About 445,000 results
Open links in new tab
  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. Decibel® HRMS Solution

    Decibel uses cookies to store information about user preferences, to record user-specific information on which pages the site user accesses or visits, and to personalize or customize …

  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. Decibels are part of many questions in the question pools for all three Amateur Radio license classes and are widely used throughout radio and electronics. This tutorial provides …

  6. 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 …

  7. 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. It …

  8. 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 …

  9. DECIBEL Definition & Meaning - Merriam-Webster

    Dec 8, 2016 · 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 …

  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 …