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decibel    音标拼音: [d'ɛsəb,ɛl]

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  • Decibel - Wikipedia
    The decibel originates from methods used to quantify signal loss in telegraph and telephone circuits
  • Levels Of Noise In Decibels (dB) Level Comparison Chart
    To express levels of sound meaningfully in numbers that are more manageable, a logarithmic scale is used, rather than a linear one This scale is the decibel scale A noise level chart showing examples of sounds with dB levels ranging from 0 to 180 decibels
  • What Are Decibels, and How Are They Measured? - HowStuffWorks
    Decibels (abbreviated dB) are the units used to measure the relative intensity of a sound The decibel unit of measurement is a little odd because the human ear is incredibly sensitive The human ear can hear everything from your fingertip brushing lightly over your skin to a loud jet engine
  • Decibel (dB) | Definition, Formula, Facts | Britannica
    A decibel (dB) is a unit for expressing the ratio between two amounts of electric or acoustic power or for measuring the relative loudness of sounds
  • What is a decibel (dB)? - RapidTables. com
    Decibel (Symbol: dB) is a logarithmic unit that indicates ratio or gain Decibel is used to indicate the level of acoustic waves and electronic signals The logarithmic scale can describe very big or very small numbers with shorter notation
  • How To Understand The Unit Of Decibels (Simple explanation)
    A decibel (dB) is a unit used to measure the intensity or power level of sound or signal It represents the logarithmic ratio between the measured value and a reference value, typically the threshold of human hearing
  • Decibel - The Engineering ToolBox
    The decibel is a logarithmic unit used to describe the ratio of a signal level - like power, intensity or amplitude - to a reference level Decibel is a dimensionless value of relative ratios The signal units depends on the nature of the signal - can be W for power
  • DECIBEL Definition Meaning - Merriam-Webster
    The unit for measuring the relative intensities of sound is called a decibel Because the decibel scale is logarithmic, a sound with an intensity that is twice that of a reference sound corresponds to an increase of little more than 3 decibels
  • Decibels (dB): The Only 5 Things You (Probably) Need to Know
    The decibel compares two numbers that differ by many digits and represents the ratio of those numbers with a smaller, simpler number Decibels are especially useful when comparing numbers that vary by several orders of magnitude
  • What Is a Decibel? Explaining the Meaning and Scale
    The decibel provides a relative measure of sound by comparing it against a reference point, which is the faintest sound the average human ear can detect This system allows for consistent communication about sound levels





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