I downloaded Sound Meter - Decibel meter & Noise Meter for android by Tools Dev. I put my phone on top of the machine, and breathed through the mask for a couple of minures. Here's my results:
The noisy machine was 53 dB min, 57 dB avg, 63 dB max
The new machine is 42 dB min, 53 dB Avg, 61 dB max -- I still think it is louder than the machine I had for the free trial.
I am wondering if anyone else has measured their machine with an app, and, if so, what are your results (please include your machine type).
Thanks!
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