Download and load the file \"sum.mat\" into MATLAB by placing it in your MATLAB

Question

Download and load the file "sum.mat" into MATLAB by placing it in your MATLAB directory and running "load sum;" Let sum denote this signal, which is given as follows: sum[n] = sigma^n_k = n z[k] where z is an audio message. Calculate z within MATLAB and play it using "sound(z, Fs), " where Fs = 11025, l. What is the (well-known) audio message? middotIn MATLAB, let N = length(sum), and define t = (1: N)/Fs. Include the output of: "plot(t, z);" and label: - the x-axis as "Time (seconds)" the y-axis as "Amplitude" - the title as whatever you deem appropriate. What happens when Fs 5000? When Fs 20000?

Explanation / Answer

sum.mat files is not attached to this problem in order to check the ouput of the sound plot for given sampling frequency fs=11025

where sum(n)=z1+z2+z3+..............zn

the plot sound(z,fs)

the value to calultae z is not mentioed in sum.mat file

and N=length(sum);

where sum=summationo of z(k)

and time t=(1:N)/Fs;

the ouput is plotted between plot(t,z);

with the given sampling frequency Fs=5000 and Fs=20000

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