My story on classroom listening conditions (classroom acoustics) is published in the Spring 2009 issue of the "Hands & Voices Communicator" Volume XII - Issue 3.
Here's the link to the story posted on the Hands and Voices website:
https://handsandvoices.org/articles/tech/V12-3_acousticsHubert.htm
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Great article. I'm happy to see participation like this on the Classroom Acoustics Coalition page. Are there ASA members in this group?
ReplyDeleteThe ASA S12.60 Standard is being reviewed for revision. I hope the most recent research is being considered. That, from Germany, makes clear that the unwanted noise in a classroom comes from the students, not from the building equipment (unless there is a locomotive in the corner of the room masquerading as an air conditioner). Students, even at their most quiet, generate sound levels of 45 to 55 dB.
This research has not become widely known in the U.S. acoustical community. The ASA acousticians that I know, who wrote ASA S12.60 twelve years ago, have still not recognized or acknowledged it. Its reality, tho,' has major effects on how to design an acoustically superior classroom -- and the findings should be reflected in the revised standard.