Noise

Someone hoped my laptop doesn’t make too much noise after I posted a photo of the Tecra logo on Flickr. The short answer is no, it doesn’t make too much noise. At 10cm from the fan output, I can measure 42 dB when the fan is off and 52dB when it’s on. Beside the fact that I don’t hear that noise when I have my headphones, it was not sufficient for me. I wrote small python and gnuplot scripts to collect and display temperature, fan status and load ( .tar.gz file, 1.3ko). During those 2 hours, I checked my e-mails, read news on the web and wrote the OPML output in catrss (that’s why load averages increase at the end, when I’m debugging the software). Here are the results (click on an image to see a larger version): ...

Since a few days, I am back to my previous laboratory to collect some more samples. While looking after my rats, I measured the noise level with a dBmeter. The conditions are: 8.30 am doors are left open (except in the housing unit) as it is usually the case five samples per room: one in each corner of the room (without moving any furniture) and one in the middle measures taken at ear height device: YF-20 (YFE) ...