About: http://webisa.webdatacommons.org/397193224

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 duration of the pulses altering the sound signal in said narrow frequency band is preferably less than about 100 ms, e.g. about 10 ms.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es