Continuous speech recognition unit using forward probabilities

Details Continuous speech recognition unit using forward probabilities Continuous speech recognition unit using forward probabilities

1989-10-03

1991-07-02

Shaw, Dale M.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 708

Patent

active

050292129

ABSTRACT:
A continuous speech recognition unit using forward probabilities for recognizing continuous speech associated with standard patterns for given units of recognition comprises a standard template memory for storing Markov model standard templates of standard speech, which are composed of state sequences and transition probabilities between the states; an observation probability computing device for computing a forward probability for a feature vector time sequence; and a cumulative value computing device for determining a cumulative value based on the sum of previous cumulative values. The unit further comprises a matching pass memory for storing maximum values produced by the cumulative value computing means and a result processor for determining recognition results indicative of recognized words. The unit stores the transition giving the best probability in memory for each state and traces back the recognition result for the word sequence based on the transitions in memory.

REFERENCES:
patent: 4748670 (1988-05-01), Bahl et al.
patent: 4783804 (1988-11-01), Juang et al.
patent: 4831550 (1989-05-01), Katz
patent: 4852180 (1989-07-01), Levinson
patent: 4881266 (1989-11-01), Nitta et al.

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