Telephonic communications – Audio message storage – retrieval – or synthesis – Multilingual system or operation
Patent
1990-08-10
1992-06-23
Brown, Thomas W.
Telephonic communications
Audio message storage, retrieval, or synthesis
Multilingual system or operation
379189, 379199, 381 42, 381 43, G10L 908, H04M 166
Patent
active
051250225
ABSTRACT:
The present invention describes a method for recognizing alphanumeric strings spoken over a telephone network wherein individual character recognition need not be uniformly high in order to achieve high string recognition accuracy. Preferably, the method uses a processing system having a digital processor, an interface to the telephone network, and a database for storing a predetermined set of reference alphanumeric strings. In operation, the system prompts the caller to speak each character of a string, beginning with a first character and ending with a last character. Each character is then recognized using a speaker-independent voice recognition algorithm. The method calculates recognition distances between each spoken input character and the corresponding letter or digit in the same position within each reference alphanumeric string. After each character is spoken, captured and analyzed, each reference string distance is incremented and the process is continued, accumulating distances for each reference string, until the last character is spoken. The reference string with the lowest cumulative distance is then declared to be the recognized string.
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Hunt Alan K.
Schalk Thomas B.
Brown Thomas W.
Judson David H.
VCS Industries, Inc.
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