Patents by Inventor Doug Olsen

Doug Olsen 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: 11682376
    Abstract: An ambient-aware audio system reduces stationary noise and maintains dynamic environmental sound in a received input audio signal. The system includes a signal-to-noise ratio (SNR) estimator that estimates an a priori SNR and an a posteriori SNR, a gain function that uses the estimated SNRs as inputs to compute coefficients of a frequency domain noise reduction filter that uses the computed coefficients to filter a frame of the input audio signal to generate an output audio signal. The SNR estimator, gain function, and filter are configured to iterate over a plurality of frames of the input audio signal. The SNRs are estimated using the input audio signal and the output audio signal associated with one or more of the plurality of frames. The gain function is derived to minimize an expected value of differences between spectral amplitudes of the output audio signal and the input audio signal.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: June 20, 2023
    Assignee: Cirrus Logic, Inc.
    Inventors: Khosrow Lashkari, Doug Olsen
  • Patent number: 11490198
    Abstract: A method for detecting wind noise incident on a single microphone may include receiving an audio signal indicative of sound incident on the single microphone, dividing the audio signal into a plurality of audio frames, and determining whether wind noise is incident on the single microphone based on a combination of a correlation metric between successive audio frames of the plurality of audio frames and a power ratio difference between a first power ratio and a second power ratio. The first power ratio may equal an amount of power present in a first frequency range of the audio signal to a total amount of power present in the audio signal across all frequencies. The second power ratio may equal an amount of power present in a second frequency range of the audio signal to the total amount of power present in the audio signal across all frequencies.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: November 1, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Ning Li, Teja Buddha, Mohamed Sabet, Doug Olsen
  • Patent number: 7497139
    Abstract: An apparatus in one example has: a first component coupled to a second component by a suspension component; and the suspension component structured to maintain predetermined angular spring rates and to maintain high linear spring rates, that are higher than the angular spring rates, along linear axes of the suspension component that flex under predetermined increased dynamic loading of the suspension component.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: March 3, 2009
    Assignee: Northrop Grumman Corporation
    Inventors: Eric Maier, Rick Anderson, Doug Olsen, Sams Engelman, Roger Burlingame, Larry Dean Krieger
  • Publication number: 20070119250
    Abstract: An apparatus in one example has: a first component coupled to a second component by a suspension component; and the suspension component structured to maintain predetermined angular spring rates and to maintain high linear spring rates, that are higher than the angular spring rates, along linear axes of the suspension component that flex under predetermined increased dynamic loading of the suspension component.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 31, 2007
    Inventors: Eric Maier, Rick Anderson, Doug Olsen, Sams Engelman, Roger Burlingame, Larry Krieger