Quote:
Double K
There are many video's on youtube where they use decibel meters and compare the reports....
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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
https://pewscience.com is where you want to read about accurate testing of silencers.
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