Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1983-03-09
1986-11-18
Kemeny, E. S. Matt
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
3645135, G10L 500
Patent
active
046240080
ABSTRACT:
An apparatus and method for recognition of sentences comprised of utterances separated by short pauses, the utterances representative of both isolated words and connected words. Speech to be recognized is converted into frames of digital signals. Selected ones of the frames of digital signals are compared with isolated word and connected word templates stored in a template memory. Recognition of isolated words is done by comparing the selected frames of digital signals with the isolated word templates in accordance with a windowed dynamic programming algorithm having path boundary control, while connected word recognition is accomplished by comparing selected frames of digital signals with the connected word templates in accordance with a full DPA having path score normalization and utterance frame penalty calculation capability. Variable frame rate encoding is used to identify the selected frames of digital signals. Syntax control includes selecting the isolated word and connected word templates to be compared after each utterance and includes combining the recognized isolated words and connected words into sentences in accordance with the predefined syntax after the end of the sentence has been detected. A logical set of connected words are the connected digits.
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Carlin Lawrence
Nelson Mark W.
Smith A. Richard
Vensko George
International Telephone and Telegraph Corporation
Kemeny E. S. Matt
Morris Jeffrey P.
O'Halloran John T.
Salotto John J.
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