Parallel pattern verifier with dynamic time warping

Details Parallel pattern verifier with dynamic time warping Parallel pattern verifier with dynamic time warping

1980-07-02

1982-09-07

Nusbaum, Mark E.

G10L 100

Patent

active

043485537

ABSTRACT:
A speech recognition system is disclosed which employs a network of elementary local decision modules for matching an observed time-varying speech pattern against all possible time warpings of the stored prototype patterns. For each elementary speech segment, an elementary recognizer provides a score indicating the degree of correlation of the input speech segment with stored spectral patterns. Each local decision module receives the results of the elementary recognizer and, at the same time, receives an input from selected ones of the other local decision modules. Each local decision module specializes in a particular node in the network wherein each node matches the probability of how well the input segment of speech matches the particular sound segments in the sounds of the words spoken. Each local decision module takes the prior decisions of all preceding sound segments which are input from the other local decision modules and makes a selection of the locally optimum time warping to be permitted. By this selection technique, each speech segment is stretched or compressed by an arbitrary, nonlinear function based on the control of the interconnections of the other local decision modules to a particular local decision module. Each local decision module includes an accumulator memory which stores the logarithmic probabilities of the current observation which is conditional upon the internal event specified by a word to be matched or identifier of the particular pattern that corresponds to the subject node for that particular pattern. For each observation, these probabilities are computed and loaded into the accumulator memory of all the modules and, the result of the locally optimum time warping representing the accumulated score or network path to a node for the word with the highest probability is chosen.

REFERENCES:
patent: 3700815 (1972-10-01), Doddington et al.
patent: 3849762 (1974-11-01), Fujimoto et al.
patent: 4100370 (1978-06-01), Juzuki
patent: 4256924 (1981-03-01), Sakoe
F. Jilinek, "Continuous Speech Recognition," Proc. IEEE, Apr. 1976, pp. 532-538, 556.

Affiliated with

Also associated with

Rating

Parallel pattern verifier with dynamic time warping does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Parallel pattern verifier with dynamic time warping, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parallel pattern verifier with dynamic time warping will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1343410