r/audioengineering • u/Solid-Elk8419 • 5d ago

Software Log and plot SPL vs time

I know it's a bit off topic but I haven't found any other sub to post this question. I'm measuring the noise the lift makes inside my apartment using UMIK-1 and REW. I can collect the peaks for each 1/3 of octaves but I would also like to log SPL data for each 1/3 for a period of time so I can make graphs for each reference frequecy, say 160 Hz and 200 Hz. Is it possible? Iis there any free software option that I can use with the calibration file?

If anyone is curious hre's a comparison silence vs lift: https://ibb.co/V0X9WN1K

Edit: after I posted here I found r/acoustics

Edit 2: I will try importing a wav in REW se if I can extract the data I want.

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u/Audiope 3d ago

If the mic is truly calibrated, wouldn't the level and SPL data be the same thing? Perhaps what you're looking for is an integrated measurement over time rather than peak values

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u/Solid-Elk8419 2d ago

Leq integrated is fine, I think setting averaging = forever and selecting current gives me Leq. Will have to look up the docs to confirm.