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codec2
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sinusoidal encoder block diagram

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drowe67 2023-11-24 07:47:23 +10:30 committed by David Rowe
parent 17a30f0d6a
commit f95b5902bb
2 changed files with 25 additions and 7 deletions
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doc/codec2.tex
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@ -51,13 +51,6 @@ pinstyle/.style = {pin edge={to-,thin,black}}
\draw (#1,#2-0.25) -- (#1,#2+0.25);
}
% tikz: draw a multiplier
\newcommand{\drawMultiplier}[2]{% x, y
\draw (#1,#2) circle (0.5);
\draw (#1-0.25,#2-0.25) -- (#1+0.25,#2+0.25);
\draw (#1-0.25,#2+0.25) -- (#1+0.25,#2-0.25);
}
\maketitle
\section{Introduction}
@ -341,6 +334,31 @@ There is nothing particularly unique about this pitch estimator or it's performa
\subsection{Sinusoidal Analysis and Synthesis}
\begin{figure}[h]
\caption{Block Diagram of the Sinusoidal Encoder}
\label{fig:encoder}
\begin{center}
\begin{tikzpicture}[auto, node distance=2cm,>=triangle 45,x=1.0cm,y=1.0cm, align=center]
\node [input] (rinput) {};
\node [tmp, right of=rinput,node distance=0.5cm] (z) {};
\node [block, right of=z,node distance=1.5cm] (window) {Window};
\node [block, right of=window,node distance=2.5cm] (dft) {DFT};
\node [block, right of=dft,node distance=3cm,text width=2cm] (est) {Est Amp and Phase};
\node [block, below of=window] (nlp) {NLP};
\node [output, right of=est,node distance=2cm] (routput) {};
\draw [->] node[align=left,text width=2cm] {$s(n)$} (rinput) -- (window);
\draw [->] (z) |- (nlp);
\draw [->] (window) -- node[below] {$s_w(n)$} (dft);
\draw [->] (dft) -- node[below] {$S_\omega(k)$} (est);
\draw [->] (nlp) -| node[below] {$\omega_0$} (est) ;
\draw [->] (est) -- (routput) node[right] {$\{A_m\}$ \\ $\{\theta_m\}$};
\end{tikzpicture}
\end{center}
\end{figure}
\subsection{LPC/LSP based modes}
\subsection{Codec 2 700C}