Continuous speech pattern recognizer

Details Continuous speech pattern recognizer Continuous speech pattern recognizer

1981-03-27

1983-08-23

Kemeny, Emanuel S.

Boots, shoes, and leggings

179 1SD, G10L 100

Patent

active

044007884

ABSTRACT:
This speech recognizer concatenates a string of reference isolated-words for comparison with the unknown string of connected-words. The invention includes a level-building (LB) algorithm, "level" implying a location in a sequence of words. A constrained endpoint dynamic-time-warp algorithm, in which the slope of the warping function is restricted between 1/2 and 2, is used to find the best alignment between an unknown continuous-word test pattern, and a concatenated sequence of L reference patterns. Properties of the LB algorithm include: modification of the references; back-track decision logic; heuristic selection of multiple candidates, and syntax constraints. As a result, the processing required is less than two-level dynamic-program-matching and sampling algorithms.

REFERENCES:
patent: 4049913 (1977-09-01), Sakoe
patent: 4059725 (1977-11-01), Sakoe
patent: 4092493 (1978-05-01), Rabiner et al.
patent: 4156868 (1979-05-01), Levinson
Itakura, "Minimum Prediction Residual Applied to Speech Recognition," IEEE Trans. on Acoustics etc., Feb., 1975, pp. 67-72.
Rabiner, "Considerations in Dynamic Time Warping . . . ", IEEE Trans. on Acoustics, etc., Dec., 1978, pp. 575-582.
Design Engineering, "Microprocessor Basics: Part 24", Electronic Design, Feb. 15, 1979, pp. 128-139.

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