The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2005
Filed:
Mar. 22, 2001
Fumio Amano, Kawasaki, JP;
Fumio Amano, Kawasaki, JP;
Fujitsu Limited Kawasaki, Kawasaki, JP;
Abstract
A voice encoding method includes the steps of encoding a first frame that contains a plurality of voice data into encoded parameters, locally decoding the encoded parameters of the first frame into a second frame, performing a plurality of interpolation recovery processes that generate respective frames approximating to the first frame by using a frame or frames other than the first frame, comparing the second frame with the frames approximating to the first frame generated by the plurality of interpolation recovery processes, calculating a signal to noise ratio of each of the frames approximating to the first frame by treating the second frame as the signal, determining an index number that indicates an interpolation recovery process which provides a highest signal to noise ratio, and multiplexing and transmitting the index number with the encoded parameters.