Patents by Inventor Alberto Amilcare Savi

Alberto Amilcare Savi 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).

  • Automatic speech recognition method and apparatus, using non-linear envelope detection of signal power spectra
    Patent number: 7877252
    Abstract: An automatic speech recognition method includes converting an acoustic signal into a digital signal; determine a power spectrum of at least one portion of the digital signal; and non-linearly determining envelope values of the power spectrum at a plurality of respective frequencies, based on a combination of the power spectrum with a filter function. Non-linearly determining envelope values involves calculating each envelope value based on a respective number of values of the power spectrum and of the filter function and the respective number of values is correlated to the respective frequency of the envelope value.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: January 25, 2011
    Assignee: STMicroelectronics S.r.l.
    Inventors: Luigi Arnone, Alberto Amilcare Savi
  • AUTOMATIC SPEECH RECOGNITION METHOD AND APPARATUS, USING NON-LINEAR ENVELOPE DETECTION OF SIGNAL POWER SPECTRA
    Publication number: 20080288253
    Abstract: An automatic speech recognition method includes converting an acoustic signal into a digital signal; determine a power spectrum of at least one portion of the digital signal; and non-linearly determining envelope values of the power spectrum at a plurality of respective frequencies, based on a combination of the power spectrum with a filter function. Non-linearly determining envelope values involves calculating each envelope value based on a respective number of values of the power spectrum and of the filter function and the respective number of values is correlated to the respective frequency of the envelope value.
    Type: Application
    Filed: May 18, 2007
    Publication date: November 20, 2008
    Applicant: STMICROELECTRONICS S.R.L.
    Inventors: Luigi Arnone, Alberto Amilcare Savi