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Apparatus and method for verifying speech

A technology of discourse and words, applied in the field of verification of oral passwords and sentences, can solve problems such as non-compliance and controversial solutions, and achieve low-complexity effects

Inactive Publication Date: 2004-11-17
NUANCE COMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Similar solutions to problems and disputes can be found elsewhere that do not work in the way we would like

Method used

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  • Apparatus and method for verifying speech
  • Apparatus and method for verifying speech
  • Apparatus and method for verifying speech

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Embodiment Construction

[0016] According to at least one preferred embodiment of the present invention, it is acceptable to use an utterance verification system in the functional configuration of at least two user registrations. These two functional configurations are shown in the figure 1 and figure 2 , and explained below.

[0017] in with figure 1 In the associated first configuration, a password is selected by the user, such as by selecting or specifying a number string, etc., and its text form can be passed to the system. Thus the lexical transcription of the password begins to be known. On this point, for demonstration purposes, figure 1 A decoding diagram with a modified branch structure is shown with empty arcs.

[0018] The decoder preferably implements a Viterbi search using a word finite state grammar (FSG) that imposes constraints on the search space inside the lattice. Viterbi search is a search for selecting an optimal path from many paths through a lattice structure given some w...

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Abstract

The present invention relates to methods and apparatus for verifying spoken passwords and sentences with small decoder complexity requirements. A proposed method permits the verbal verification of a spoken password sentence without computationally extensive large-vocabulary decoding. A decoder preferably uses target baseforms (representing the original content to be verified) together with a special set of competing simplified baseforms that may be easily constructed using finite-state grammars (FSG).

Description

technical field [0001] The present invention generally relates to methods and apparatus for verifying spoken passwords and sentences. Background technique [0002] Among the various technologies and products that have emerged in recent years, the concept of acceptance and rejection of verbal discourse is gradually gaining popularity. For example, one technology that is widely accepted and used by the public is automated dialing telephones, in which when a key word or key phrase is spoken, such as "Mom," "Office," "Dr. Smith," etc., a The appropriate phone number corresponding to the keyword / phrase is automatically dialed, so that the user does not have to remember the phone number or look it up. Compared with the keypad-type memory-based dialing system that dials a frequently used number by pressing one or a few buttons, the essential advantage of this system is that this simplicity requires neither consciously looking up the phone number nor Need to keep it in mind. Othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F15/00G06F21/32G10L15/08G10L15/10G10L15/12G10L15/14G10L15/18G10L15/28G10L17/00
CPCG10L2015/088G10L15/187G10L15/01G10L15/22
Inventor 尤潘德拉·V·查德哈里斯蒂芬尼·H·梅斯吉里·纳夫拉特
Owner NUANCE COMM INC
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