alt.hn

4/16/2026 at 6:39:03 PM

Show HN: Online Sound Decibel Meter

https://soundmeterx.com/

by artiomyak

4/16/2026 at 10:25:55 PM

Having tried a number of these online loudness meters in the past, without using some reference calibration, it's likely going to give you pretty inconsistent results out of the box. (the site does have a calibration offset)

I've got three sites open, one shows 55 dBA, another shows 30 dBA, this one shows 35 dBA, and my actual physical Sound Level Meter shows 45 dBA.

by vunderba

4/16/2026 at 8:40:42 PM

Seems to work. What do you imagine is the main use case?

by jmagland

4/17/2026 at 5:49:41 AM

At least, to play around with and learn about decibels levels. I found out that when I sneeze, my laptop perceives it as 70db.

The website also have a microphone and a speaker test. They have some interesting use cases, mentioned on the website.

P.S. The UI is awesome. Is it written with flutter? Also, I'd love to be able to better control the frequency slider in microphone test. Either via logarithmic scale, or via "+" & "-" buttons, or via text field to set a frequency manually.

by curiousvlad