Point source

For the case of a point source the conditions can be shown to be[5]:

\begin{displaymath}
\mbox{$\mathbf{P}$}(0) =
\left[
\begin{array}{cc}
1/c(0,0,0) & 0 \\
0 & \cos\theta(0)/c(0,0,0)
\end{array} \right]
\end{displaymath}

and[8]

\begin{displaymath}
\mbox{$\mathbf{Q}$}(0) =
\left[
\begin{array}{cc}
0 & 0 \\
0 & 0
\end{array} \right]  ,
\end{displaymath}

where $c(0,0,0)$ stands for sound speed at the source position.



Orlando Camargo Rodríguez 2012-06-21