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<http://webisa.webdatacommons.org/381191160>	<http://www.w3.org/ns/prov#value>	"1228 *Mar 14, 1989Oct 2, 1990U.S. Philips CorporationMethod of and device for encoding a signal, for example a speech parameter such as the pitch, as a function of timeUS5089818 *May 9, 1990Feb 18, 1992French State, Represented By The Minister Of Post, Telecommunications And Space (Centre National D'etudes Des TelecommunicationsMethod of transmitting or storing sound signals in digital form throug" .
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