Patents by Inventor David C. Bradley

David C. Bradley 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).

  • Patent number: 8620646
    Abstract: A system and method may be configured to analyze audio information derived from an audio signal. The system and method may track sound pitch across the audio signal. The tracking of pitch across the audio signal may take into account change in pitch by determining at individual time sample windows in the signal duration an estimated pitch and a representation of harmonic envelope at the estimated pitch. The estimated pitch and the representation of harmonic envelope may then be implemented to determine an estimated pitch for another time sample window in the signal duration with an enhanced accuracy and/or precision.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: December 31, 2013
    Assignee: The Intellisis Corporation
    Inventors: David C. Bradley, Rodney Gateau, Daniel S. Goldin, Robert N. Hilton, Nicholas K. Fisher
  • Patent number: 8548803
    Abstract: A system and method may be configured to process an audio signal. The system and method may track pitch, chirp rate, and/or harmonic envelope across the audio signal, may reconstruct sound represented in the audio signal, and/or may segment or classify the audio signal. A transform may be performed on the audio signal to place the audio signal in a frequency chirp domain that enhances the sound parameter tracking, reconstruction, and/or classification.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: October 1, 2013
    Assignee: The Intellisis Corporation
    Inventors: David C. Bradley, Daniel S. Goldin, Robert N. Hilton, Nicholas K. Fisher, Rodney Gateau, Derrick R. Roos, Eric Wiewiora
  • Publication number: 20130041657
    Abstract: A system and method may be configured to analyze audio information derived from an audio signal. The system and method may track sound pitch across the audio signal. The tracking of pitch across the audio signal may take into account change in pitch by determining at individual time sample windows in the signal duration an estimated pitch and a representation of harmonic envelope at the estimated pitch. The estimated pitch and the representation of harmonic envelope may then be implemented to determine an estimated pitch for another time sample window in the signal duration with an enhanced accuracy and/or precision.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 14, 2013
    Applicant: The Intellisis Corporation
    Inventors: David C. BRADLEY, Rodney Gateau, Daniel S. Goldin, Robert N. Hilton, Nicholas K. Fisher
  • Publication number: 20130041489
    Abstract: A system and method may be configured to analyze audio information. The system and method may include determining for an audio signal, an estimated pitch of a sound represented in the audio signal, an estimated chirp rate (or fractional chirp rate) of a sound represented in the audio signal, and/or other parameters of sound(s) represented in the audio signal. The one or more parameters may be determined through analysis of transformed audio information derived from the audio signal (e.g., through Fourier Transform, Fast Fourier Transform, Short Time Fourier Transform, Spectral Motion Transform, and/or other transforms). Statistical analysis may be implemented to determine metrics related to the likelihood that a sound represented in the audio signal has a pitch and/or chirp rate (or fractional chirp rate). Such metrics may be implemented to determine an estimated pitch and/or fractional chirp rate.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 14, 2013
    Applicant: The Intellisis Corporation
    Inventors: David C. BRADLEY, Nicholas K. FISHER, Robert N. HILTON, Rodney GATEAU, Derrick R. ROOS
  • Publication number: 20130041658
    Abstract: A system and method may be configured to process an audio signal. The system and method may track pitch, chirp rate, and/or harmonic envelope across the audio signal, may reconstruct sound represented in the audio signal, and/or may segment or classify the audio signal. A transform may be performed on the audio signal to place the audio signal in a frequency chirp domain that enhances the sound parameter tracking, reconstruction, and/or classification.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 14, 2013
    Applicant: The Intellisis Corporation
    Inventors: David C. BRADLEY, Daniel S. GOLDIN, Robert N. HILTON, Nicholas K. FISHER, Rodney GATEAU, Derrick R. ROOS, Eric WIEWIORA
  • Publication number: 20130041656
    Abstract: A system and method may be configured to analyze audio information derived from an audio signal. The system and method may track sound pitch across the audio signal. The tracking of pitch across the audio signal may take into account change in pitch by determining at individual time sample windows in the signal duration an estimated pitch and an estimated fractional chirp rate of the harmonics at the estimated pitch. The estimated pitch and the estimated fractional chirp rate may then be implemented to determine an estimated pitch for another time sample window in the signal duration with an enhanced accuracy and/or precision.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 14, 2013
    Applicant: The Intellisis Corporation
    Inventors: David C. BRADLEY, Daniel S. GOLDIN, Rodney GATEAU, Nicholas K. FISHER, Robert N. HILTON, Derrick R. ROOS, Eric WIEWIORA
  • Publication number: 20120243705
    Abstract: A system and method may be configured to reconstruct an audio signal from transformed audio information. The audio signal may be resynthesized based on individual harmonics and corresponding pitches determined from the transformed audio information. Noise may be subtracted from the transformed audio information by interpolating across peak points and across trough points of harmonic pitch paths through the transformed audio information, and subtracting values associated with the trough point interpolations from values associated with the peak point interpolations. Noise between harmonics of the sound may be suppressed in the transformed audio information by centering functions at individual harmonics in the transformed audio information, the functions serving to suppress noise between the harmonics.
