In electronics, the gains of amplifiers, attenuation of signals, and signal-to-noise ratios are often expressed in decibels. The decibel originates from methods used to quantify signal loss in telegraph …

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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 …

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.

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 …

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