Patents by Inventor Michael Schnabel

Michael Schnabel 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).

  • Publication number: 20210272242
    Abstract: Embodiments of the present invention provide a computer-implemented method of determining displacement information, comprising receiving (520) image data (485) comprising first pixel data (610) corresponding to movement of a scanning apparatus (130), with respect to at least one object, in a first direction and a second pixel data (620) corresponding to movement of the scanning apparatus (130) in a second direction, and determining (520) displacement information indicative of a displacement of at least a portion of the second pixel data (620) with respect to the first pixel data (610) by minimising a cost function indicative of a similarity between the first and second pixel data.
    Type: Application
    Filed: May 10, 2019
    Publication date: September 2, 2021
    Applicant: Oxford University Innovation Limited
    Inventors: Bartlomiej W. PAPIEZ, Bostjan MARKELC, Graham BROWN, Ruth J. MUSCHEL, John Michael BRADY, Julia Anne SCHNABEL
  • Publication number: 20210142809
    Abstract: An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided. The apparatus includes a receiving interface, a delay buffer and a sample processor for processing the selected audio signal samples to obtain reconstructed audio signal samples of the reconstructed audio signal. The sample selector is configured to select, if a current frame is received by the receiving interface and if the current frame being received by the receiving interface is not corrupted, the plurality of selected audio signal samples from the audio signal samples being stored in the delay buffer depending on a pitch lag information being included by the current frame.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 13, 2021
    Inventors: Michael SCHNABEL, Goran MARKOVIC, Ralph SPERSCHNEIDER, Jérémie LECOMTE, Christian HELMRICH
  • Publication number: 20210104251
    Abstract: Described are an encoder for coding speech-like content and/or general audio content, wherein the encoder is configured to embed, at least in some frames, parameters in a bitstream, which parameters enhance a concealment in case an original frame is lost, corrupted or delayed, and a decoder for decoding speech-like content and/or general audio content, wherein the decoder is configured to use parameters which are sent later in time to enhance a concealment in case an original frame is lost, corrupted or delayed, as well as a method for encoding and a method for decoding.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 8, 2021
    Inventors: Jérémie LECOMTE, Benjamin SCHUBERT, Michael SCHNABEL, Martin DIETZ
  • Publication number: 20210098003
    Abstract: An apparatus for decoding an audio signal is provided, having a receiving interface, configured to receive a first frame having a first audio signal portion of the audio signal, and configured to receive a second frame having a second audio signal portion of the audio signal; a noise level tracing unit, wherein the noise level tracing unit is configured to determine noise level information depending on at least one of the first audio signal portion and the second audio signal portion; a first reconstruction unit for reconstructing, in a first reconstruction domain, a third audio signal portion of the audio signal depending on the noise level information; a transform unit for transforming the noise level information to a second reconstruction domain; and a second reconstruction unit for reconstructing, in the second reconstruction domain, a fourth audio signal portion of the audio signal depending on the noise level information.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 1, 2021
    Inventors: Michael SCHNABEL, Markovic GORAN, Ralph SPERSCHNEIDER, Jérémie LECOMTE, Christian HELMRICH
  • Patent number: 10878830
    Abstract: Described are an encoder for coding speech-like content and/or general audio content, wherein the encoder is configured to embed, at least in some frames, parameters in a bitstream, which parameters enhance a concealment in case an original frame is lost, corrupted or delayed, and a decoder for decoding speech-like content and/or general audio content, wherein the decoder is configured to use parameters which are sent later in time to enhance a concealment in case an original frame is lost, corrupted or delayed, as well as a method for encoding and a method for decoding.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: December 29, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Jérémie Lecomte, Benjamin Schubert, Michael Schnabel, Martin Dietz
  • Patent number: 10867613
    Abstract: An apparatus for decoding an audio signal is provided, having a receiving interface, configured to receive a first frame having a first audio signal portion of the audio signal, and configured to receive a second frame having a second audio signal portion of the audio signal; a noise level tracing unit, wherein the noise level tracing unit is configured to determine noise level information depending on at least one of the first audio signal portion and the second audio signal portion; a first reconstruction unit for reconstructing, in a first reconstruction domain, a third audio signal portion of the audio signal depending on the noise level information; a transform unit for transforming the noise level information to a second reconstruction domain; and a second reconstruction unit for reconstructing, in the second reconstruction domain, a fourth audio signal portion of the audio signal depending on the noise level information.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: December 15, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Markovic Goran, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
  • Patent number: 10854208
    Abstract: An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided. The apparatus includes a receiving interface, a delay buffer and a sample processor for processing the selected audio signal samples to obtain reconstructed audio signal samples of the reconstructed audio signal. The sample selector is configured to select, if a current frame is received by the receiving interface and if the current frame being received by the receiving interface is not corrupted, the plurality of selected audio signal samples from the audio signal samples being stored in the delay buffer depending on a pitch lag information being included by the current frame.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: December 1, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Goran Markovic, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
  • Publication number: 20200342882
    Abstract: An apparatus for generating an error concealment signal, includes: an LPC representation generator for generating a replacement LPC representation; a gain calculator for calculating a gain information from the LPC representations; a compensator for compensating a gain influence of the replacement LPC representation using the gain information; and an LPC synthesizer for filtering codebook information using the replacement LPC representation to obtain the error concealment signal, wherein the compensator is configured for weighting the codebook information or an LPC synthesis output signal.
