Competing Definitions

  Oversampling  [hits=1 votes=1 rating=5.0] : Sampling Theorem - A signal is said to be START_HTML_TAGIEND_HTML_TAGoversampledSTART_HTML_TAG/IEND_HTML_TAG when the sampling frequency exceeds the signal bandwidth by some finite margin. For example, 2x oversampling means that the sampling rate is double what it needs to be to avoid aliasing in the frequency domain. In audio, the 88.2 kHz is often called 2x oversampling, because the typical audio sampling rate (for compact disks [CDs]) is 44.1 kHz. Mathematically, 2x oversampling is twice the START_HTML_TAGiEND_HTML_TAGminimumSTART_HTML_TAG/iEND_HTML_TAG non-aliasing sampling rate for any given signal. - The sampling interval (or sampling period) of a discrete-time signal is defined as the reciprocal of the sampling rate. Since the sampling rate is normally in units of samples per second (Hz), the sampling interval is normally in units of seconds. See also: sampling rate, sampling theorem - Derivation of the START_HTML_TAGiEND_HTML_TAGsampling theoremSTART_HTML_TAG/iEND_HTML_TAG which states that any signal can be perfectly reconstructed, in principle, from uniformly spaced samples of that signal, provided that the sampling rate is higher than twice the highest frequency present in the signal
  Oversampling  [hits=1 votes=1 rating=5.0] : Oversampling -- from MathWorld