About: http://webisa.webdatacommons.org/159443257

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	The base band signal for the modulated signal or the audio frequency signal is in the form of pulse train, which has the edge-to-edge intervals expressed as 317.5???n ??s where n is a positive integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com