Sample Rate Definition - What is Sample Rate?
In audio production the sample rate is the number of samples (or snapshots taken) per second obtained by a digital audio device. This measurement is expressed in hertz (Hz) or in thousands of hertz (kHz). Using this method, the standard sampling rate of a Compact Disc (CD) recording, which is 44,100 times per second would be expressed as 44100 Hz or 44.1 KHz. There is a trade off (which is sometimes reaches a point of diminishing returns for the particular audio use case) because increasing the sample rates generally increases the digital file size.