Patents by Inventor Richard Allen Kreifeldt

Richard Allen Kreifeldt 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: 10368164
    Abstract: An audio processing system for a listening device includes an input device, a voice activity detector and a ratio-based attenuator. The input device is configured to receive a first audio signal emanating from an environment and including a signal of interest. The voice activity detector is configured to generate a control signal in response to the first audio signal. The ratio-based attenuator is configured to receive the control signal and determine whether the signal level of the first audio signal exceeds the signal level of an audio signal received from an audio playback device by at least a target difference. If so, then the audio level of the playback audio signal is maintained. Otherwise, the audio level of the playback audio signal is adjusted, where, at the adjusted value, the first signal level exceeds the playback signal level by at least the target difference.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: July 30, 2019
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: James M. Kirsch, Ajay Iyer, Richard Allen Kreifeldt
  • Publication number: 20190116260
    Abstract: A voice recognition-based dialing method and a voice recognition-based dialing system are provided. The methods includes: determining a recognition result based on a user's voice input, at least one acoustic model and at least one language model, where the at least one acoustic model and the at least one language model are obtained based on information collected in an electronic device. The system includes: obtain at least one acoustic model and at least one language model based on information collected in an electronic device; and determine a recognition result based on a user's voice input, the at least one acoustic model and the at least one language model. The acoustic models and the language models are updated based on the information collected in the electronic device, which may be helpful to the voice recognition-based dialing.
    Type: Application
    Filed: December 30, 2014
    Publication date: April 18, 2019
    Inventors: Jianjun MA, Liping HU, Richard Allen KREIFELDT
  • Patent number: 10250650
    Abstract: One embodiment provides a non-transitory medium containing computer program code that performs an operation that includes retrieving, for each of two or more identified users, a respective musical preferences model representing a plurality of acoustical characteristics of musical content determined based on preferences of the respective user. Additionally, the operation includes generating a common musical preferences model representing a set of common acoustical characteristics of musical content for the two or more identified users, based on the musical preferences models for each of the two or more identified users. The operation also includes identifying a library of available musical content. Furthermore, the operation includes creating a playlist of two or more musical selections from the library of available musical content, based on the common musical preferences model.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: April 2, 2019
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Richard Allen Kreifeldt, Michelle L. Avary
  • Patent number: 10015593
    Abstract: Digital filters for processing an input audio signal for extending the audio capabilities and reducing distortion of a loudspeaker. Such extension may include a general sound pressure level (SPL) extension or a more targeted low frequency (LF) extension. This may be accomplished by modifying an original frequency response of the loudspeaker to achieve a particular extension, and applying a digital linear filter based on the modified frequency response to the audio signal. A nonlinear digital filter may also be applied to the audio signal reduce nonlinear distortions of the loudspeaker. The nonlinear digital filter may be based on an inverse of an electro-mechanical model of the loudspeaker. In this manner, a loudspeaker may be driven close to its maximum theoretical power capability without increasing distortion in the loudspeaker output.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: July 3, 2018
    Assignee: University of Utah
    Inventors: Ajay Iyer, Jeffrey Hutchings, Richard Allen Kreifeldt, V. John Mathews, Shreyas Srikanth Payal
  • Publication number: 20180014112
    Abstract: In an audio system, an audio signal is preprocessed to provide an input signal to a fast detector and a slow detector, the input signal comprising alert signals and ambient sounds. The slow detector determines the ambient sound level of the input signal which is output to an alert signal detector. The alert signal detector uses the ambient sound level to compute an adaptive threshold level using an adaptive threshold function. The fast detector determines the envelope level of the input signal which is output to the alert signal detector. The alert signal detector compares the envelope level to the adaptive threshold level to determine if an alert signal is present in the input signal. The adaptive threshold level varies depending on the ambient sound level of the input signal and the alert signal detection of the audio system automatically adapts to changing acoustic environments having different ambient sound levels.
