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decibel    音标拼音: [d'ɛsəb,ɛl]

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  • Decibel - Wikipedia
    The decibel may be defined by the statement that two amounts of power differ by 1 decibel when they are in the ratio of 10 0 1 and any two amounts of power differ by N decibels when they are in the ratio of 10 N(0 1)
  • 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
  • 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
  • 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
  • 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
  • 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
  • Understanding the Decibel dB - Formula, Definition, Calculations
    The deciBel is widely used for measuring sound intensity or sound pressure level For this the sound is referred to a pressure of 0 0002 microbars which equates to the standard for the threshold of hearing
  • 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
  • 6. 3: Decibels and sound levels - Physics LibreTexts
    This page covers the measurement of sound levels using the decibel (dB) scale and explains sound intensity level (SIL) and sound pressure level (SPL) as interchangeable concepts
  • How to Read Decibels and What the Numbers Mean
    Decibels can seem confusing, but a few simple rules make them easy to understand, read, and use in everyday life





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