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Q1) A compressor with characteristic given below precedes a uniform mid-tread quantizer as shown in the following. The input-output relation of the uniform quantizer is given by the following table. (a) Obtain the input-output description for the non-uniform quantizer as in the table. (b) Compute output of the non-uniform quantizer for samples 1.62,-0.62,-0.53, -1.10, 0.87, -2.30, 1.75, -0.76, 0.32, -0.25. Hint: Consider that input-output relation of a uniform quantizer is as follows: Range Level [a, b) q Accordingly, function of a non-uniform quantizer is briefly: Compressed range Level Range [c, d) [a, b) 9 Compressor 3.5 2.5 Input Output Z 0 1.25 |Input| Range Quantizer output [-3.5, -2.5) -3 [-2.5, -1.5) -2 [-1.5, -0.5) -1 n [-0.5, 0.5 0 [0.5, 1.5) 1 [1.5, 2.5) 2 [2.5, 3.5) 3 The characteristic of a mid-tread quantizer. Output 3.5 Mid-tread quantizer Nonuniform quantizer Compres- sor