Automatic speech recognizer for real time operation

Details Automatic speech recognizer for real time operation Automatic speech recognizer for real time operation

1984-11-07

1988-11-08

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

G10L 506

Patent

active

047838094

ABSTRACT:
A speech recognizer identifies an unknown utterance as a variable length string of stored reference patterns in a single pass through the time frame sequence of utterance feature signals. A plurality of reference pattern levels are used to permit strings of varying lengths. As each utterance time frame portion is received, its acoustic feature signals are time registered with the reference pattern feature signals at each reference pattern level to form reference pattern endframe registration path and registration path correspondence signals. Responsive to the plurality of level reference pattern end frame registration path signals, reference pattern strings are selected for the current utterance frame. The utterance is identified as the selected reference string with the best correspondence to the utterance from the registration path signals of the reference levels of the last utterance time frame.

REFERENCES:
patent: 4049913 (1976-11-01), Sakoe
patent: 4059725 (1976-12-01), Sakoe
patent: 4156868 (1979-05-01), Levinson
patent: 4400788 (1983-08-01), Myers et al.
Bridle, Brown and Chamberlain, "An Algorithm for Connected Word Recognition", Proceedings of Intn'l. Conf. on Acoustics, Speech and Signal Processing, 1982, pp. 899-902.
Bell System Technical Journal, vol 60, No. 7, Part 2, Sep. 1981.
Stephen Morse, The 8086-8088 Primer, 2nd Edition, 1980.

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