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1. The amplitude of a random signal uniformly distributed between - 5 V and 5 V If the signal to quantization noise ratio required in uniformly quantizing the signal is 4.5dB, the step size of the quantization is approximately
(A): 0.0333 V
(B): 0.05 V
(C): 0.0667 V
(D): 0.10 V
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