    Type: Application
    Filed: August 8, 2011
    Publication date: September 27, 2012
    Applicant: The Intellisis Corporation
    Inventors: David C. BRADLEY, Daniel S. GOLDIN, Robert N. HILTON, Nicholas K. FISHER, Rodney GATEAU
  • Publication number: 20120243707
    Abstract: A system and method are provided for processing sound signals. The processing may include identifying individual harmonic sounds represented in sound signals, determining sound parameters of harmonic sounds, classifying harmonic sounds according to source, and/or other processing. The processing may include transforming the sound signals (or portions thereof) into a space which expresses a transform coefficient as a function of frequency and chirp rate. This may facilitate leveraging of the fact that the individual harmonics of a single harmonic sound may have a common pitch velocity (which is related to the chirp rate) across all of its harmonics in order to distinguish an the harmonic sound from other sounds (harmonic and/or non-harmonic) and/or noise.
    Type: Application
    Filed: August 8, 2011
    Publication date: September 27, 2012
    Applicant: The Intellisis Corporation
    Inventors: David C. Bradley, Daniel S. Goldin, Robert N. Hilton, Nicholas K. Fisher, Rodney Gateau, Derrick R. Roos, Eric Wiewiora
  • Publication number: 20120243694
    Abstract: A system and method may be provided to segment and/or classify an audio signal from transformed audio information. Transformed audio information representing a sound may be obtained. The transformed audio information may specify magnitude of a coefficient related to energy amplitude as a function of frequency for the audio signal and time. Features associated with the audio signal may be obtained from the transformed audio information. Individual ones of the features may be associated with a feature score relative to a predetermined speaker model. An aggregate score may be obtained based on the feature scores according to a weighting scheme. The weighting scheme may be associated with a noise and/or SNR estimation. The aggregate score may be used for segmentation to identify portions of the audio signal containing speech of one or more different speakers. For classification, the aggregate score may be used to determine a likely speaker model to identify a source of the sound in the audio signal.
    Type: Application
    Filed: August 8, 2011
    Publication date: September 27, 2012
    Applicant: The Intellisis Corporation
    Inventors: David C. BRADLEY, Robert N. Hilton, Daniel S. Goldin, Nicholas K. Fisher, Derrick R. Roos, Eric Wiewiora
  • Patent number: 7999542
    Abstract: A method of measuring a parameter characteristic of a rock formation in an oil well is provided for evaluating a reservoir treatment applied to a subterranean formation including the steps of injecting from a tool body suspended into a well at an injection location a known volume of fluid into the formation, performing a logging operation sensitive to a change of fluid content at several measuring points below and above the injection location; and using results of the logging operation to determine a depth profile along said well of a parameter related to fluid content.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: August 16, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Raghu Ramamoorthy, David C. Bradley, Cosan Ayan
  • Publication number: 20100277166
    Abstract: A method of measuring a parameter characteristic of a rock formation in an oil well is provided for evaluating a reservoir treatment applied to a subterranean formation including the steps of injecting from a tool body suspended into a well at an injection location a known volume of fluid into the formation, performing a logging operation sensitive to a change of fluid content at several measuring points below and above the injection location; and using results of the logging operation to determine a depth profile along said well of a parameter related to fluid content.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: Schlumberger Technology Corporation
    Inventors: Raghu Ramamoorthy, David C. Bradley, Cosan Ayan