Multi-context conversational environment system and method

a conversation environment and multi-context technology, applied in the field of speech recognition, can solve the problems of lost navigation through the system so far, and achieve the effect of facilitating development and maintenan

Inactive Publication Date: 2005-12-29
NUANCE COMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] The present invention is directed to providing a multi-contextual speech application environment wherein several applications can be activated at the same time, thereby enabling the user to switch between applications at will while maintaining each application context. A control manager starts up applications, monitors speech for specific “control words” or “control phrases”, and switches control among applications. Each application is independent of other applications, interacting with the control manager but not directly interacting with other applications, thereby leading to ease of development and maintenance because the first application does not need to be aware of the existence of other active applications.

Problems solved by technology

If a user abandons the process before completion, the navigation through the system so far is lost and the user must start again at the top of the call flow.

Method used

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Overview

[0013] Speech recognition systems have been developed in many parts of the world and, although it is difficult to describe a standard recognition system architecture, some characteristics are shared between many of them. A typical speech recognition system, of the type depicted in FIG. 1, generally comprises a device such as a microphone or telephone set 101 that converts a spoken utterance into an electric signal and transmits the signal to a speech recognition unit 100. The speech recognition unit 100 can be split into two functional blocks: a processing unit 102 and a search unit 104. The processing unit 102 is an acoustic processor that performs the segmentation, the normalization, and the parameterization of the input signal waveform. In some cases, especially for connected word speech, this stage may also include a feature extraction operation. The search unit 104 includes a speech recognition dictionary that is scored in order to find possible matches to the spoken ...

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Abstract

An interactive speech-activated information retrieval application for use in automated telephone systems includes a control manager that interfaces between the caller's speech input and applications and enables several applications to be open at the same time. The control manager continually monitors for control words, enabling the user to switch between applications at will. When a user switches to another application, the control manager suspends the first application and stores its context, enabling the user to later return to the application at the point where the application was previously suspended.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation application and claims priority to U.S. patent application Ser. No. 09 / 870,202, filed May 30, 2001, entitled “Multi-Context Conversational Environment System And Method”, which is hereby incorporated by reference in its entirety.FIELD OF THE INVENTION [0002] The present invention relates in general to speech recognition and, more particularly, to interactive speech applications for use in automated telephone assistance systems. BACKGROUND OF THE INVENTION [0003] Computer-based interactive speech applications are widely used in telephone systems to answer incoming calls as well as to perform various tasks including gathering information from callers, providing information to callers, and connecting callers with appropriate parties. Typically, the call flow is activated when the system receives an incoming call, and begins with a system-generated greeting followed by a list of available options. The appl...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G10L15/22G10L15/26H04M3/493
CPCH04M3/4936G10L2015/228
Inventor BUSAYAPONGCHAI, SENISCHINTRAKULCHAI, PICHET
Owner NUANCE COMM INC
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