| A signal is said to be oversampled 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 minimum non-aliasing sampling rate for any given signal. — Click for https://ccrma.stanford.edu/~jos/mdft/Sampling_Theorem.html |
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dB)
oversampling in time).
