Patents by Inventor Steven Leonardus Josephus Dimphina Elisabeth Van De Par

Steven Leonardus Josephus Dimphina Elisabeth Van De Par 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 and apparatus for classifying a spectro-temporal interval of an input audio signal, and a coder including such an apparatus
    Patent number: 7373296
    Abstract: A method of classifying a spectro-temporal interval of an input audio signal (x(t)) is disclosed. A spectro-temporal interval of the input audio signal is first modelled (62 . . . 71) according to a perceptual model to provide a first representation (Rep 1). The spectro-temporal interval is then modelled (62 . . . 71) using a modified noise substituted input signal according to the same perceptual model to provide a second representation (Rep 2). The spectro-temporal interval is then classified as being noise or not based on a comparison of the first and second representations.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: May 13, 2008
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Steven Leonardus Josephus Dimphina Elisabeth Van De Par, Jan Janto Skowronek
  • Method and apparatus for audio coding using transient relocation
    Patent number: 7020615
    Abstract: An improved representation of transients in audio signals comprises modifying transient locations in such a way that a transient can occur only at a beginning of a sinusoidal segment. The modification procedure comprises the steps: detecting a beginning and an end of a transient using an energy-based approach with two sliding rectangular windows; moving samples between the beginning and the end of the transient to the locations specified by the segmentation used; and time-warping the signal parts in between the transients in order to fill the intervals between the modified transients.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: March 28, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Renat Vafin, Richard Heusdens, Steven Leonardus Josephus Dimphina Elisabeth Van De Par, Willem Bastiaan Kleijn
  • Audio coding
    Publication number: 20030061055
    Abstract: The invention concerns audio coding methods and particularly relates to an efficient means by which selected frequency bands of information from an original audio signal which are audible but which are perceptually less relevant need not be encoded, but may be replaced by a noise filling parameter. Those signal bands having content which is perceptually more relevant are, in contrast fully encoded. Encoding bits may be saved in this manner, without leaving voids in the frequency spectrum of the received signal. In this way, this method avoids the annoying bandwidth switching artefacts that can occur when full bandwidth audio is encoded with a bit budget which is too low to represent the signal within each frequency band. Thus, this method allows an increase in the encoded audio bandwidth without introducing annoying bandwidth switching artefacts.
    Type: Application
    Filed: May 6, 2002
    Publication date: March 27, 2003
    Inventors: Rakesh Taori, Steven Leonardus Josephus Dimphina Elisabeth Van De Par
  • Coding signals
    Publication number: 20020120445
    Abstract: An improved representation of transients in audio signals comprises modifying transient locations in such a way that a transient can occur only at a beginning of a sinusoidal segment.
    Type: Application
    Filed: November 2, 2001
    Publication date: August 29, 2002
    Inventors: Renat Vafin, Richard Heusdens, Steven Leonardus Josephus Dimphina Elisabeth Van De Par, Willem Bastiaan Kleijn