Patents by Inventor Tom Goldstein

Tom Goldstein 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).

  • Speech quality assessment with noise masking
    Patent number: 7412375
    Abstract: A method and apparatus for assessing the perceptual quality of stereo speech signals transmitted via a telecommunications network and recorded acoustically from an acoustic terminal device in which a mono reference signal comprising a single channel is aligned with a degraded stereo signal comprising a left and a right channel; a delay between each channel of said degraded signal and said reference signal is estimated; a noise masking indicator in dependence upon said estimated delays is generated; the level of the stereo signals is adjusted in dependence upon said noise masking indicator; a set of perceptually relevant parameters for each of said reference and degraded signals are generated; the perceptually relevant parameters of the reference signal with the perceptually relevant parameters of the degraded signal to generate a disturbance profile are compared; and a speech quality prediction is generated in dependence upon said disturbance profile.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: August 12, 2008
    Assignee: Psytechnics Limited
    Inventors: Tom Goldstein, Paul Alexander Barrett, Antony William Rix
  • Quality assessment apparatus and method
    Publication number: 20050015245
    Abstract: This invention relates to a speech quality assessment system.
    Type: Application
    Filed: June 22, 2004
    Publication date: January 20, 2005
    Applicant: PSYTECHNICS LIMITED
    Inventors: Tom Goldstein, Paul Barrett, Antony Rix