Mar. 29th, 2009

sajego: (Default)

Another work trip
Originally uploaded by sajego

First gorgeous day at home since February and I spent it traveling. There was even snow on the ground here to greet me. How nice!

I’m in the great state of Illinois to do some acoustical testing for our insulation research project. The material is very good fire insulation but we need to know how it does with sound too. I’ve done a dozen fire tests now but this is my first acoustic test. I find it a comfortable area though since I’m familiar with decibels and frequency charts. Instead of speech recognition we test transmission, ie sound passing through it and absorption, ie how it stops sound bouncing around.

I’m not sure what the sounds sound like yet. I’d guess some high tech noise of many frequencies, but maybe they do it at various frequencies separately. (Maybe I should do my homework tonight and read the test
 procedure.)

Originally published at Sarasera. You can comment here or there.

December 2011

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