The warped LP for audio analysis-synthesis.
a. Write a MATLAB program to perform analysis-synthesis using $i$ ) the conventional LP, and $i$ ) the warped LP. Use Ch4Au8.wav as the input wave file.
b. Perform a tenth-order LP analysis, and use a 5-bit scalar quantizer to quantize the LP and the WLP coefficients and a 3-bit scalar quantizer for the excitation vector. Perform audio synthesis using the quantized LP and WLP analysis parameters. Compute the warping coefficient [Smit99] [Harm01] using
$$
\lambda=1.0674\left(\frac{2}{\pi} \arctan \left(\frac{0.06583 F_s}{1000}\right)\right)^{1 / 2}-0.1916,
$$
where $F_s$ is the sampling frequency of the input audio. Comment on the quality of the synthesized audio from the LP and WLP analysis-synthesis. Repeat this step for Ch4Au16.wav. Refer to [Harm00] for implementation of WLP synthesis filters.