초록 ▼

A waveform recognition system including a plurality of detectors of features having the combined presence at a plurality of instants spaced at predetermined intervals relative to each other in time of instantaneous amplitudes each satisfying respectively predetermined constraints; apparatus for assi

A waveform recognition system including a plurality of detectors of features having the combined presence at a plurality of instants spaced at predetermined intervals relative to each other in time of instantaneous amplitudes each satisfying respectively predetermined constraints; apparatus for assigning a plurality of labels and corresponding confidence measures to each of successive portions of the waveform in dependence on the features detected in the portions and storing each label in a buffer corresponding to the rank of the confidence with which the label is assigned relative to other labels assigned to the same portion of data and apparatus for outputting labels from that buffer containing labels assigned with the highest confidence whose confidence measures are in a predetermined relationship with those of adjacent labels in the same buffer when the confidence measures of labels in other buffers containing labels assigned with confidence measures of lower rank satisfy predetermined conditions.

대표청구항 ▼

Speech recognition apparatus comprising: (a) input means for receiving, in successive overlapping temporal portions, an electrical signal containing speech data; (b) a feature detection device responsive to said electrical signal over a temporal portion thereof for detecting the presence of a plural

Speech recognition apparatus comprising: (a) input means for receiving, in successive overlapping temporal portions, an electrical signal containing speech data; (b) a feature detection device responsive to said electrical signal over a temporal portion thereof for detecting the presence of a plurality of predetermined features within said portion; and (c) decision means for indicating recognition of elements of speech, each said element corresponding to the presence of a predetermined combination of said detected features, the said decision means including: (i) assignment means for assigning a label corresponding to one of said elements of speech to each said portion in dependence on the features detected therein, together with a corresponding confidence measure indicating the degree of confidence in the correctness of the assignment of that label; (ii) an output buffer connected to said assignment means for storing values corresponding to a plurality of said successive portions forming a temporal array, said values comprising, for each said portion, timing information defining the relative position in time of that portion, and the label and corresponding confidence measure assigned to that portion; and (iii) output means for indicating recognition of an element of speech, by outputting from said output buffer the labels and timing information for those portions in said array whose corresponding successive confidence measures define local maxima in said array.