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3 results for “loudness”

Formulae (3)

\beta = 10\log_{10}\frac{I}{I_0}

Loudness in decibels relative to threshold.

L = 10 \log_{10}\!\left(\frac{I}{I_0}\right)

Sound intensity expressed in decibels relative to the hearing threshold.

\Delta L = 10\,\text{dB}

A 10 dB increase is heard as roughly twice as loud.