Representing Sounds

Analogue - A form of signal that can take any value between the lowest and the highest. Sound is like this.

Digital - A form of signal that is either on or off. Computer music files must be digital.

MP3 MPEG-1 or MPEG-2 - a digital audio encoding format which uses lossy data compression. A common standard for digital music.

Sampling - The process of capturing data about the sound at intervals.

Sample size - The number of bit available for each audio sample

Sampling Frequency  - The number of audio signals to digital data 

Sampling Intervals - The time between each sample