\begin{tikzpicture} 
\begin{axis}[
axis lines*=middle,
enlargelimits = true,
ymin=-0.5,
ymax=1.2,
xmin=-5,
xmax=5,
axis line style={->,>=stealth},
xlabel={\Huge $n$},
%ylabel={\Huge $\mathrm{sinc}[n]$},
yticklabel style = {yshift=0.2cm},
xticklabel style = {yshift=-0.1cm},
every axis x label/.style={
	at={(ticklabel* cs:1)},
	anchor=north,
},
every axis y label/.style={
	at={(ticklabel* cs:1)},
	anchor=south,
},
%xtick=\empty,
ytick=\empty,
xtick=\empty,
%xtick={-3.14, -1, 1, 3.14},
%xticklabels={$-\pi$, $-\omega_c$, $\omega_c$, $\pi$},
%xmajorgrids,
%ymajorgrids,
every outer y axis line/.append style={white!15!black},
every y tick label/.append style={font=\color{white!15!black}},
legend style={draw=white!15!black,fill=white,legend cell align=left}]

\addplot[ycomb, mark=*, fill=white, mark options={scale=1.5, fill=white}, line width=1.5pt] coordinates {(-5, 0.1) (-4, 0.4) (-3, 0.8) (-2, 1.2) (-1, 1.05) (0, 0.9) (5, 0.1) (4, 0.4) (3, 0.8) (2, 1.2) (1, 1.05)};

\addplot[smooth, black!20, line width=1pt] coordinates {(-5, 0.1) (-4, 0.4) (-3, 0.8) (-2, 1.2) (-1, 1.05) (0, 0.9) (1, 1.1)  (2, 1.2) (3, 0.8) (4, 0.4) (5, 0.1)};
\end{axis}
\end{tikzpicture}
