Notice the picture of the Sound Level Meter - it's from Radio Shack and meets the standards for Olympia's noise code. It's about as complicated to use as an electronic toothbrush or thermometer.
What this device does is detect vibrations in the air, also known as sound waves, and measures them in a numeric scale (technical discussion on the dB scale and the weighted dBA scale). Though it looks like you aim this gizmo, it doesn't work like a ray gun. It only responds to the level (strength, amplitude) of the sound that is right at the sensor!
Dredge up a memory from science class or from throwing rocks into a pool and remember that waves, whether sound waves or water waves, get smaller or quieter the further we go from the source. You'll see the relevance in the next slides...
Now the BIG question is:
WHERE do you use it to take a measurement??
What this device does is detect vibrations in the air, also known as sound waves, and measures them in a numeric scale (technical discussion on the dB scale and the weighted dBA scale). Though it looks like you aim this gizmo, it doesn't work like a ray gun. It only responds to the level (strength, amplitude) of the sound that is right at the sensor!
Dredge up a memory from science class or from throwing rocks into a pool and remember that waves, whether sound waves or water waves, get smaller or quieter the further we go from the source. You'll see the relevance in the next slides...
Now the BIG question is:
WHERE do you use it to take a measurement??
Sensor
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