    Type: Application
    Filed: July 8, 2020
    Publication date: October 29, 2020
    Inventors: Michael SCHNABEL, Jérémie LECOMTE, Ralph SPERSCHNEIDER, Manuel JANDER
  • Publication number: 20200312338
    Abstract: An apparatus for decoding an audio signal includes a receiving interface, wherein the receiving interface is configured to receive a first frame and a second frame. Moreover, the apparatus includes a noise level tracing unit for determining noise level information being represented in a tracing domain.
    Type: Application
    Filed: April 15, 2020
    Publication date: October 1, 2020
    Inventors: Michael SCHNABEL, Goran MARKOVIC, Ralph SPERSCHNEIDER, Jérémie LECOMTE, Christian HELMRICH
  • Publication number: 20200294511
    Abstract: An apparatus for generating an error concealment signal, includes: an LPC representation generator for generating a replacement LPC representation; an LPC synthesizer for filtering a codebook information using the replacement LPC representation; and a noise estimator for estimating a noise estimate during a reception of good audio frames, wherein the noise estimate depends on the good audio frames representation generator is configured to use the noise estimate estimated by the noise estimator in generating the replacement LPC representation.
    Type: Application
    Filed: March 27, 2020
    Publication date: September 17, 2020
    Inventors: Michael SCHNABEL, Jérémie LECOMTE, Ralph SPERSCHNEIDER, Manuel JANDER
  • Publication number: 20200273475
    Abstract: In apparatus, methods, and programs for selecting pitch lag, an encoder obtains a first and a second estimates of a pitch lag for a current frame. A selected value is chosen by selection between the first and the second estimates, based on a first and a second correlation measurements. The second estimate is conditioned by the pitch lag selected at the previous frame. The selection is based on a comparison between: a downscaled version of a first correlation measurement associated to the current frame and obtained at a lag corresponding to the first estimate; and a second correlation measurement associated to the current frame and obtained at a lag corresponding to the second estimate.
    Type: Application
    Filed: May 7, 2020
    Publication date: August 27, 2020
    Inventors: Emmanuel RAVELLI, Martin DIETZ, Michael SCHNABEL, Arthur TRITTHART, Alexander TSCHEKALINSKIJ
  • Publication number: 20200273466
    Abstract: An apparatus for generating an error concealment signal includes an LPC (linear prediction coding) representation generator for generating a first replacement LPC representation and a different second replacement LPC representation; an LPC synthesizer for filtering a first codebook information using the first replacement representation to obtain a first replacement signal and for filtering a different second codebook information using the second replacement LPC representation to obtain a second replacement signal; and a replacement signal combiner for combining the first replacement signal and the second replacement signal to obtain the error concealment signal.
    Type: Application
    Filed: March 3, 2020
    Publication date: August 27, 2020
    Inventors: Michael SCHNABEL, Jérémie LECOMTE, Ralph SPERSCHNEIDER, Manuel JANDER
  • Publication number: 20200265846
    Abstract: An assignment of one of phase set of different loss concealment tools of an audio decoder to a portion of the audio signal to be decoded from a data stream, which portion is affected by loss, that is the selection out of the set of different loss concealment tools, may be made in a manner leading to a more pleasant loss concealment if the assignment/selection is done based on two measures: A first measure which is determined measures a spectral position of a spectral centroid of a spectrum of the audio signal and a second measure which is determined measures a temporal predictability of the audio signal. The assigned or selected loss concealment tool may then be used to recover the portion of the audio signal.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: Adrian TOMASEK, Emmanuel RAVELLI, Markus SCHNELL, Alexander TSCHEKALINSKIJ, Michael SCHNABEL, Ralph SPERSCHNEIDER
  • Publication number: 20200258530
    Abstract: An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided, having: a receiving interface for receiving one or more frames, a coefficient generator, and a signal reconstructor. The coefficient generator is configured to determine one or more first audio signal coefficients, and one or more noise coefficients. Moreover, the coefficient generator is configured to generate one or more second audio signal coefficients, depending on the one or more first audio signal coefficients and depending on the one or more noise coefficients.
