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| Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc... |
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| Rotary Tech - General Rotary Engine related tech section.. Tech section for general Rotary Engine... This includes, building 12As, 13Bs, 20Bs, Renesis, etc... |
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06-03-2011, 10:31 AM
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#11 |
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Still Building my FD
Join Date: Jun 2009
Location: Pasco, WA
Posts: 255
Rep Power: 17  |
80db would be about 25% of the volume to the human ear as 100db. technically speaking, an increase of 3db is doubling the acoustic output, but it takes about a 10db increase to double the volume perceived by the human ear.
At least, this is my rudimentary understanding of the concept.
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Uh.... hi. |
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