Abstract: Methods and systems consistent with the present invention enroll a candidate phrase uttered by a user in a dictionary having at least one previously enrolled phrase. The system receives utterances of the candidate phrase and determines whether the first utterance is confusingly similar to a previously enrolled phrase and whether they are consistent with each other. The system then enrolls the candidate phrase in the dictionary according to these determinations.

Abstract: A method and a system for extracting character information from a signal matrix of gray level picture elements which compares pixel elements positioned in annular rings around a central pixel of interest to determine neighbor pair occurrences for purposes of eliminating spurious signals and for establishing a threshold for each document read which is used to eliminate undesired signals from the signal matrix.

Abstract: A method and system of matching first and second waveforms, each having identifiable features, for identification purposes. The method includes the steps of obtaining from the first waveforms significant said identifiable features having values and locations with respect to a starting point of the associated said first waveform, with the significant identifiable features being obtained according to the predetermined criteria; utilizing values and locations of the significant identifiable features of a first waveform to search in predetermined locations for anticipated corresponding identifiable features in a second waveform; determining the values and locations of the identifiable features, if any, found in the predetermined locations; and comparing the values and locations from the determining step with the values and locations of the significant identifiable features of a first waveform according to second predetermined criteria to determine whether or not the second waveform matches a first waveform.