Speech recognition system

Details Speech recognition system Speech recognition system

1986-09-02

1989-07-25

Salce, Patrick R.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 45, 3645135, G10L 506

Patent

active

048521728

ABSTRACT:
A speech recognition system for recognizing the words spoken by identified speakers and unidentified speakers, based upon the use of three dimensional, polar coordinate expressions of formant information, which eliminate the differences in word patterns encountered among various speakers, and the content of a reference pattern memory which stores formant information as a reference pattern in polar coordinates. The input speech is subjected to LPC analysis for each of several analysis degrees and the resulting coefficients are time normalized against the reference pattern using a DP matching process, which may be on the basis of city block distances in order to determine the most appropriate analysis degree that represents the input speech.

REFERENCES:
patent: 3989896 (1976-11-01), Reitboeck
patent: 4516215 (1985-05-01), Hakaridani et al.

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