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Old July 10, 2021, 04:33 PM   #8
dogtown tom
Senior Member
Join Date: January 23, 2006
Location: Plano, Texas
Posts: 2,885
Double K
There are many video's on youtube where they use decibel meters and compare the reports....
Take those videos with a grain of salt....or half a grain.
If the tests is run with anything other than a B&K 2209, Pulse or Impulse then it doesn't meet MILSTD.

Cell phone sound meter apps and consumer grade sound meters are fine for measuring continuous noise levels like a jet engine or rock concert, but aren't capable of measuring to the MILSTD standards.

Pew Science is where you want to read about accurate testing of silencers.
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