Apparatus and method for recognizing speech

Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system

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3645135, G10L 500, G10L 106, G06F 1534

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active

048688797

ABSTRACT:
In a speech recognition system for effecting substantially linear matching, a start point of an input speech pattern is detected to start counting the frames of the input speech pattern for updating a speech frame number. Each time the speech frame number is updated, a plurality of frame numbers of reference templates are generated in substantially a linear relationship to the frame number, thus providing a plurality of matching paths between each of the reference templates and the input speech pattern. The distance between the input pattern data and the reference template data between the corresponding frames specified by each matching path is calculated each time the speech frame number is updated. An accumulated value of the distances along a matching path from the start point of the input speech until a desired speech frame is regarded as a dissimilarity, and the dissimilarity corresponding to each matching path in each reference template is calculated each time the speech frame is updated. The number of the reference template which gives a minimum dissimilarity is detected and stored. At the time of confirming an end of the input speech, the number of the reference template with the minimum dissimilarity is determined to be the recognized result of input speech.

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The Journal of the Acoustical Society of America: Program of the 104th Meeting. Supplement 1, vol. 72, Fall 1982. Published by the American Institute of Physics for the Acoustical Society of America.
"A Single-Chip Speaker Independent Voice Recognition System", Makoto Morito, Kozo Yamada, Akihkio Fujisawa & Masao Takeuchi; ICASSP 86, Tokyo; copyright 1986 IEEE; Reprinted from Proceedings of IEEE-IECEJ-ASJ International Conference on Acoustics, Speech, and Signal Processing, Apr. 7-11, 1986.

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