The decibel scale is a logarithmic measurement used to express the intensity of sound. It quantifies sound levels relative to a reference point, typically the threshold of hearing, which is defined as 0 decibels (dB). Each increase of 10 dB represents a tenfold increase in sound intensity, meaning that a sound at 30 dB is ten times more intense than one at 20 dB. This scale is commonly used in various fields, including acoustics, audio engineering, and telecommunications. For example, everyday sounds range from a whisper at about 30 dB to a rock concert, which can reach levels of 120 dB or more. Understanding the decibel scale helps in assessing sound exposure and its potential impact on hearing health.