Web-based speech recognition with scripting and semantic objects

• US 7,366,766 B2
• Filed: 03/23/2001
• Issued: 04/29/2008
• Est. Priority Date: 03/24/2000
• Status: Expired due to Term

• Current Assignee: Eliza Corporation (Gainwell Technologies)
• Original Assignee: Eliza Corporation (Gainwell Technologies)
• Inventors: Kroeker, John, Boulanov, Oleg
• Primary Examiner(s): Flynn; Nathan
• Assistant Examiner(s): SIDDIQI, MOHAMMAD A
• Application Number:
  US09/815,726
• Publication Number:
  US 20020002463A1
• Time in Patent Office: 2,594 Days
• Field of Search: 704/260, 704/251, 704/246, 704/257, 704/258, 704/271, 704/275, 704/9, 704/270, 704/270.1, 709217-219, 709201-203, 719/310
• US Class Current: 709/217
• CPC Class Codes: G06F 40/211 Syntactic parsing, e.g. based on context-free grammar [CFG] or unification grammars
• CPC Class Codes: G06F 40/279 Recognition of textual entities
• CPC Class Codes: G06F 40/30 Semantic analysis
• CPC Class Codes: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: G10L 15/02 Feature extraction for speech recognition; Selection of recognition unit
• CPC Class Codes: G10L 15/14 using statistical models, e.g. Hidden Markov Models [HMMs] G10L15/18 takes precedence
• CPC Class Codes: G10L 15/1815 Semantic context, e.g. disambiguation of the recognition hypotheses based on word meaning
• CPC Class Codes: G10L 15/1822 Parsing for meaning understanding
• CPC Class Codes: G10L 15/28 Constructional details of speech recognition systems
• CPC Class Codes: G10L 15/30 Distributed recognition, e.g. in client-server systems, for mobile phones or network applications
• CPC Class Codes: G10L 2015/228 of application context
• CPC Class Codes: H04M 3/4938 comprising a voice browser which renders and interprets, e.g. VoiceXML

Abstract

The present invention is a system and method for creating and implementing transactional speech applications (SAs) using Web technologies, without reliance on server-side standard or custom services. A transactional speech application may be any application that requires interpretation of speech in conjunction with a speech recognition (SR) system, such as, for example, consumer survey systems. A speech application in accordance with the present invention is represented within a Web page, as an application script that interprets semantic objects according to a context. Any commonly known scripting language can be used to write the application script, such as Jscript, PerlScript, and VBscript. The present invention is “Web-based” to the extent that it implements Web technologies, but it need not include or access the World Wide Web.

Claims

1. A speech application system, comprising:

A. a speech recognition (SR) configured to receive an audio input and generate a context-independent result object representing all possible context-dependent interpretations of said audio input;

B. a speech application script, loaded at the SR system and configured to control said SR system, said application script defining one or more application contexts, said application contexts being represented as categories of interpretation, wherein said application script includes programming code written in a language chosen from a group of scripting languages comprising Jscript, PerlScript, or VBscript; and

C. a result object evaluator, configured to receive said context-independent result object and said one or more application contexts and, as a function thereof, to generate a specific interpretation result corresponding to said audio input, and to return said interpretation result to said application script.

2. A system as in claim 1, wherein one or more of said application script is included in a Web page.

3. A system as in claim 1, wherein said audio input is received from a device chosen from a group comprising:

A. a telephone;

B. a cellular telephone;

C. a personal computer;

D. an application server; and

E. an audio receiver.

4. A system as in claim 1, wherein said audio input is received via a network including one or more wire or wireless networks from a group, comprising:

A. a telephone network;

B. a cellular telephone network;

C. a LAN;

D. a WAN;

E. a virtual private network;

F. the Internet; and

G. the Web.

5. A system as in claim 1, wherein said plurality of valid interpretations of said audio input includes all valid interpretations of said audio input within said context.

6. A system as in claim 1, wherein speech application is chosen from a group of interactive speech applications comprising:

A. consumer survey applications;

B. Web access applications;

C. educational applications, including health education applications and computer-based lesson applications and testing applications;

D. screening applications, including patient screening applications and consumer screening applications;

E. health risk assessment applications;

F. monitoring applications, including heath data monitoring applications and consumer preference monitoring applications;

G. compliance applications, including applications that generate notifications of compliance related activities, including notifications regarding health or product maintenance;

H. test results applications, including applications that provide at least one of lab test results, standardized tests results, consumer product test results, and maintenance results; and

I. linking applications, including applications that link two or more of the applications in parts A through H.

7. A system according to claim 1, further including a set of reusable object oriented interfaces local to the SR system, said interfaces configured to interface said application script with said SR system.

8. A system as in claim 7, wherein one or more of said interfaces are objects exposed via ActiveX facilities.

9. A method of speech recognition (SR), comprising the steps of:

A. receiving an audio input with a SR system and generating a context-independent result object representing all possible context-dependent interpretations of said audio input;

B defining one or more application contexts with an application script, said application contexts being represented as categories of interpretation, said application script defining one or more application contexts, said application contexts being represented as categories of interpretation, wherein said application script includes programming code written in a language chosen from a group of scripting languages comprising Jscript, PerlScript, or VBscript; and

C. receiving said context-independent result object and said one or more application contexts and, as a function thereof, generating a specific interpretation result corresponding to said audio input, and to return said interpretation result to said application script.

10. A method according to claim 9, further including interfacing said application script with the SR system via a set of reusable object oriented interfaces local to the SR system.