For a file(.wave) • Find the sampling frequency and the number of bits per sample. • Re-quantize the samples using the following methods: o Linear Quantization o A-Law Companding with A=87.6 o μ-Law Companding with μ=255 • Use a mid-rise quantizer with 4, 5, 6, 7, and 8 bits per sample. • Obtain the signal-to-quantization noise ratio (SQNR) for each of the above 15 cases. • It is required to plot the SQNR (dB) versus the number of bits per sample for linear quantization, A-law companding, and μ-law companding. All 3 plots may be on the same figure, if convenient.

DSP_Lab_070.m

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