Various methods encoding digital information can be used to reduce the size of an original digital recording by eliminating redundant information or information that is viewed as unnecessary or not critical. PCM is not a compressed digital format. Converts a digital bitstream to an analog signal. An abbreviation for decibel . A scale to measure the loudness of sound.
Decibels are a logarithmic scale of relative loudness.
In audio equipment decibels are used to indicate the range of volume from the quietest to the loudest sound that can be handled. The method of representing and storing audio information with numbers. Audio in a digital signal can be represented by many different schemes. One common scheme is PCM . Contrasted with analog .