I$)$ Voice$-$Code Breaker: You will receive a corrupted voice data file that contains a voice code consisting of several digits which can be anything from $0$ to $9.$ For example, your code may be $756.$ Each digit sound $($say $7$ or $5$ or $6)$ is represented by $16,000$ samples. First find how many digits are there in your voice$-$code. This can be simply done by dividing the number of samples in your voice$-$code by $16000.$ Suppose you find that there are $n$ digits in your voice$-$code. Your next task is to identify each digit using mathematical operations. To do this, we will provide you with $10$ different files, each corresponding to digits $0$ to $9.$ Let us call each such file a template file. This means you have $10$ template files. You then find the magnitude of the inner product of each of the templates with the first digit $($out of $n$ digits$)$ of your voice$-$code. Choose the template that gives the maximum magnitude of inner product. Decide this as the first digit. Repeat this procedure for all the remaining $(n-1)$ digits to decode your complete voice$-$code. After you have completed the mathematical decoding, use audioplayer in MATLAB to listen to your voice$-$code. You have to provide the following to your TA as the final outcome of this project: $(1)$ your MATLAB code, $(2)$ the decoded voice$-$code numbers and the magnitude of the inner$-$products that you obtained, $(3)$ demonstrate using audioplayer to your TA$,$ and $(4)$ two figures: one containing the plot of the first $1000$ samples of the first digit and the other containing the first $1000$ samples of the corresponding template digit that you have identified. $[40$ points$]$