Patents by Inventor Rathinavelu Chengalvarayan

Rathinavelu Chengalvarayan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180254037
    Abstract: Systems, methods, and computer-readable storage devices are for identifying a user profile for speech recognition. The user profile is selected from one of several user profiles which are all associated with a speaker, and can be selected based on the identity of the speaker, the location of the speaker, the device the speaker is using, or other relevant parameters. Such parameters can be hierarchical, having multiple layers, and can also be dependent or independent from one another. Using the parameters identified, the user profile is selected and used to recognize speech.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Inventor: Rathinavelu CHENGALVARAYAN
  • Patent number: 9966063
    Abstract: Systems, methods, and computer-readable storage devices are for identifying a user profile for speech recognition. The user profile is selected from one of several user profiles which are all associated with a speaker, and can be selected based on the identity of the speaker, the location of the speaker, the device the speaker is using, or other relevant parameters. Such parameters can be hierarchical, having multiple layers, and can also be dependent or independent from one another. Using the parameters identified, the user profile is selected and used to recognize speech.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: May 8, 2018
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Rathinavelu Chengalvarayan
  • Publication number: 20170213547
    Abstract: Systems, methods, and computer-readable storage devices are for identifying a user profile for speech recognition. The user profile is selected from one of several user profiles which are all associated with a speaker, and can be selected based on the identity of the speaker, the location of the speaker, the device the speaker is using, or other relevant parameters. Such parameters can be hierarchical, having multiple layers, and can also be dependent or independent from one another. Using the parameters identified, the user profile is selected and used to recognize speech.
    Type: Application
    Filed: April 10, 2017
    Publication date: July 27, 2017
    Inventor: Rathinavelu CHENGALVARAYAN
  • Patent number: 9620106
    Abstract: Systems, methods, and computer-readable storage devices are for identifying a user profile for speech recognition. The user profile is selected from one of several user profiles which are all associated with a speaker, and can be selected based on the identity of the speaker, the location of the speaker, the device the speaker is using, or other relevant parameters. Such parameters can be hierarchical, having multiple layers, and can also be dependent or independent from one another. Using the parameters identified, the user profile is selected and used to recognize speech.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 11, 2017
    Assignee: AT&T Intellectual Property I, L.P.
    Inventor: Rathinavelu Chengalvarayan
  • Patent number: 9564120
    Abstract: A method of and system for speech synthesis. First and second text inputs are received in a text-to-speech system, and processed into respective first and second speech outputs corresponding to stored speech respectively from first and second speakers using a processor of the system. The second speech output of the second speaker is adapted to sound like the first speech output of the first speaker.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: February 7, 2017
    Assignee: General Motors LLC
    Inventors: Jeffrey M. Stefan, Gaurav Talwar, Rathinavelu Chengalvarayan
  • Publication number: 20160035346
    Abstract: Systems, methods, and computer-readable storage devices are for identifying a user profile for speech recognition. The user profile is selected from one of several user profiles which are all associated with a speaker, and can be selected based on the identity of the speaker, the location of the speaker, the device the speaker is using, or other relevant parameters. Such parameters can be hierarchical, having multiple layers, and can also be dependent or independent from one another. Using the parameters identified, the user profile is selected and used to recognize speech.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 4, 2016
    Inventor: Rathinavelu CHENGALVARAYAN
  • Patent number: 9245526
    Abstract: A speech recognition method includes receiving a nametag utterance, decoding the nametag utterance to recognize constituent subwords of the nametag utterance, determining the number of subwords in the nametag utterance, and associating the nametag utterance with one or more of a plurality of different nametag clusters based on the number of subwords in the nametag utterance. According to preferred aspects of the method, a confusability check is performed on the nametag utterance within the cluster(s) associated with the nametag utterance, stored nametags are received from memory by decoding the nametag utterance within the cluster(s) associated with the nametag utterance, and the stored nametags are played back by cluster.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: January 26, 2016
    Assignee: General Motors LLC
    Inventor: Rathinavelu Chengalvarayan
  • Patent number: 9210249
    Abstract: A dialing mode of a telematics unit in a vehicle is controlled by monitoring for dialing digits from a vehicle occupant, determining whether the type of dialing digits are continuous dialing digits or discrete dialing digits, establishing a continuous mode for receiving continuous dialing digits or a discrete mode for receiving discrete dialing digits based on the determination, and if the type of dialing digits changes, switching the established mode.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: December 8, 2015
    Assignee: General Motors LLC
    Inventors: Michael A. Wuergler, Sherri J. Voran-Nowak, Rathinavelu Chengalvarayan, Gaurav Talwar
  • Patent number: 9177557
    Abstract: A system and method for providing speech recognition functionality offers improved accuracy and robustness in noisy environments having multiple speakers. The described technique includes receiving speech energy and converting the received speech energy to a digitized form. The digitized speech energy is decomposed into features that are then projected into a feature space having multiple speaker subspaces. The projected features fall either into one of the multiple speaker subspaces or outside of all speaker subspaces. A speech recognition operation is performed on a selected one of the multiple speaker subspaces to resolve the utterance to a command or data.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: November 3, 2015
    Assignee: GENERAL MOTORS LLC.
