\begin{tikzpicture}
\node[draw=white] (input) at (0,0){\includegraphics[width=0.62\textwidth]{./Chapter17/Figures/figure-hello-audio.png}};
\node[anchor=east,font=\scriptsize,align=center]  (a1) at  ([xshift=2.0em]input.west) {音频数据输入};
\node[minimum width=17.4em,minimum height=2.9em,draw=white,line width=3pt] at (0.3em,-0.02em){};

\node[anchor=north,draw,rounded corners=2pt,minimum width=16em, minimum height=2.2em,fill=yellow!20] (box) at ([xshift=0.4em]input.south){};
\node[anchor=west,minimum width=1.2em,minimum height=2.2em] (w1) at ([xshift=0.2em]box.west){{h}};
\node[anchor=west,minimum width=1.2em,minimum height=2.2em] (w2) at ([xshift=0.2em]w1.east){{e}};
\node[anchor=west,minimum width=1.2em,minimum height=2.2em] (w3) at ([xshift=0.2em]w2.east){{e}};
\node[anchor=west,minimum width=1.2em,minimum height=2.2em] (w4) at ([xshift=0.2em]w3.east){{$\epsilon$}};
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\node[anchor=west,minimum width=1.2em,minimum height=2.2em] (w11) at ([xshift=0.2em]w10.east){{!}};

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\node[anchor=north,minimum width=1.2em,minimum height=1.4em,fill=gray!30] at ([yshift=-3.8em]w11.south){};

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\node[anchor=north,font=\scriptsize,align=center] (a2) at  ([yshift=-1.4em]a1.south) {预测字母序列};
\node[anchor=north,font=\scriptsize,align=center] (a3) at  ([yshift=-1.8em]a2.south) {合并重复字母 \\ 并丢弃$\epsilon$};
\node[anchor=north,font=\scriptsize,align=center] (a4) at  ([yshift=-0.6em]a3.south) {最终结果输出};
\end{tikzpicture}