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Combined display of all available logs of Helpful. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).
- 17:23, 22 October 2022 Helpful talk contribs deleted page Decibel meter notes (content was: "<!-- Typically: * electret condenser mircophone * 30ish to 4kHz or 8kHz or such (is most of the range relevant to hearing damage) * speed: integrate over ~125m..." (and the only contributor was "Helpful"))