<div dir="ltr">A short but good introduction:<br><br><a href="http://artsites.ucsc.edu/EMS/Music/tech_background/TE-14/teces_14.html">http://artsites.ucsc.edu/EMS/Music/tech_background/TE-14/teces_14.html</a><br><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature">-- Emanuele Rusconi<br></div></div>
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