Patents by Inventor Daniel Andrés Vásquez Cano

Daniel Andrés Vásquez Cano 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).

  • Downsampling schemes in a hierarchical neural network structure for phoneme recognition
    Patent number: 9595257
    Abstract: An approach for phoneme recognition is described. A sequence of intermediate output posterior vectors is generated from an input sequence of cepstral features using a first layer perceptron. The intermediate output posterior vectors are then downsampled to form a reduced input set of intermediate posterior vectors for a second layer perceptron. A sequence of final posterior vectors is generated from the reduced input set of intermediate posterior vectors using the second layer perceptron. Then the final posterior vectors are decoded to determine an output recognized phoneme sequence representative of the input sequence of cepstral features.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: March 14, 2017
    Assignee: Nuance Communications, Inc.
    Inventors: Daniel Andrés Vásquez Cano, Guillermo Aradilla, Rainer Gruhn
  • Downsampling Schemes in a Hierarchical Neural Network Structure for Phoneme Recognition
    Publication number: 20120239403
    Abstract: An approach for phoneme recognition is described. A sequence of intermediate output posterior vectors is generated from an input sequence of cepstral features using a first layer perceptron. The intermediate output posterior vectors are then downsampled to form a reduced input set of intermediate posterior vectors for a second layer perceptron. A sequence of final posterior vectors is generated from the reduced input set of intermediate posterior vectors using the second layer perceptron. Then the final posterior vectors are decoded to determine an output recognized phoneme sequence representative of the input sequence of cepstral features.
    Type: Application
    Filed: September 28, 2009
    Publication date: September 20, 2012
    Applicant: NUANCE COMMUNICATIONS, INC.
    Inventors: Daniel Andrés Vásquez Cano, Guillermo Aradilla, Rainer Gruhn