Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1987-03-17
1990-01-23
Harkcom, Gary V.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 41, G10L 708
Patent
active
048963585
ABSTRACT:
An automatic speech recognition system employs parallel syntaxes with a first syntax operative to compare keyword templates with incoming speech over a given time interval and with a second syntax in parallel with the first and operative to compare filler templates with incoming speech over the same interval. Based on the best comparisons in each syntax a likelihood probability ratio is computed and compared against a selected threshold for determining whether the speech contains a valid phrase or keyword as compared to an undesirable utterance.
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Bahler Lawrence G.
Higgins Alan L.
Harkcom Gary V.
ITT Corporation
Knepper David D.
Twomey Thomas N.
Werner Mary C.
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