thesis/thesis.tex: Elaborating a little on the VBAP section.

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@@ -313,6 +313,13 @@ parskip=never]{paper}
 
       \subsubsection{Vector Based Amplitude Panning}
         \label{subsubsec:vbap}
+        \gls{vbap} is another rendering method for multiple loudspeakers. Up to
+        three loudspeakers are used to reproduce a virtual sound source in a
+        three-dimensional setup, while only two are needed in a horizontal one.\\
+        It enables for “virtual source positioning in a three-dimensional sound
+        field formed by loudspeakers in an arbitrary three-dimensional
+        placement“, while being ”computationally efficient and accurate“
+        \citep[p. 464]{VillePulkki1997-05-31}.
 
       \subsubsection{Wave Field Synthesis}
         \label{subsubsec:wavefieldsynthesis}