A convenient way of measuring sound intensity is in units of decibels. Decibels measure the ratio of a given sound intensity to the threshold of hearing intensity. This threshold of hearing intensity is given a value of 0 decibels (0 dB). The dynamic range of hearing is usually considered between between the threshold of hearing (0dB) and the threshold for pain (130dB). This range represents a 1013 (10X10X10…13 times!) variation in sound pressure!