Patents by Inventor Falko Ridderbusch

Falko Ridderbusch 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: 8588427
    Abstract: An apparatus for extracting an ambient signal from an input audio signal comprises a gain-value determinator configured to determine a sequence of time-varying ambient signal gain values for a given frequency band of the time-frequency distribution of the input audio signal in dependence on the input audio signal. The apparatus comprises a weighter configured to weight one of the sub-band signals representing the given frequency band of the time-frequency-domain representation with the time-varying gain values, to obtain a weighted sub-band signal. The gain-value determinator is configured to obtain one or more quantitative feature-values describing one or more features of the input audio signal and to provide the gain-value as a function of the one or more quantitative feature values such that the gain values are quantitatively dependent on the quantitative values.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: November 19, 2013
    Assignee: Frauhnhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.
    Inventors: Christian Uhle, Juergen Herre, Stefan Geyersberger, Falko Ridderbusch, Andreas Walter, Oliver Moser
  • Publication number: 20120177204
    Abstract: An audio signal decoder for providing an upmix signal representation in dependence on a downmix signal representation and an object-related parametric information includes an object separator configured to decompose the downmix signal representation, to provide a first audio information describing a first set of one or more audio objects of a first audio object type and a second audio information describing a second set of one or more audio objects of a second audio object type, in dependence on the downmix signal representation and using at least a part of the object-related parametric information.
    Type: Application
    Filed: December 22, 2011
    Publication date: July 12, 2012
    Inventors: Oliver Hellmuth, Cornelia Falch, Juergen Herre, Johannes Hilpert, Leon Terentiv, Falko Ridderbusch
  • Publication number: 20120143613
    Abstract: An apparatus for providing one or more adjusted parameters for a provision of an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information includes a parameter adjuster. The parameter adjuster is configured to receive one or more input parameters and to provide, on the basis thereof, one or more adjusted parameters. The parameter adjuster is configured to provide the one or more adjusted parameters in dependence on the one or more input parameters and the object-related parametric information, such that a distortion of the upmix signal representation caused by the use of non-optimal parameters is reduced at least for input parameters deviating from optimal parameters by more than a predetermined deviation.
    Type: Application
    Filed: October 28, 2011
    Publication date: June 7, 2012
    Inventors: Juergen Herre, Andreas Hoelzer, Leonid Terentiev, Thorsten Kastner, Cornella Falch, Heiko Purnhagen, Jonas Engdegard, Falko Ridderbusch
  • Publication number: 20110261967
    Abstract: An apparatus for generating a multi-channel audio signal based on an input audio signal comprises a main signal upmixer, a section selector, a section signal upmixer and a combiner. The main signal upmixer is configured to provide a main multi-channel audio signal based on the input audio signal. The section selector is configured to select or not select a section of the input audio signal based on an analysis of the input audio signal. The selected section of the input audio signal, a processed selected section of the input audio signal or a reference signal associated with the selected section of the input audio signal is provided as section signal. The section signal upmixer is configured to provide a section upmix signal based on the section signal, and the combiner is configured to overlay the main multi-channel audio signal and the section upmix signal to obtain the multi-channel audio signal.
    Type: Application
    Filed: June 8, 2011
    Publication date: October 27, 2011
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Andreas WALTHER, Oliver HELLMUTH, Falko RIDDERBUSCH, Christian STOECKLMEIER
  • Publication number: 20110191101
    Abstract: An apparatus for processing an audio signal to obtain control information for a speech enhancement filter has a feature extractor for extracting at least one feature per frequency band of a plurality of frequency bands of a short-time spectral representation of a plurality of short-time spectral representations, where the at least one feature represents a spectral shape of the short-time spectral representation in the frequency band. The apparatus additionally has a feature combiner for combining the at least one feature for each frequency band using combination parameters to obtain the control information for the speech enhancement filter for a time portion of the audio signal. The feature combiner can use a neural network regression method, which is based on combination parameters determined in a training phase for the neural network.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 4, 2011
    Inventors: Christian Uhle, Oliver Hellmuth, Bernhard Grill, Falko Ridderbusch
  • Publication number: 20090080666
    Abstract: An apparatus for extracting an ambient signal from an input audio signal comprises a gain-value determinator configured to determine a sequence of time-varying ambient signal gain values for a given frequency band of the time-frequency distribution of the input audio signal in dependence on the input audio signal. The apparatus comprises a weighter configured to weight one of the sub-band signals representing the given frequency band of the time-frequency-domain representation with the time-varying gain values, to obtain a weighted sub-band signal. The gain-value determinator is configured to obtain one or more quantitative feature-values describing one or more features of the input audio signal and to provide the gain-value as a function of the one or more quantitative feature values such that the gain values are quantitatively dependent on the quantitative values.
    Type: Application
    Filed: March 26, 2008
    Publication date: March 26, 2009
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Christian Uhle, Juergen Herre, Stefan Geyersberger, Falko Ridderbusch, Andreas Walter, Oliver Moser