Patents by Inventor Manfred Lutzky

Manfred Lutzky 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: 11462226
    Abstract: There are disclosed apparatus and methods for encoding and/or decoding information signals (e.g., audio signals). An encoder apparatus includes a plurality of frequency domain (FD) encoder tools for encoding an information signal, and an encoder bandwidth detector and controller configured to select a bandwidth for at least a subgroup of the FD encoder tools. The subgroup includes less FD encoder tools than the plurality of FD encoder tools. The selection is based on information signal characteristics, so that one of the FD encoder tools of the subgroup has a different bandwidth with respect to at least one of the FD encoder tools which are not in the subgroup.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: October 4, 2022
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Emmanuel Ravelli, Conrad Benndorf, Tobias Albert, Manfred Lutzky, Adrian Tomasek
  • Patent number: 11341978
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: May 24, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Eleni Fotopoulou, Konstantin Schmidt, Conrad Benndorf, Adrian Tomasek, Tobias Albert, Timon Seidl
  • Patent number: 11341979
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: May 24, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Eleni Fotopoulou, Konstantin Schmidt, Conrad Benndorf, Adrian Tomasek, Tobias Albert, Timon Seidl
  • Patent number: 11341980
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: May 24, 2022
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Eleni Fotopoulou, Konstantin Schmidt, Conrad Benndorf, Adrian Tomasek, Tobias Albert, Timon Seidl
  • Patent number: 11290509
    Abstract: A network device for managing a call between user terminals checks whether a first user terminal supports usage of a first audio coding mode for the call, and a second user terminal intends to use a second audio coding mode for the call, and, if the first user terminal supports the usage of the first audio coding mode, and the second user terminal intends to use the second audio coding mode, repacks first data of the call sent from the first user terminal to the second user terminal and packetized into first packets referring to the second audio coding mode, into second packets referring to the first audio coding mode; and repacks second data of the call sent from the second user terminal to the first user terminal and packetized into third packets referring to the second audio coding mode, into fourth packets referring to the first audio coding mode.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: March 29, 2022
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Manfred Lutzky, Stefan Döhla, Martin Dietz
  • Publication number: 20220051684
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Markus SCHNELL, Manfred LUTZKY, Eleni FOTOPOULOU, Konstantin SCHMIDT, Conrad BENNDORF, Adrian TOMASEK, Tobias ALBERT, Timon SEIDL
  • Publication number: 20220051683
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Markus SCHNELL, Manfred LUTZKY, Eleni FOTOPOULOU, Konstantin SCHMIDT, Conrad BENNDORF, Adrian TOMASEK, Tobias ALBERT, Timon SEIDL
  • Publication number: 20220051682
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Inventors: Markus SCHNELL, Manfred LUTZKY, Eleni FOTOPOULOU, Konstantin SCHMIDT, Conrad BENNDORF, Adrian TOMASEK, Tobias ALBERT, Timon SEIDL
  • Patent number: 11238873
    Abstract: An apparatus for level estimation of an encoded audio signal is provided. The apparatus has a codebook determinator for determining a codebook from a plurality of codebooks as an identified codebook. The audio signal has been encoded by employing the identified codebook. Moreover, the apparatus has an estimation unit configured for deriving a level value associated with the identified codebook as a derived level value and for estimating a level estimate of the audio signal using the derived level value.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: February 1, 2022
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Ralf Geiger, Markus Schnell, Manfred Lutzky, Marco Diatschuk
  • Patent number: 11217261
    Abstract: In methods and apparatus and non-transitory memory units for encoding/decoding audio signal information, the encoder side may determine if a signal frame is useful for long term post filtering and/or packet lost concealment and may encode information in accordance to the results of the determination, and the decoder side may apply the LTPF and/or PLC in accordance to the information obtained from the encoder.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: January 4, 2022
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Emmanuel Ravelli, Adrian Tomasek, Manfred Lutzky, Conrad Benndorf
  • Publication number: 20210385012
    Abstract: A channel encoder for encoding a frame includes a multi-mode redundancy encoder for redundancy encoding the frame in accordance with a certain coding mode from a set of different coding modes, wherein the coding modes are different from each other with respect to an amount of redundancy added to the frame, wherein the multi-mode redundancy encoder is configured to output a coded frame including at least one code word; and a colorator for applying a coloration sequence to the at least one code word; wherein the coloration sequence is such that at least one bit of the code word is changed by the application of the at least one of coloration sequence, wherein the specific coloration sequence is selected in accordance with the certain coding mode.
    Type: Application
    Filed: August 13, 2021
    Publication date: December 9, 2021
    Inventors: Jan BUETHE, Conrad BENNDORF, Manfred LUTZKY, Markus SCHNELL, Maximilian SCHLEGEL
  • Publication number: 20210375295
    Abstract: An audio transmitter processor for generating an error protected frame using encoded audio data of an audio frame, the encoded audio data for the audio frame having a first amount of information units and a second amount of information units, has: a frame builder for building a codeword frame having a codeword raster, wherein the frame builder is configured to determine a border between a first amount of information units and a second amount of information units so that a starting information unit of the second amount of information units coincides with a codeword border; and an error protection coder to obtain a plurality of processed codewords representing the error protected frame.
