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  1. 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 …

  2. Sound Decibel Meter - Sound Level Meter

    Online sound level meter that measure and analyze audio in real time using your device microphone. This tool provide advanced audio analysis with multiple measurement scales, real …

  3. Decibel (dB) | Definition, Formula, & Facts | Britannica

    Oct 31, 2025 · 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.

  4. What Are Decibels, and How Are They Measured? | HowStuffWorks

    Sep 7, 2023 · 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 …

  5. Decibel Magazine | The World’s Foremost Heavy Metal Authority

    Decibel Magazine is America's monthly extreme music magazine delivering in-depth and intelligent coverage to the doorsteps of a legion since 2004.

  6. 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 …

  7. 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 …

  8. What Are Safe Decibels? - Hearing Health Foundation

    The National Institute on Deafness and Other Communication Disorders has an interactive infographic on decibel levels.

  9. 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 …

  10. 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 …