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Sones phons loudness decibel sone 0.2 - 0.3 - 0.4 - 0.5 - 0.6 define sone rating conversion dB level dBA phon phone volume intensity calculator dB dBa and Sone relate fan
![The Decibel Scale Sound Level Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 86147303. The Decibel Scale Sound Level Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 86147303.](https://previews.123rf.com/images/b44022101/b440221011709/b44022101170900048/86147303-the-decibel-scale-sound-level.jpg)
The Decibel Scale Sound Level Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 86147303.
![The Decibel Scale Sound Level Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 86147302. The Decibel Scale Sound Level Royalty Free SVG, Cliparts, Vectors, And Stock Illustration. Image 86147302.](https://previews.123rf.com/images/b44022101/b440221011709/b44022101170900047/86147302-the-decibel-scale-sound-level.jpg)