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A sound 1,000 times more powerful than near total silence is 30 dB. A sound 100 times more powerful than near total silence is 20 dB. It's a logarithmic scale, so a sound 10 times more powerful is 10 dB. Two signals whose levels vary by one decibel have a power ratio of 101/10. A logarithmic quantity in decibels is called a level. It is used to exhibit the ratio of one value of a power or root-power quantity to another on a logarithmic scale.
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We won’t cover the generic details of decibels because they are already available on this page of the AAC Electric Circuits textbook. On the decibel scale, the smallest audible sound (near total silence) is 0 dB. On a logarithmic scale, however, the changes between two values are based on multiplication (or orders of magnitude). The decibel (symbol: dB) is a relative unit of measurement equivalent to one-tenth of a bel (B). In simple terms, the decibel is a logarithmic ratio between two values a measured and a reference value. Trending Questions What is the difference between a fire and a wild fire? What are non-examples of Irrigation? How hot is 39 degrees Celsius in Fahrenheit? Who comes first O'mally or Omaan? What are examples of rollers? Will the pH of carbonated drinks increase over time Why? How many ml 1 mlg? Why 4 feet 8. It’s a logarithmic unit that provides a convenient way of referring to ratios, such as the ratio between the amplitudes of an input signal and an output signal.