<https://www.elcircuit.com/2011/04/usb-soundcard-circuit-with-pcm2702.html>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://www.elcircuit.com/2011/04/usb-soundcard-circuit-with-pcm2702.html>