[DVD] DECIBEL

[DVD] DECIBEL

Disc: 1 disc

Age Rating: 12+

Runtime: (01h 50min)

Subtitle: Korean, English

Aspect Ratio: 2.39:1 (16:9)

Synopsis:

The decibel is a relative unit of measurement equal to one tenth of a bel (B). It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of 101/10 or root-power ratio of 101/20.