    Type: Application
    Filed: March 3, 2020
    Publication date: August 13, 2020
    Inventors: Michael SCHNABEL, Goran MARKOVIC, Ralph SPERSCHNEIDER, Jérémie LECOMTE, Christian HELMRICH
  • Publication number: 20200258529
    Abstract: An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal includes a receiving interface for receiving one or more frames comprising information on a plurality of audio signal samples of an audio signal spectrum of the encoded audio signal, and a processor for generating the reconstructed audio signal. The processor is configured to generate the reconstructed audio signal by fading a modified spectrum to a target spectrum, if a current frame is not received by the receiving interface or if the current frame is received by the receiving interface but is corrupted, wherein the modified spectrum includes a plurality of modified signal samples, wherein, for each of the modified signal samples of the modified spectrum, an absolute value of the modified signal sample is equal to an absolute value of one of the audio signal samples of the audio signal spectrum.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 13, 2020
    Inventors: Michael SCHNABEL, Goran MARKOVIC, Ralph SPERSCHNEIDER, Jérémie LECOMTE, Christian HELMRICH
  • Patent number: 10733997
    Abstract: An apparatus for generating an error concealment signal, includes: an LPC representation generator for generating a replacement LPC representation; a gain calculator for calculating a gain information from the LPC representations; a compensator for compensating a gain influence of the replacement LPC representation using the gain information; and an LPC synthesizer for filtering codebook information using the replacement LPC representation to obtain the error concealment signal, wherein the compensator is configured for weighting the codebook information or an LPC synthesis output signal.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: August 4, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Jérémie Lecomte, Ralph Sperschneider, Manuel Jander
  • Patent number: 10679632
    Abstract: An apparatus for decoding an audio signal includes a receiving interface, wherein the receiving interface is configured to receive a first frame and a second frame. Moreover, the apparatus includes a noise level tracing unit for determining noise level information being represented in a tracing domain. Furthermore, the apparatus includes a first reconstruction unit for reconstructing a third audio signal portion of the audio signal depending on the noise level information and a second reconstruction unit for reconstructing a fourth audio signal portion depending on noise level information being represented in the second reconstruction domain.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: June 9, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Goran Markovic, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
  • Patent number: 10672404
    Abstract: An apparatus for decoding an encoded audio signal to obtain a reconstructed audio signal is provided, having: a receiving interface for receiving one or more frames, a coefficient generator, and a signal reconstructor. The coefficient generator is configured to determine one or more first audio signal coefficients, and one or more noise coefficients. Moreover, the coefficient generator is configured to generate one or more second audio signal coefficients, depending on the one or more first audio signal coefficients and depending on the one or more noise coefficients.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: June 2, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Goran Markovic, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
  • Patent number: 10643624
    Abstract: An apparatus for reconstructing a frame including a speech signal as a reconstructed frame is provided, the apparatus including a determination unit and a frame reconstructor being configured to reconstruct the reconstructed frame, such that the reconstructed frame completely or partially includes the first reconstructed pitch cycle, such that the reconstructed frame completely or partially includes a second reconstructed pitch cycle, and such that the number of samples of the first reconstructed pitch cycle differs from a number of samples of the second reconstructed pitch cycle.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: May 5, 2020
    Assignee: Fraunhofer-Gesellschaft zur Föerderung der angewandten Forschung e.V.
    Inventors: Jérémie Lecomte, Michael Schnabel, Goran Markovic, Martin Dietz, Bernhard Neugebauer
  • Patent number: 10621993
    Abstract: An apparatus for generating an error concealment signal, includes: an LPC representation generator for generating a replacement LPC representation; an LPC synthesizer for filtering a codebook information using the replacement LPC representation; and a noise estimator for estimating a noise estimate during a reception of good audio frames, wherein the noise estimate depends on the good audio frames representation generator is configured to use the noise estimate estimated by the noise estimator in generating the replacement LPC representation.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: April 14, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Michael Schnabel, Jérémie Lecomte, Ralph Sperschneider, Manuel Jander