    Inventors: Gaurav Talwar, Rathinavelu Chengalvarayan
  • Patent number: 9082414
    Abstract: A method and system of speech synthesis. A text input is received in a text-to-speech system and, using a processor of the system, the text input is processed into synthesized speech which is established as unintelligible. The text input is reprocessed into subsequent synthesized speech and output to a user via a loudspeaker to correct the unintelligible synthesized speech. In one embodiment, the synthesized speech can be established as unintelligible by predicting intelligibility of the synthesized speech, and determining that the predicted intelligibility is lower than a minimum threshold. In another embodiment, the synthesized speech can be established as unintelligible by outputting the synthesized speech to the user via the loudspeaker, and receiving an indication from the user that the synthesized speech is not intelligible.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: July 14, 2015
    Assignee: General Motors LLC
    Inventors: Gaurav Talwar, Rathinavelu Chengalvarayan
  • Publication number: 20140302895
    Abstract: A dialing mode of a telematics unit in a vehicle is controlled by monitoring for dialing digits from a vehicle occupant, determining whether the type of dialing digits are continuous dialing digits or discrete dialing digits, establishing a continuous mode for receiving continuous dialing digits or a discrete mode for receiving discrete dialing digits based on the determination, and if the type of dialing digits changes, switching the established mode.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Inventors: Michael A. Wuergler, Sherri J. Voran-Nowak, Rathinavelu Chengalvarayan, Gaurav Talwar
  • Patent number: 8787977
    Abstract: A dialing mode of a telematics unit in a vehicle is controlled by monitoring for dialing digits from a vehicle occupant, determining whether the type of dialing digits are continuous dialing digits or discrete dialing digits, establishing a continuous mode for receiving continuous dialing digits or a discrete mode for receiving discrete dialing digits based on the determination, and if the type of dialing digits changes, switching the established mode.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: July 22, 2014
    Assignee: General Motors LLC
    Inventors: Michael A. Wuergler, Sherri J. Voran-Nowak, Rathinavelu Chengalvarayan, Gaurav Talwar
  • Patent number: 8762151
    Abstract: Methods of automatic speech recognition for premature enunciation. In one method, a) a user is prompted to input speech, then b) a listening period is initiated to monitor audio via a microphone, such that there is no pause between the end of step a) and the beginning of step b), and then the begin-speaking audible indicator is communicated to the user during the listening period. In another method, a) at least one audio file is played including both a prompt for a user to input speech and a begin-speaking audible indicator to the user, b) a microphone is activated to monitor audio, after playing the prompt but before playing the begin-speaking audible indicator in step a), and c) speech is received from the user via the microphone.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: June 24, 2014
    Assignee: General Motors LLC
    Inventors: John J. Correia, Gaurav Talwar, Xufang Zhao, Rathinavelu Chengalvarayan
  • Patent number: 8756062
    Abstract: A method of generating proxy acoustic models for use in automatic speech recognition includes training acoustic models from speech received via microphone from male speakers of a first language, and adapting the acoustic models in response to language-independent speech data from female speakers of a second language, to generate proxy acoustic models for use during runtime of speech recognition of an utterance from a female speaker of the first language.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: June 17, 2014
    Assignee: General Motors LLC
    Inventors: Gaurav Talwar, Rathinavelu Chengalvarayan
  • Patent number: 8688451
    Abstract: A speech recognition method includes receiving input speech from a user, processing the input speech using a first grammar to obtain parameter values of a first N-best list of vocabulary, comparing a parameter value of a top result of the first N-best list to a threshold value, and if the compared parameter value is below the threshold value, then additionally processing the input speech using a second grammar to obtain parameter values of a second N-best list of vocabulary. Other preferred steps include: determining the input speech to be in-vocabulary if any of the results of the first N-best list is also present within the second N-best list, but out-of-vocabulary if none of the results of the first N-best list is within the second N-best list; and providing audible feedback to the user if the input speech is determined to be out-of-vocabulary.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: April 1, 2014
