About: http://webisa.webdatacommons.org/233609440

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 tone groups of claim 22 wherein the first pitch is at least 1500 Hz, and second pitch is a lower frequency to enhance hearing of the second pitch by a user with a deficit in high frequency hearing sensitivity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com