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As mentioned above, I use powerdot for generating overhead
presentations in PDF format from LaTeX source. In this section, I describe
how I make clickable sound links in PDF presentations.
The LATEX macro invocation
\soundexamplewav{Bb Clarinet}{bcq705}
creates a link ``Bb Clarinet'' in the PDF which plays the soundfile
bcq705.wav. The macro \soundexamplewav
is defined as\newcommand{\soundexamplewav}[2]{\href{\playcmd \wavpath{#2}}{#1}}
and \newcommand{\wavpath}[1]{\soundpathroot/wav/#1.wav}
where, for Web documents, I use\newcommand{\playcmd}{} % just use a bare URL, no ``command''
\newcommand{\soundpathroot}[1]{http://ccrma.stanford.edu/~jos/}
while for on-the-road, self-contained laptop presentations, I use instead\newcommand{\soundpathroot}[1]{..}
\newcommand{\playcmd}{run:} % Windows PDF
%\newcommand{\playcmd}{run:play } % Linux PDF
These PDF soundfile links are just like media links in HTML Web pages:
The application registered for ``.wav'' files is launched to
play the sound in the usual way when you click on the link.
Therefore, it is good to find a sound-player that does not insist on
bringing a window to the foreground, since that distracts from the
full-screen presentation mode. For windows, I find WinAmp
(any version) to be perfect for this purpose. For Linux, in Firefox,
go to Edit / Preferences, select the Content tab, select ``File Types
.. Manage...'', and set your soundfile handler there (e.g., a shell
script that invokes the play command installed by
sox).
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