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SQNR = 10log10 Px/Pq where Px is the power of the unquantized signal x(n).
(a) For f0 = 1/50 and N = 200, write a program to quantize the signal x(n), using truncation, to 64, 128, and 256 quantization levels. In each case plot the signals x(n), xq(n), and e(n) and compute the corresponding SQNR.
(b) Repeat part (a) by using rounding instead of truncation.
(c) Comment on the result obtained in parts (a) and (b).
(d) Compare the experimentally measured SQNR with the theoretical SQNR predicted by formula (1.4.32) and comment on the differences andsimilarities.
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