Patents Assigned to Digital Harmonic LLC
  • Patent number: 9600445
    Abstract: A machine-implemented method for computerized digital signal processing including obtaining a digital signal from data storage or from conversion of an analog signal, and determining, from the digital signal, one or more measuring matrices. Each measuring matrix has a plurality of cells, and each cell has an amplitude corresponding to the signal energy in a frequency bin for a time slice. Cells in each measuring matrix having maximum amplitudes along a time slice and/or frequency bin are identified as maximum cells. Maxima that coincide in time and frequency are identified and a correlated maxima matrix, called a “Precision Measuring Matrix” is constructed showing the coinciding maxima and the adjacent marked maxima are linked into partial chains.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 21, 2017
    Assignee: Digital Harmonic LLC
    Inventors: Paul Reed Smith, Jack W. Smith, Frederick M. Slay
  • Patent number: 9390066
    Abstract: The invention consists of new ways of constructing a Measuring Matrices (MMs) including time deconvolution of Digital Fourier Transforms DFTs. Also, windowing functions specifically designed to facilitate time deconvolution may be used, and/or the DFTs may be performed in specific non-periodic ways to reduce artifacts and further facilitate deconvolution. These deconvolved DFTs may be used alone or correlated with other DFTs to produce a MM.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: July 12, 2016
    Assignee: Digital Harmonic LLC
    Inventors: Paul Reed Smith, Jack W. Smith, Ernestine M. Smith, Frederick M. Slay
  • Publication number: 20160112225
    Abstract: A method is performed of selecting a signal of interest from a compound signal. The method includes generating a matrix and initializing a first row of the matrix to zero. The compound signal is obtained as a digital waveform signal, with sampling rate S samples per second. For each sample of the digital signal, a new entry is recursively computed for the matrix. For each frequency bin in the matrix (where f is the center frequency of the bin) the value in the new row is computed by multiplying the value for that bin in the previous row by the complex number r*ei2?f/S and adding the new signal sample multiplied by a real constant. The method includes identifying the signal of interest from the matrix, whereby an uncertainty of which frequency bin the signal of interest exists in is eliminated.
    Type: Application
    Filed: October 16, 2015
    Publication date: April 21, 2016
    Applicant: Digital Harmonic LLC
    Inventor: Frederick M. SLAY
  • Patent number: 9279839
    Abstract: A machine-implemented method for computerized digital signal processing obtains a digital signal from data storage or from conversion of an analog signal and determines, from the digital signal, Measuring Matrices (MM). Each measuring matrix has a plurality of cells, each cell having an amplitude corresponding to the signal energy in a frequency bin for a time slice. Cells in each measuring matrix having maximum amplitudes within a time slice are identified as maximum cells. Maxima that coincide in time and frequency are identified and a correlated maxima matrix (PMM) is constructed showing the coinciding maxima and the adjacent marked maxima are linked into partial chains. If only one MM is constructed, multiple types of maxima are identified to generate the (PMM). The partial chains are isolated by parameters for a single domain or multiple domains to identify partial chains and possible separation of complex compound waveforms in the digital signal.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: March 8, 2016
    Assignee: Digital Harmonic LLC
    Inventors: Paul Reed Smith, Jack W. Smith, Ernestine M. Smith, F. Michael Slay, Shane G. W. Morris