Information stored as a series of ones and zeroes is called digital information. Humans perceive information in analogue; digital devices estimate this information using ones and zeroes. This estimation, known as sampling, is the process of storing the information in a tiny slice of time. This could be several times per second, and while it is imperceptible to the human ear or eye, there is a tiny gap between two segments of information. A typical audio CD would be sampled at 44.1 KHz (44,100 samples per second) with a bit depth of 16 bits. This is a high-quality estimation of the audio signal, and provides a level of audio quality that sounds good to the ear. The major advantage with digital data is that it is much easier to copy, edit, and move without loss in quality.