4. The input to a uniform n-bit quantizer is the periodic triangular waveform shown below, which has a period of T = 4 seconds, and an amplitude that varies between +A and -A volt. Derive an expression for the signal-to-noise ratio (in decibels) at the output of the quantizer. Note that the power of this signal is P, A2/3. {3 Marks} m(1) =