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and accepted the reasons or knew what actions are needed for future success.
On a personal note, the organization of the meeting was well handled by Professor Samir Gerges and his aides, and the venue was exceptional—a hotel on a 3-mile beach perfect for running—with excellent food and wonderful weather. My detailed report follows after the other two reports.
Report by Jeff G. Schmitt
The ISO/TC 43/SC 1 Working Group 28 meeting on sound power level determination and sound pressure level measurement standards was held at the end of November 2012 in Florianopolis, Brazil. The meeting was well attended with representation from the US, Canada, Japan and several European countries contributing to the discussion.
Key standards under discussion were an upcoming revi- sion to ISO 6926 on the calibration of reference sound sources. A significant number of technical comments had been received in response to circulation of the first Draft International Standard (DIS) version of the document and these were discussed at the meeting. Key areas of discussion involved issues related to measurement traceability and uncertainty, as well as clarifications and improvements to the general method requirements, which remain largely similar to the previous version of ISO 6926.
Also considered was a Committee Draft (CD) document on an amendment to ISO 3745 Acoustics— Determination of sound power levels of noise sources using sound pressure— Precision methods for anechoic rooms and hemi-anechoic rooms, Annex A, which would adopt the new ISO 26101 standard as the method for qualifying free field test environ- ments for sound power level determination. A New Work Item Proposal and a first CD version of this amendment will be forthcoming in 2013.
A discussion of the recent revisions to the ISO 3740 series of sound power level determination standards, and in particular ISO 3744 (Engineering methods in an essentially free field over a reflecting plane), led to a general discussion on the overall complexity of the documents and difficulties that normal users have interpreting and implementing them. The Working Group agreed that in an attempt to have our standards address the more complex acoustic situations, we have made it difficult for most users to make the more typi- cal measurements. As a result of these discussions, a task group was formed to develop some preliminary drafts of a simplified sound power standard, with ISO 3744 being the first work item for consideration. Additional actions are expected in this area during 2013.
Other agenda items included revisions to ISO 3740 and ISO 11200, both guidance documents for the overall series of sound power and sound pressure level standards and an upcoming ISO/DIS 9295 on high frequency sound power level determination. Other preliminary work items were also considered during the day and a half of meetings.
In addition to the WG 28 meeting, I also attended the WG 17 meeting on hearing protector testing. A CD version of an update to the ISO 4869 procedures for the measure- ment of hearing protector attenuation using the Real Ear
standards. An applicant for a Travel Award shall be self- employed, an employee of a small firm, semi-retired, or retired. Recipients of travel support awards shall be members of the Acoustical Society of America.”
2012 Award Recipients
The 2012 Robert W. Young Travel Award recipients were Robert Hellweg, Jeff Schmitt, and Laura Ann Wilber, who attended the ISO/TC43 and ISO/TC43/SC1 working group meetings held in Florianopolis, Brazil, November 26–30, 2012.
In addition to the three award recipients, the United States was represented by Paul Schomer (Head of the US del- egation and ASA Standards Director), Elliott Berger (3M), Joseph Bocchiaro (InfoComm International), Douglas Moore (General Motors Company) and Brad Moulton (ExxonMobil).
• ISO TC 43 Working Groups that met in Florianopolis were:
WG 1 Threshold of hearing
WG 9 Method of calculating loudness level
• ISO TC 43/SC 1 Working Groups that met in
Florianopolis were:
WG 17 Sound attenuation of hearing protectors WG 28 Basic machinery noise emission standards WG 42 Measurement of noise emission (external) from road vehicles (Joint TC 43/SC1/TC 22 work- ing group)
WG 45 Description and measurement of environ- mental noise
The following are the reports of the three ASA Robert W. Young Award recipients on their activities—an overview from each followed by some of the meetings details.
Overview by Robert D. Hellweg, Jr.
Having received an ASA Robert W. Young Travel Award for the Development of International Standards, I was able to attend the ISO technical committee 43 (TC 43) (Acoustics) and the ISO/TC43 Subcommittee 1 (SC 1) (Noise) meetings in Florianopolis, Brazil. There were representatives from thirteen countries: Brazil, Canada, Denmark, France, Germany, Japan, Republic of Korea, Luxembourg, Norway, South Africa, Sweden, United Kingdom, and the United States of America. The previous ISO TC43 and TC43/SC1 meetings were held in London, England in April 2011.
I participated in two ISO/TC 43/SC 1 Working Group (WG) meetings: WG 28 “Basic machinery noise emission standards” and WG 45 “Description and measurement of environmental noise.” After the working group meetings, I attended the plenary meeting of SC 1 at which I reported the activities of WG 28 and the plenary meeting of TC 43.
It is important that the United States have effective representation at ISO working group meetings since, in practice, the responses to comments on draft standards are determined during those meetings. I believe overall the U.S. delegation was successful in accomplishing its goals, and where we were not successful we either understood
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