05802251 is referenced by 94 patents and cites 30 patents.

A method and system are disclosed for reducing perplexity in a speech recognition system within a telephonic network based upon determined caller identity. In a speech recognition system which processes input frames of speech against stored templates representing speech, a core library of speech templates is created and stored representing a basic vocabulary of speech. Multiple caller-specific libraries of speech templates are also created and stored, each library containing speech templates which represent a specialized vocabulary and pronunciations for a specific geographic location and a particular individual. Additionally, the caller-specific libraries of speech templates are preferably processed to reflect the reduced bandwidth, transmission channel variations and other signal variations introduced into the system via a telephonic network. The identification of a caller is determined upon connection to the network via standard caller identification circuitry and upon detection of a spoken utterance, that utterance is processed against the core library, if the caller's identity cannot be determined, or against a particular caller-specific library, if the caller's identity can be determined, thereby greatly enhancing the efficiency and accuracy of speech recognition by the system.

Title
Method and system for reducing perplexity in speech recognition via caller identification
Application Number
175707
Publication Number
5802251
Application Date
September 5, 1995
Publication Date
September 1, 1998
Inventor
Jorge L Vizcaino
Parkland
FL, US
Elton B Sherwin Jr
Stamford
CT, US
John M Lucassen
New York
NY, US
Paul S Cohen
Yorktown Heights
NY, US
Agent
Andrew J Dillon
Richard A Tomlin
Assignee
International Business Machines Corporation
NY, US
IPC
G10L 3/00
View Original Source