% Author: Prof. Dr. Matthias Jung, DL9MJ
% Year: 2023
\begin{circuitikz}[european]
    \draw[-Triangle](0.0,0.0) -- (5.0,0.0)  node[right]{$f$ [\unit{\kilo\hertz}]};
    \draw[-Triangle](0.0,0.0) -- (0.0,2.00) node[above left, rotate=90] () {Lautstärke};
    \draw[thick](0.3,0.0) coordinate(c1) -- ++ (0,1.25) coordinate(c3) -- ++ (2.4,-0.5) coordinate(c4) -- (2.7,0) coordinate(c2);
    \draw(c1) node[below, align=center]{Tiefe\\Töne};
    \draw(c2) node[below, align=center]{Hohe\\Töne};
    \draw(c3) node[above right, align=center]{Laut};
    \draw(c4) node[above right, align=center]{Leise};
    \draw(1.5,0.45) node[align=center](){Information\\(Sprache)};
\end{circuitikz}