Patents Assigned to Adacel, Inc.
  • Publication number: 20170125011
    Abstract: A method and system for improving the accuracy of a speech recognition system using word confidence score (WCS) processing is introduced. Parameters in a decoder are selected to minimize a weighted total error rate, such that deletion errors are weighted more heavily than substitution and insertion errors. The occurrence distribution in WCS is different depending on whether the word was correctly identified and based on the type of error. This is used to determine thresholds in WCS for insertion and substitution errors. By processing the hypothetical word (HYP) (output of the decoder), a mHYP (modified HYP) is determined. In some circumstances, depending on the WCS's value in relation to insertion and substitution threshold values, mHYP is set equal to: null, a substituted HYP, or HYP.
    Type: Application
    Filed: January 13, 2017
    Publication date: May 4, 2017
    Applicant: Adacel, Inc.
    Inventor: Chang-Qing Shu
  • Patent number: 9583094
    Abstract: A method and system for improving the accuracy of a speech recognition system using were confidence score (WCS) processing is introduced. Parameters in a decoder are selected to minimize a weighted total error rate, such that deletion errors are weighted more heavily than substitution and insertion errors. The occurrence distribution in WCS is different depending on whether the word was correctly identified and based on the type of error. This is used to determine thresholds in WCS for insertion and substitution errors. By processing the hypothetical word (HYP) (output of the decoder), a mHYP (modified HYP) is determined. In some circumstances, depending on the WCS's value in relation to insertion and substitution threshold values, mHYP is set equal to: null, a substituted HYP, or HYP.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 28, 2017
    Assignee: ADACEL, INC.
    Inventor: Chang-Qing Shu
  • Publication number: 20170011737
    Abstract: A method and system for improving the accuracy of a speech recognition system using were confidence score (WCS) processing is introduced. Parameters in a decoder are selected to minimize a weighted total error rate, such that deletion errors are weighted more heavily than substitution and insertion errors. The occurrence distribution in WCS is different depending on whether the word was correctly identified and based on the type of error. This is used to determine thresholds in WCS for insertion and substitution errors. By processing the hypothetical word (HYP) (output of the decoder), a mHYP (modified HYP) is determined. In some circumstances, depending on the WCS's value in relation to insertion and substitution threshold values, mHYP is set equal to: null, a substituted HYP, or HYP.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Applicant: Adacel, Inc.
    Inventor: Chang-Qing Shu
  • Patent number: 9478218
    Abstract: A method and system for improving the accuracy of a speech recognition system using word confidence score (WCS) processing is introduced. Parameters in a decoder are selected to minimize a weighted total error rate, such that deletion errors are weighted more heavily than substitution and insertion errors. The occurrence distribution in WCS is different depending on whether the word was correctly identified and based on the type of error. This is used to determine thresholds in WCS for insertion and substitution errors. By processing the hypothetical word (HYP) (output of the decoder), a mHYP (modified HYP) is determined. In some circumstances, depending on the WCS's value in relation to insertion and substitution threshold values, mHYP is set equal to: null, a substituted HYP, or HYP.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: October 25, 2016
    Assignee: Adacel, Inc.
    Inventor: Chang-Qing Shu
  • Patent number: 8417526
    Abstract: One or more embodiments include a speech recognition learning system for improved speech recognition. The learning system may include a speech optimizing system. The optimizing system may receive a first stimulus data package including spoken utterances having at least one phoneme, and contextual information. A number of result data packages may be retrieved which include stored spoken utterances and contextual information. A determination may be made as to whether the first stimulus data package requires improvement. A second stimulus data package may be generated based on the determination. A number of speech recognition implementation rules for implementing the second stimulus data package may be received. The rules may be associated with the contextual information. A determination may be made as to whether the second stimulus data package requires further improvement.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: April 9, 2013
    Assignee: Adacel, Inc.
    Inventor: Francois Bourdon
  • Publication number: 20100106505
    Abstract: A method and system for improving the accuracy of a speech recognition system using word confidence score (WCS) processing is introduced. Parameters in a decoder are selected to minimize a weighted total error rate, such that deletion errors are weighted more heavily than substitution and insertion errors. The occurrence distribution in WCS is different depending on whether the word was correctly identified and based on the type of error. This is used to determine thresholds in WCS for insertion and substitution errors. By processing the hypothetical word (HYP) (output of the decoder), a mHYP (modified HYP) is determined. In some circumstances, depending on the WCS's value in relation to insertion and substitution threshold values, mHYP is set equal to: null, a substituted HYP, or HYP.
    Type: Application
    Filed: October 24, 2008
    Publication date: April 29, 2010
    Applicant: Adacel, Inc.
    Inventor: Chang-Qing Shu
  • Publication number: 20080201148
    Abstract: A system and method for generating dynamic grammars for use by a speech recognition system in response to signals from sensors indicative of the position and/or movement of a vehicle or platform, such as an aircraft or helicopter.
    Type: Application
    Filed: February 15, 2007
    Publication date: August 21, 2008
    Applicant: ADACEL, INC.
    Inventor: Daniel Desrochers
  • Publication number: 20080114603
    Abstract: A system and method for confirming command or speech recognition results returned by an automatic speech recognition (ASR) engine from a command issued by an operator of a vehicle or platform, such as an aircraft or unmanned air-vehicle (UAV). The operator transmits a command signal to the ASR engine, initiated by an activation means, such as a push-button (formally known as push-to-talk or push-to-recognize). A recognition result is communicated to the user and the system awaits the confirmation for a limited period of time. During this period, in one embodiment, a low tone with high prosody is played to notify the user that the system is ready to receive the confirmation. If the user quickly presses and releases the push-button a predetermined number of times (for instance, twice to make a double-click), the result is confirmed and the ASR forwards a command signal to a system controlled thereby. Otherwise, the ASR waits for another speech command.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 15, 2008
    Applicant: Adacel, Inc.
    Inventor: Daniel Desrochers