... theorem instatistics. In one form: a sum of many randomnumbers will have a Gaussian pdf, regardless ofthe pdf of the individual random numbers. Cepstrum: A rearrangement of "spectrum." ... compression, 488Precision, 32-34, 68, 72-76Probability, 17-19Probability distribution function (pdf) , 19-24,452-455Probability mass function (pmf), 18, 19-24Quantization error, 36-39Quantization ... response. See under FiltersStereo audio, 362Stopband (defined), 268Stretch, grayscale, 390-391Strong law of large numbers, 18Subpixel interpolation, 395-396Substitution, using complex numbers...