将 TikZ 中的矩阵块拆分为两个块，是否有可能或者有更好的方法来绘制此图？

Question 1

另一种选择，略有不同伊格纳西答案。主要特点：

仅使用两种节点样式：block带有最小宽度选项并根据该选项计算文本宽度，以及，这几乎与MWE 中的block_dash相同block_large
veclen顶部和底部块的宽度由库计算calc
块之间的连接使用语法edge定义的标签。quotes
从代码的所有行中删除空节点，如果计划稍后在其中添加一些文本，那么我建议使用边标签，因为它们用于节点之间的连接block。

妇女权利委员会：

\documentclass[tikz, border=2mm]{standalone}
\usetikzlibrary{arrows, calc, decorations.pathmorphing,
                positioning, quotes}
\tikzset{
     block/.style = {draw, rounded corners, very thick,
           minimum width=#1, minimum height=2em, inner sep=2.5pt, outer sep=0pt, 
           text width =\pgfkeysvalueof{/pgf/minimum width}-2*\pgfkeysvalueof{/pgf/inner xsep},
           align=center},
block_dash/.style = {draw, dashed, rounded corners, thin, 
            inner sep=1.5pt, minimum size=2em,
            execute at begin node={\begin{varwidth}{88mm}},
            execute at end node={\end{varwidth}}},
 connector/.style = {-stealth',very thick},
 snakeline/.style = {decorate,
            decoration={snake, amplitude=.4mm, segment length=2mm,
                        pre length=2mm, post length=2mm},
            thick, gray, -stealth'},
            }% end of tikzset

\usepackage{varwidth, mathtools}

\begin{document}
    \begin{tikzpicture}[%scale=0.1, 
    auto,
    node distance=15mm and 0mm]
\node (B1) [block=21mm]         {Split this matrix block into two small blocks.};
\node (B2) [block=21mm,
            right=22mm of B1]   {Split this matrix block into two small blocks.};
\path   let \p1 = ($(B1.west)-(B2.east)$),
            \n1 = {veclen(\x1,\y1)} in
        node (B3) [block=\n1, 
                   above right=of B1.north west]   {Text here}
        node (B4) [block=\n1,%,
         below right=of B1.south west]   {Text here};
%
\draw[connector]    ($(B3.north)+(0,1)$) node[left] {$x(n)$}    -- (B3);
\draw[connector]    
        (B3.south -| B1) edge ["$y^{}_\text{s}$" ', "Something here"]  (B1)
        (B3.south -| B2) edge ["$y^{}_\text{s}$" ', "Something here"]  (B2)
        (B1) edge ["$y^{}_\text{s}$" ', "Something here"]  (B1 |- B4.north);
%
\draw[snakeline]    
        (B2.east) -- + (2,0) node[block_dash,right] {Text to the left of it here};
\draw[snakeline]    
        (B3.east) -- + (2,0) node[block_dash,right] {Text to the left of it here};
\draw[snakeline]    
        (B4.east) -- + (2,0) node[block_dash,right] {Text to the left of it here};
    \end{tikzpicture}
\end{document}

这使：

附录： 作为对在您的问题中添加我的代码的回应。您的修改不符合 Cewry 规范。缺少前言（\documentclass{...}和必要的包），在\tikzset}...}添加的定义后缺少逗号，并且添加的定义包含许多多余的选项。更正此问题后，我按正确的代码顺序重新排列您的修改并添加您的新请求（我不确定我是否理解正确）。获得的结果是：

和 MWE：

\documentclass[]{article}
\usepackage{geometry}% <-- added for inserting images, had to be before package `tikz`
\usepackage[demo]{graphicx}% <-- in real document remove option `demo`
\usepackage{tikz}
\usetikzlibrary{arrows, calc, decorations.pathmorphing,
                positioning, quotes}
\tikzset{
every edge quotes/.style = {% <-- added for writing edge label in more lines
            font=\small\linespread{.8}\selectfont,
            text=black, align=left},
     block/.style = {draw, rounded corners, very thick,
           minimum width=#1, minimum height=2em, inner sep=2.5pt, outer sep=0pt,
           text width =\pgfkeysvalueof{/pgf/minimum width}-2*\pgfkeysvalueof{/pgf/inner xsep},
           align=center},
block_dash/.style = {draw, dashed, rounded corners, thin,
            inner sep=1.5pt, minimum size=2em, text=black,
            execute at begin node={\begin{varwidth}{9cm}},
            execute at end node={\end{varwidth}}},
block_noborder/.style = {text width=#1, align=left, % <-- renamed and removed surplus options
            text=black, inner sep=1.5pt},
 connector/.style = {-stealth',very thick},
 snakeline/.style = {decorate,
            decoration={snake, amplitude=.4mm, segment length=1.5mm,
                        pre length=2mm, post length=2mm},
            thick, gray, -stealth'},
              }% end of tikzset

\usepackage{varwidth, mathtools}
\usepackage{siunitx}% <-- added for correct writing of units

\begin{document}
\centering
    \begin{tikzpicture}[%scale=0.1,
    auto,
    node distance=15mm and 0mm]
\node (B31) [block=21mm]         {Split this matrix block into two small blocks.};
\node (B32) [block=21mm,
            right=5mm of B31]   {Split this matrix block into two small blocks.};
\path   let \p1 = ($(B31.west)-(B32.east)$),
            \n1 = {veclen(\x1,\y1)} in
        node (B2) [block=\n1,
                   above right=of B31.north west]  {Half-wave Rectifier}
        node (B1) [block=\n1,
                   above=of B2]   {Gammatone and Outer-middle Ear Filter}
        node (B4) [block=\n1,%,
         below right=of B31.south west]   {Text here};
%
\draw[connector]    
    ($(B1.north)+(0,1)$) node[left] {$x(n)$} -- (B1)
    (B1) to ["$y^{}_\text{s}$" ', "Something\\ here"]  (B2); 
    \coordinate[below=11mm of B2.south] (B33); % <-- auxiliary coordinates, for orthogonal paths between `box` nodes
    \coordinate[below=4mm of B32.south-|  B4] (B34);
\draw[connector]
        (B2) to ["$y^{}_\text{s}$" ', "Something\\ here"]    (B33) -| (B31);
\draw[connector]    (B33) -| (B32);
\draw[connector]
        (B31) edge ["$y^{}_\text{s}$" ', "short\\ text\\ only"]   (B31 |- B4.north)
        (B32) |- (B34) to ["$y^{}_\text{s}$" ', "Something\\ here"]   (B4);
%
\draw[snakeline]
        (B32.east) -- + (0.7,0) node[block_dash,right] {Text to the left of it here. Text to the left of it here.Text to the left of it here.Text to the left of it here};
\draw[snakeline] % <-- this part of code is rewrite from scratch
        (B1.east) -- + (0.7,0) node (s1) [block_noborder=0.35\textwidth,right] {%
           \includegraphics[width=\hsize, trim = 1.55cm 1.4cm 0 0, clip] {spectral/figures/FilterResponseMiddleEar.pdf}}
                                node (s2) [block_noborder=0.25\textwidth,right=of s1] {%
                                            $N_c=300$ channels, \\
                                            $f_{\text{s}}^{}=\SI{12000}{Hz}$.};
\draw[snakeline]
        (B4.east) -- + (0.7,0) node[block_dash,right] {Text to the left of it here};
    \end{tikzpicture}
\end{document}

附录（2）：

根据（我希望如此）最后一个请求，我相应地更改了第二个示例。我还借此机会更改了边缘标签定义。现在多行标签的行间垂直空间更小了。

Answer