Patents by Inventor Peter Raffensperger

Peter Raffensperger 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).

  • Machine learning based sound field analysis
    Patent number: 10334357
    Abstract: Impulse responses of a device are measured. A database of sound files is generated by convolving source signals with the impulse responses of the device. The sound files from the database are transformed into time-frequency domain. One or more sub-band directional features is estimated at each sub-band of the time-frequency domain. A deep neural network (DNN) is trained for each sub-band based on the estimated one or more sub-band directional features and a target directional feature.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: June 25, 2019
    Assignee: Apple Inc.
    Inventors: Joshua D. Atkins, Mehrez Souden, Symeon Delikaris-Manias, Peter Raffensperger
  • MACHINE LEARNING BASED SOUND FIELD ANALYSIS
    Publication number: 20190104357
    Abstract: Impulse responses of a device are measured. A database of sound files is generated by convolving source signals with the impulse responses of the device. The sound files from the database are transformed into time-frequency domain. One or more sub-band directional features is estimated at each sub-band of the time-frequency domain. A deep neural network (DNN) is trained for each sub-band based on the estimated one or more sub-band directional features and a target directional feature.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Joshua D. Atkins, Mehrez Souden, Symeon Delikaris-Manias, Peter Raffensperger