”, Muzak, went bankrupt! But the business of background music, making you shop more, is still successful.

Matching the music with the target group is important! It is a matter of finding the appropriate sound level. Too high sound level might be disturbing. But then again, some shops have rather high sound levels since they target young people.

The father of background music, George Squier, applied for a patent already 1922 with regards to distributing music via the electrical lines in buildings. Inspired by Kodak, he named his company Muzak, and background music was connected to psychological research.

One company working with background music is Musicpartner. They tailor make music for companies and distribute it either via satellite or internet. They say they that two things are important. The function: how the brain reacts. The identification: What perception the customer has about themselves through the music.

Music filling the boutique! (In Swedish)
Read more:

What is Muzak? (in English)
Read more:

About Muzak and background music. (in English)
Read more:

MusicPartner (in English)
Read more:



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