    Assignee: General Motors LLC
    Inventors: Timothy J. Grost, Rathinavelu Chengalvarayan
  • Patent number: 8626506
    Abstract: A method for dynamic nametag scoring includes receiving at least one confusion table including at least one circumstantial condition wherein the confusion table is based on a plurality of phonetically balanced utterances, determining a plurality of templates for the nametag based on the received confusion tables, and determining a global nametag score for the nametag based on the determined templates. A computer usable medium with suitable computer program code is employed for dynamic nametag scoring.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: January 7, 2014
    Assignee: General Motors LLC
    Inventors: Rathinavelu Chengalvarayan, John J. Correia
  • Patent number: 8600741
    Abstract: A system and method for tuning a speech recognition engine to an individual microphone using a database containing acoustical models for a plurality of microphones. Microphone performance characteristics are obtained from a microphone at a speech recognition engine, the database is searched for an acoustical model that matches the characteristics, and the speech recognition engine is then modified based on the matching acoustical model.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: December 3, 2013
    Assignee: General Motors LLC
    Inventors: Gaurav Talwar, Rathinavelu Chengalvarayan, Jesse T. Gratke, Subhash B. Gullapalli, Dana B. Fecher
  • Patent number: 8600760
    Abstract: A speech recognition method includes the steps of receiving input speech containing vocabulary, processing the input speech with a grammar to obtain N-best hypotheses and associated parameter values, and determining whether a first-best hypothesis of the N-best hypotheses is confusable with any vocabulary within the grammar. The first-best hypothesis is accepted as recognized speech corresponding to the received input speech if the first-best hypothesis is not determined to be confusable with any vocabulary within the grammar. Where the first-best hypothesis is determined to be confusable, at least one parameter value of the first-best hypothesis can be compared to at least one threshold value, and accepting the second-best as the recognized speech, if its confidence score is within certain lower and upper threshold values and is not confusable with the first-best.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: December 3, 2013
    Assignees: General Motors LLC, GM Global Technology Operations LLC
    Inventors: Timothy J. Grost, Rathinavelu Chengalvarayan, Jason W. Clark, Edward Abeska
  • Patent number: 8560313
    Abstract: A method of and system for transient noise rejection for improved speech recognition. The method comprises the steps of (a) receiving audio including user speech and at least some transient noise associated with the speech, (b) converting the received audio into digital data, (c) segmenting the digital data into acoustic frames, and (d) extracting acoustic feature vectors from the acoustic frames. The method also comprises the steps of (e) evaluating the acoustic frames for transient noise on a frame-by-frame basis, (f) rejecting those acoustic frames having transient noise, (g) accepting as speech frames those acoustic frames having no transient noise and, thereafter, (h) recognizing the user speech using the speech frames.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: October 15, 2013
    Assignee: General Motors LLC
    Inventors: Gaurav Talwar, Rathinavelu Chengalvarayan
  • Patent number: 8532674
    Abstract: A method of operating a vehicle telematics unit includes determining the location of a vehicle equipped with a vehicle telematics unit; determining if telematics dialing software operated by the vehicle telematics unit includes a verbal dialing protocol used at the determined vehicle location; if not, identifying one or more verbal dialing protocols used at the determined location of the vehicle; requesting telematics dialing software that includes the one or more identified verbal dialing protocols; receiving the requested telematics dialing software from a central facility; and storing the received telematics dialing software at the vehicle.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: September 10, 2013
    Assignee: General Motors LLC
    Inventors: Uma Arun, Rathinavelu Chengalvarayan, Kevin R. Krause, Eray Yasan, Gaurav Talwar, Xufang Zhao, Michael A. Wuergler