nelsonic
commented
7 years ago @mk4111 _Yes, agree 100% that human perceptions !== actual noise levels.
**And_ we need to calibrate the sensors to be as accurate as possible,
however I think just _having something**_ which displays the real-time decibel level will be a huge improvement on the current "non-system" where people stand around chatting next to others who are trying to concentrate.
as a "Pre-Alpha-MVP" it might be an idea to do this using HTML5 and the Microphone on a Cheap 2nd Hand Chromebook instead of a RaspberryPi/Arduino ... @jasonpecor appears to have attempted this: https://github.com/jasonpecor/DecibelMeter so we might be able to get some pointers from his work... however https://github.com/jasonpecor/DecibelMeter/issues/6 so... might need some work...
mk4111
One of the issues I'm facing at the moment is trying to figure out the easiest way to overcome the issue of human-perceived loudness !== noise level (because the human audible range doesn't encompass the entire frequency spectrum).
Human-perceived loudness can be measured on a decibelmeter but we need to figure out how we want to do this:
I think the latter makes the application more versatile; we'd be able to recycle the equipment we use for other things; for example, I think it would generally be quite interesting to see (whether there are any) differences in white-noise, with the number of machines in the space!
@nelsonic - please could I ask what your thoughts are on this?