    Type: Application
    Filed: August 14, 2017
    Publication date: January 11, 2018
    Inventors: Ajay Iyer, Jeffrey Hutchings, Richard Allen Kreifeldt
  • Patent number: 9848262
    Abstract: A corrector is configured to transform audio signals to compensate for unwanted distortion characteristics of a loudspeaker. A tuning filter is configured to transform audio signals to incorporate desired distortion characteristics associated with a target loudspeaker. By chaining together the tuning filter and the corrector, an audio signal can be modified so that the loudspeaker, when outputting the audio signal, has response characteristics of the target loudspeaker.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: December 19, 2017
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
    Inventors: Ajay Iyer, Jeffrey Hutchings, Richard Allen Kreifeldt
  • Publication number: 20170280241
    Abstract: A corrector is configured to transform audio signals to compensate for unwanted distortion characteristics of a loudspeaker. A tuning filter is configured to transform audio signals to incorporate desired distortion characteristics associated with a target loudspeaker. By chaining together the tuning filter and the corrector, an audio signal can be modified so that the loudspeaker, when outputting the audio signal, has response characteristics of the target loudspeaker.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 28, 2017
    Inventors: Ajay Iyer, Jeffrey Hutchings, Richard Allen Kreifeldt
  • Patent number: 9749733
    Abstract: In an audio system, an audio signal is preprocessed to provide an input signal to a fast detector and a slow detector, the input signal comprising alert signals and ambient sounds. The slow detector determines the ambient sound level of the input signal which is output to an alert signal detector. The alert signal detector uses the ambient sound level to compute an adaptive threshold level using an adaptive threshold function. The fast detector determines the envelope level of the input signal which is output to the alert signal detector. The alert signal detector compares the envelope level to the adaptive threshold level to determine if an alert signal is present in the input signal. The adaptive threshold level varies depending on the ambient sound level of the input signal and the alert signal detection of the audio system automatically adapts to changing acoustic environments having different ambient sound levels.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 29, 2017
    Assignee: HARMAN INTENATIONAL INDUSTRIES, INCORPORATED
    Inventors: Ajay Iyer, Jeffrey Hutchings, Richard Allen Kreifeldt
  • Publication number: 20170223451
    Abstract: An audio processing system for a listening device includes an input device, a voice activity detector and a ratio-based attenuator. The input device is configured to receive a first audio signal emanating from an environment and including a signal of interest. The voice activity detector is configured to generate a control signal in response to the first audio signal. The ratio-based attenuator is configured to receive the control signal and determine whether the signal level of the first audio signal exceeds the signal level of an audio signal received from an audio playback device by at least a target difference. If so, then the audio level of the playback audio signal is maintained. Otherwise, the audio level of the playback audio signal is adjusted, where, at the adjusted value, the first signal level exceeds the playback signal level by at least the target difference.
    Type: Application
    Filed: March 31, 2017
    Publication date: August 3, 2017
    Inventors: James M. Kirsch, Ajay Iyer, Richard Allen Kreifeldt
  • Patent number: 9615170
    Abstract: An audio processing system for a listening device includes an input device, a voice activity detector and a ratio-based attenuator. The input device is configured to receive a first audio signal emanating from an environment and including a signal of interest. The voice activity detector is configured to generate a control signal in response to the first audio signal. The ratio-based attenuator is configured to receive the control signal and determine whether the signal level of the first audio signal exceeds the signal level of an audio signal received from an audio playback device by at least a target difference. If so, then the audio level of the playback audio signal is maintained. Otherwise, the audio level of the playback audio signal is adjusted, where, at the adjusted value, the first signal level exceeds the playback signal level by at least the target difference.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: April 4, 2017
    Assignee: HARMAN INTERNATIONAL INDUSTRIES, INC.
    Inventors: James M. Kirsch, Ajay Iyer, Richard Allen Kreifeldt
  • Publication number: 20160196345
    Abstract: One embodiment provides a non-transitory medium containing computer program code that performs an operation that includes determining an initial musical preferences model describing acoustical characteristics of musical content by identifying user preferences. Additionally, the operation includes dividing the initial musical preferences model into a plurality of cluster models based on the identified user preferences, each of the plurality of cluster models representing a respective set of acoustical characteristics of musical content. One of the plurality of cluster models is selected. The operation further includes creating a playlist by selecting instances of available musical content for playback using the selected cluster model.
    Type: Application
    Filed: January 5, 2015
    Publication date: July 7, 2016
    Inventor: Richard Allen Kreifeldt
  • Publication number: 20160195405
    Abstract: Various embodiments provide techniques for performing an operation that includes receiving a request specifying one or more geospatial commands. The operation further includes generating a navigation query based on the one or more geospatial commands and using a user-specific geospatial command model generated based on collected user behavior and feedback. The operation also includes executing the navigation query against a navigation database to determine route and destination information.
    Type: Application
    Filed: December 23, 2015
    Publication date: July 7, 2016
    Inventor: Richard Allen Kreifeldt
  • Publication number: 20160197967
    Abstract: One embodiment provides a non-transitory medium containing computer program code that performs an operation that includes retrieving, for each of two or more identified users, a respective musical preferences model representing a plurality of acoustical characteristics of musical content determined based on preferences of the respective user. Additionally, the operation includes generating a common musical preferences model representing a set of common acoustical characteristics of musical content for the two or more identified users, based on the musical preferences models for each of the two or more identified users. The operation also includes identifying a library of available musical content. Furthermore, the operation includes creating a playlist of two or more musical selections from the library of available musical content, based on the common musical preferences model.
