Patents by Inventor Raphaël Nicolas GREFF

Raphaël Nicolas GREFF 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).

  • Method for visualizing the directional sound activity of a multichannel audio signal
    Patent number: 9232337
    Abstract: The invention relates to a method for visualizing a directional sound activity of a multichannel audio signal, comprising: receiving input audio channels, spatial information being associated with each one of said channel, performing a time-frequency transformation of said input audio channels, for each one of a plurality of frequency sub-bands, determining a directional sound activity vector from said transformed input audio channels, determining a contribution of each one of said directional sound activity vectors within sub-divisions of space on the basis of directivity information related to each sub-divisions of space, for each sub-division of space, determining directional sound activity level within said sub-division of space by summing said contributions within said sub-division of space, displaying a visualization of the directional sound activity of the multichannel audio signal by a graphical representation of directional sound activity level within said sub-division of space.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: January 5, 2016
    Assignee: A-VOLUTE
    Inventors: Raphaël Nicolas Greff, Hong Cong Tuyen Pham
  • METHOD FOR VISUALIZING THE DIRECTIONAL SOUND ACTIVITY OF A MULTICHANNEL AUDIO SIGNAL
    Publication number: 20140177844
    Abstract: The invention relates to a method for visualizing a directional sound activity of a multichannel audio signal, comprising: receiving input audio channels, spatial information being associated with each one of said channel, performing a time-frequency transformation of said input audio channels, for each one of a plurality of frequency sub-bands, determining a directional sound activity vector from said transformed input audio channels, determining a contribution of each one of said directional sound activity vectors within sub-divisions of space on the basis of directivity information related to each sub-divisions of space, for each sub-division of space, determining directional sound activity level within said sub-division of space by summing said contributions within said sub-division of space, displaying a visualization of the directional sound activity of the multichannel audio signal by a graphical representation of directional sound activity level within said sub-division of space.
    Type: Application
    Filed: December 20, 2012
    Publication date: June 26, 2014
    Inventors: Raphaël Nicolas GREFF, Hong Cong Tuyen Pham