Chapter Heading like this book, using memoir class

Question

I would like to re-create the following style using the memoir class

I made a .cls file with

\chapterstyle{veelo} \renewcommand*{\printchaptername}{} \renewcommand{\chapnumfont}{\normalfont\sffamily} \renewcommand{\chaptitlefont}{\normalfont\Huge\sffamily\bfseries}

and I get

Can you please tell me how I can modify the code to get the closest to the first picture? Thanks!!!

Answer 1

First version

\documentclass{memoir}
\usepackage{xcolor}


% chapter style %%%%%%%%%%%%%%%%
\renewcommand{\printchaptername}{}
\renewcommand{\printchapternum}{%
\makebox[0pt][l]{\chapnumfont \thechapter}%
\textcolor{gray}{\rule[7mm]{1.5cm}{4mm}}%
\hspace{-1.5cm}%
\rule[-3mm]{1.5cm}{2mm}%
}
\renewcommand{\afterchapternum}{}
\renewcommand{\chapnumfont}{\chaptitlefont}
\renewcommand{\chaptitlefont}{\normalfont\Huge\sffamily\bfseries}

% section style %%%%%%%%%%%

\setsecheadstyle{
\textcolor{gray}{\rule[4mm]{1.75cm}{2mm}}%
\hspace{-1.75cm}%
\rule[-2mm]{1.75cm}{1mm}%
\hspace{-1.75cm}%
\normalfont\Large\sffamily\bfseries
}



\begin{document}

\chapter{Noise in oscillators}

\section{Introduction}

\end{document}

Second version

\documentclass{memoir}
\usepackage{xcolor}


% chapter style %%%%%%%%%%%%%%%%
\renewcommand{\printchaptername}{}
\renewcommand{\printchapternum}{}
\renewcommand{\afterchapternum}{}
\renewcommand{\chapnumfont}{\chaptitlefont}
\renewcommand{\chaptitlefont}{\hfill\normalfont\Huge\sffamily\bfseries}
\renewcommand{\afterchaptertitle}{%
\makebox[0pt][l]{\chapnumfont \thechapter}%
\textcolor{gray}{\rule[7mm]{1.5cm}{4mm}}%
\hspace{-1.5cm}%
\rule[-3mm]{1.5cm}{2mm}
\par\nobreak\vskip \afterchapskip
}

% section style %%%%%%%%%%%

\setsecheadstyle{
\textcolor{gray}{\rule[4mm]{1.75cm}{2mm}}%
\hspace{-1.75cm}%
\rule[-2mm]{1.75cm}{1mm}%
\hspace{-1.75cm}%
\normalfont\Large\sffamily\bfseries
}



\begin{document}

\chapter{Noise in oscillators}

\section{Introduction}

\end{document}