Patents by Inventor Matthew McShea

Matthew McShea 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).

  • Detection of both voice and tones using Goertzel filters
    Patent number: 6950511
    Abstract: A plurality of Goertzel filters whose operating frequencies are distributed across the voice baseband are used to detect voice and control tones in a signal. Filters operating at frequencies of control tones and detecting that most of the signal energy occurs at those frequencies indicates presence of the control tones. At least three of the filters detecting that about 10% to 20% of the signal energy occurs at each of their operating frequencies indicate presence of voice. The total energy detected in the signal being below a noise threshold indicates presence of noise or silence.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: September 27, 2005
    Assignee: Avaya Technology Corp.
    Inventors: Sharmistha Das, Matthew McShea
  • Detection of both voice and tones using Goertzel filters
    Publication number: 20050105716
    Abstract: A plurality of Goertzel filters whose operating frequencies are distributed across the voice baseband are used to detect voice and control tones in a signal. Filters operating at frequencies of control tones and detecting that most of the signal energy occurs at those frequencies indicates presence of the control tones. At least three of the filters detecting that about 10% to 20% of the signal energy occurs at each of their operating frequencies indicate presence of voice. The total energy detected in the signal being below a noise threshold indicates presence of noise or silence.
    Type: Application
    Filed: November 13, 2003
    Publication date: May 19, 2005
    Inventors: Sharmistha Das, Matthew McShea