About: http://webisa.webdatacommons.org/115358573

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Audio systems which employ a reference or timing signal track with variable delay line compensation for playback speed are shown for example in FIG. 9 of Coleman, Jr.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com