    Type: Application
    Filed: August 12, 2021
    Publication date: December 2, 2021
    Inventors: Adrian TOMASEK, Ralph SPERSCHNEIDER, Jan BÜTHE, Alexander TSCHEKALINSKIJ, Manfred LUTZKY
  • Publication number: 20210335371
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Inventors: Markus SCHNELL, Manfred LUTZKY, Eleni FOTOPOULOU, Konstantin SCHMIDT, Conrad BENNDORF, Adrian TOMASEK, Tobias ALBERT, Timon SEIDL
  • Patent number: 11127408
    Abstract: In methods and apparatus for performing temporal noise shaping, an apparatus may have a temporal noise shaping, TNS, tool for performing linear prediction, LP, filtering on an information signal including a plurality of frames; and a controller configured to control the TNS tool so that the TNS tool performs LP filtering with: a first filter whose impulse response has a higher energy; and a second filter whose impulse response has a lower energy than the first filter, wherein the second filter is not an identity filter, wherein the controller is configured to choose between filtering with the first filter, and filtering with the second filter on the basis of a frame metrics.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: September 21, 2021
    Assignee: Fraunhofer—Gesellschaft zur F rderung der angewandten Forschung e.V.
    Inventors: Emmanuel Ravelli, Manfred Lutzky, Markus Schnell, Alexander Tschekalinskij, Goran Markovic, Stefan Geyersberger
  • Patent number: 11062719
    Abstract: A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: July 13, 2021
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Eleni Fotopoulou, Konstantin Schmidt, Conrad Benndorf, Adrian Tomasek, Tobias Albert, Timon Seidl
  • Patent number: 11056124
    Abstract: In methods and apparatus for performing temporal noise shaping, an apparatus may have a temporal noise shaping, TNS, tool for performing linear prediction, LP, filtering on an information signal including a plurality of frames; and a controller configured to control the TNS tool so that the TNS tool performs LP filtering with: a first filter whose impulse response has a higher energy; and a second filter whose impulse response has a lower energy than the first filter, wherein the second filter is not an identity filter, wherein the controller is configured to choose between filtering with the first filter, and filtering with the second filter on the basis of a frame metrics.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: July 6, 2021
    Assignee: Fraunhofer—Gesellschaft zur F rderung der angewandten Forschung e.V.
    Inventors: Emmanuel Ravelli, Manfred Lutzky, Markus Schnell, Alexander Tschekalinskij, Goran Markovic, Stefan Geyersberger
  • Patent number: 11043226
    Abstract: An apparatus for encoding an audio signal includes: a converter for converting the audio signal into a spectral representation; a scale parameter calculator for calculating a first set of scale parameters from the spectral representation: a downsampler for downsampling the first set of scale parameters to obtain a second set of scale parameters, a second number of scale parameters in the second set of scale parameters being lower than a first number of scale parameters in the first set of scale parameters; a scale parameter encoder for generating an encoded representation of the second set of scale parameters; a spectral processor for processing the spectral representation using a third set of scale parameters, the third set of scale parameters having a third number of scale parameters being greater than the second number of scale parameters, the spectral processor being configured to use the first set of scale parameters or to derive the third set of scale parameters from the second set of scale parameters o
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: June 22, 2021
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Emmanuel Ravelli, Markus Schnell, Conrad Benndorf, Manfred Lutzky, Martin Dietz, Srikanth Korse
  • Publication number: 20200272685
    Abstract: There are provided methods and apparatus for performing modified cosine transformation (MDCT) with an analysis/synthesis windowing function, using an analysis windowing function having a meandering portion which passes a linear function in correspondence of at least four points.
    Type: Application
    Filed: May 7, 2020
    Publication date: August 27, 2020
    Inventors: Markus SCHNELL, Manfred LUTZKY, Alexander TSCHEKALINSKIJ, Ralf GEIGER
  • Publication number: 20200265852
    Abstract: There are disclosed apparatus and methods for encoding and/or decoding information signals (e.g., audio signals). An encoder apparatus includes a plurality of frequency domain (FD) encoder tools for encoding an information signal, and an encoder bandwidth detector and controller configured to select a bandwidth for at least a subgroup of the FD encoder tools. The subgroup includes less FD encoder tools than the plurality of FD encoder tools. The selection is based on information signal characteristics, so that one of the FD encoder tools of the subgroup has a different bandwidth with respect to at least one of the FD encoder tools which are not in the subgroup.
    Type: Application
    Filed: May 4, 2020
    Publication date: August 20, 2020
    Inventors: Marku SCHNELL, Emmanuel RAVELLI, Conrad BENNDORF, Tobias ALBERT, Manfred LUTZKY, Adrian TOMASEK
  • Publication number: 20200265847
    Abstract: There are provided methods and apparatus for performing modified cosine transformation (MDCT) with an analysis/synthesis windowing function, using an analysis windowing function having a meandering portion which passes a linear function in correspondence of at least four points.
    Type: Application
    Filed: May 6, 2020
    Publication date: August 20, 2020
    Inventors: Markus SCHNELL, Manfred LUTZKY, Alexander TSCHEKALINSKIJ, Ralf GEIGER