    Type: Application
    Filed: January 5, 2015
    Publication date: July 7, 2016
    Inventors: Richard Allen Kreifeldt, Michelle L. Avary
  • Publication number: 20150371628
    Abstract: One embodiment of the present disclosure sets forth an approach for performing speech recognition. A speech recognition system receives an electronic signal that represents human speech of a speaker. The speech recognition system converts the electronic signal into a plurality of phonemes. The speech recognition system, while converting the plurality of phonemes into a first group of words based on a first voice recognition model, encounters an error when attempting to convert one or more of the phonemes into words. The speech recognition system transmits a message associated with the error to a server machine. The speech recognition system causes the server machine to convert the one or more phonemes into a second group of words based on a second voice recognition model resident on the server machine. The speech recognition system receives the second group of words from the server machine.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 24, 2015
    Inventor: Richard Allen KREIFELDT
  • Publication number: 20150358730
    Abstract: An audio processing system for a listening device includes an input device, a voice activity detector and a ratio-based attenuator. The input device is configured to receive a first audio signal emanating from an environment and including a signal of interest. The voice activity detector is configured to generate a control signal in response to the first audio signal. The ratio-based attenuator is configured to receive the control signal and determine whether the signal level of the first audio signal exceeds the signal level of an audio signal received from an audio playback device by at least a target difference. If so, then the audio level of the playback audio signal is maintained. Otherwise, the audio level of the playback audio signal is adjusted, where, at the adjusted value, the first signal level exceeds the playback signal level by at least the target difference.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: James M. Kirsch, Ajay Iyer, Richard Allen Kreifeldt
  • Publication number: 20150249889
    Abstract: Digital filters for processing an input audio signal for extending the audio capabilities and reducing distortion of a loudspeaker. Such extension may include a general sound pressure level (SPL) extension or a more targeted low frequency (LF) extension. This may be accomplished by modifying an original frequency response of the loudspeaker to achieve a particular extension, and applying a digital linear filter based on the modified frequency response to the audio signal. A nonlinear digital filter may also be applied to the audio signal reduce nonlinear distortions of the loudspeaker. The nonlinear digital filter may be based on an inverse of an electro-mechanical model of the loudspeaker. In this manner, a loudspeaker may be driven close to its maximum theoretical power capability without increasing distortion in the loudspeaker output.
    Type: Application
    Filed: March 3, 2015
    Publication date: September 3, 2015
    Inventors: Ajay IYER, Jeffrey HUTCHINGS, Richard Allen KREIFELDT, V. John MATHEWS, Shreyas Srikanth PAYAL
  • Patent number: 8473844
    Abstract: A system for management and control of audio-related equipment. A link manager may be included in the system. The link manager may be configured to manage subscriptions to multiple other audio-related devices or control panel views. When the managed data variables change, the link manager module may notify other audio-related devices and/or control panel views of the change. In response to the notification, the other audio-related devices and/or control panels may subscribe to the audio-related device with the changed data variable, to request receipt of the updated data variable. In some examples, the link manager module may also be configured to lessen the subscription burden for a particular audio-related device.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: June 25, 2013
    Assignee: Harman International Industries, Incorporated
    Inventors: Richard Allen Kreifeldt, John Lee, William A. Plunkett, Timothy J. Shuttleworth, Andrew Stevenson, Bruce Vander Werf, Steve Hatch, Michael Douglas Hamling, Scott Gardner
  • Publication number: 20130003757
    Abstract: A computing device may include a processor, an internal bus, and a network interface controller configured to communicate over a network. The processor and the network interface controller may communicate over the internal bus. The computing device may operate in a system that generates one or more media streams from time-stamped packets received over a network. The packets may include audio, video, or a combination of both, sampled at a rate determined by a master media clock. Timestamps in the packets may be presentation times based on values of a remote real-time clock at the transmitter that is synchronized with a local real-time clock at a receiver. The system may generate the media streams from the media stream samples and present the sampled data according to the presentation times.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Applicant: Harman International Industries, Incorporated
    Inventors: Robert Boatright, Richard Allen Kreifeldt, David Olsen
  • Patent number: 8249071
    Abstract: A system for management and control of audio related equipment. The system provides an architecture to manage, monitor, and control all of the audio related equipment in an audio system. A communication protocol used within the system allows standardized communication between the performance equipment mangers and the audio related devices, as well as device-to-device communication. The protocol allows users to add audio related devices to an audio system without performing a setup to configure communication between the devices.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: August 21, 2012
    Assignee: Harman International Industries, Incorporated
    Inventors: Richard Allen Kreifeldt, John Lee, William A. Plunkett, Timothy J. Shuttleworth, Andrew Stevenson, Bruce Vander Werf, Howard Scott Zollinger
  • Patent number: D795334
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: August 22, 2017
    Inventors: Richard Allen Kreifeldt, Tyler Allan, Noel Larson