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<blockquote data-quote="Rob_the_rich" data-source="post: 459715" data-attributes="member: 8419"><p>22db might be the lowest noise level registered on your meter, it is very quiet. Have you managed to find a place where you can't hear the noise but the meter registers lower than 22db? </p><p></p><p>Same with the spectrograph. You need to be sure of what you are measuring.</p><p></p><p>I foresee a journey in the near future. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="Rob_the_rich, post: 459715, member: 8419"] 22db might be the lowest noise level registered on your meter, it is very quiet. Have you managed to find a place where you can't hear the noise but the meter registers lower than 22db? Same with the spectrograph. You need to be sure of what you are measuring. I foresee a journey in the near future. ;) [/QUOTE]
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