deletions | additions       diff --git a/part1d.tex b/part1d.tex  index 5c8cd5d..48bd27f 100644  --- a/part1d.tex  +++ b/part1d.tex 
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\begin{lstlisting}[language=Matlab]  all_frequencies = [697 770 852 941 1209 1336 1477 1633];  ww = 0:pi/10000:pi;  fs = 8000; % Sampling rate is still set at 8000 
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ylabel('Amplitude');  xlabel('Normalized Frequency');  plot(ww, abs(HH)); \end{lstlisting}