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Logarithmic scale: dB scale

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Now Playing:Logarithmic scale db scale– Example 1
Examples
  1. A piano playing (65dB) is __________ times as loud as a whisper (30dB).
    What is a logarithm?
    Jump to:NotesPrerequisitesRelated
    Notes
    This time, we will bridge the gap between physics and mathematics by studying another application of logarithmic functions. We will learn about the dB Scale and explore how this logarithmic scale can be used to compare the loudness of sounds.
    dB scale (loudness of sounds)
    I1I2=10(dB1−dB210) {{I_1}\over{I_2}} = 10 ^ {({{dB_1 - dB_2}\over10})}