Patents by Inventor Thorsten Kastner

Thorsten Kastner 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: 10818301
    Abstract: A decoder is provided. The decoder includes a parametric decoding unit for generating a plurality of first estimated audio object signals by upmixing three or more downmix signals, wherein the three or more downmix signals encode a plurality of original audio object signals, wherein the parametric decoding unit is configured to upmix the three or more downmix signals depending on parametric side information indicating information on the plurality of original audio object signals. Moreover, the decoder includes a residual processing unit for generating a plurality of second estimated audio object signals by modifying one or more of the first estimated audio object signals, wherein the residual processing unit is configured to modify the one or more of the first estimated audio object signals depending on one or more residual signals.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: October 27, 2020
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Thorsten Kastner, Juergen Herre, Jouni Paulus, Leon Terentiv, Oliver Hellmuth, Harald Fuchs
  • Patent number: 10497375
    Abstract: An apparatus for adapting input audio information, encoding one or more audio objects, to obtain adapted audio information is provided. The input audio information includes two or more input audio downmix channels and further includes input parametric side information. The adapted audio information includes one or more adapted audio downmix channels and further includes adapted parametric side information. The apparatus includes a downmix signal modifier for adapting, depending on adaptation information, the two or more input audio downmix channels to obtain the one or more adapted audio downmix channels. Moreover, the apparatus includes a parametric side information adapter for adapting, depending on the adaptation information, the input parametric side information to obtain the adapted parametric side information.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: December 3, 2019
    Assignee: Fraunhofer—Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Thorsten Kastner, Juergen Herre, Leon Terentiv, Oliver Hellmuth, Jouni Paulus, Falko Ridderbusch
  • Patent number: 10482888
    Abstract: An apparatus for encoding one or more audio objects to obtain an encoded signal is provided. The apparatus includes a for downmixing the one or more audio objects to obtain one or more unprocessed downmix signals. Moreover, the apparatus includes a processing module and a signal calculator. The signal calculator is configured to calculate each of one or more additional signals based on a difference between one of one or more processed downmix signals and one of the one or more unprocessed downmix signals. Moreover, the apparatus includes an object information generator. Furthermore, the apparatus includes an output interface for outputting the encoded signal. Moreover, a corresponding apparatus for decoding is provided.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: November 19, 2019
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Thorsten Kastner, Juergen Herre, Falko Ridderbusch, Cornelia Falch
  • Publication number: 20190013031
    Abstract: An audio decoder is proposed for decoding a multi-object audio signal including a downmix signal X and side information PSI. The side information includes object-specific side information PSIi for an audio object si in a time/frequency region R(tR,fR), and object-specific time/frequency resolution information TFRIi indicative of an object-specific time/frequency resolution TFRh of the object-specific side information for the audio object si in the time/frequency region R(tR,fR). The audio decoder includes an object-specific time/frequency resolution determiner 110 configured to determine the object-specific time/frequency resolution information TFRIi from the side information PSI for the audio object si. The audio decoder further includes an object separator 120 configured to separate the audio object si from the downmix signal X using the object-specific side information in accordance with the object-specific time/frequency resolution TFRIi.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Inventors: Sascha Disch, Jouni Paulus, Thorsten Kastner
  • Patent number: 10176812
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal having three or more downmix channels, wherein the downmix signal encodes three or more audio object signals is provided. The decoder includes an input channel router and at least two channel processing units. Each channel processing unit of the at least two channel processing units is configured to generate one or more of at least two processed channels depending on side information and depending on one or more of the three or more downmix channels received by the channel processing unit from the input channel router.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 8, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Thorsten Kastner, Juergen Herre, Leon Terentiv, Oliver Hellmuth
  • Patent number: 10152978
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal is provided. The downmix signal encodes one or more audio object signals. The decoder has a control unit. Moreover, the decoder has a first analysis module for transforming the downmix signal to obtain a first transformed downmix having a plurality of first subband channels. Furthermore, the decoder has a second analysis module for generating, when an activation indication is set to the activation state, a second transformed downmix. Moreover, the decoder has an un-mixing unit, wherein the un-mixing unit is configured to un-mix the second transformed downmix. Furthermore, an encoder is provided.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: December 11, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Jouni Paulus, Bernd Edler, Oliver Hellmuth, Juergen Herre, Thorsten Kastner
  • Patent number: 10096325
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal having one or more downmix channels is provided. The downmix signal encodes one or more audio object signals. The decoder has a threshold determiner for determining a threshold value depending on a signal energy and/or a noise energy of at least one of the of or more audio object signals and/or depending on a signal energy and/or a noise energy of at least one of the one or more downmix channels. Moreover, the decoder has a processing unit for generating the one or more audio output channels from the one or more downmix channels depending on the threshold value, by computing eigenvalues of a downmix channel cross correlation matrix, wherein each eigenvalue except largest eigenvalue is compared to the threshold value, and omitted if they are smaller.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: October 9, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Leon Terentiv, Oliver Hellmuth, Juergen Herre, Thorsten Kastner
  • Patent number: 10089990
    Abstract: An audio decoder is proposed for decoding a multi-object audio signal including a downmix signal X and side information PSI. The side information includes object-specific side information PSIi for an audio object si in a time/frequency region R(tR,fR), and object-specific time/frequency resolution information TFRIi indicative of an object-specific time/frequency resolution TFRh of the object-specific side information for the audio object si in the time/frequency region R(tR,fR). The audio decoder includes an object-specific time/frequency resolution determiner 110 configured to determine the object-specific time/frequency resolution information TFRIi from the side information PSI for the audio object si. The audio decoder further includes an object separator 120 configured to separate the audio object si from the downmix signal X using the object-specific side information in accordance with the object-specific time/frequency resolution TFRIi.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: October 2, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Jouni Paulus, Thorsten Kastner
  • Patent number: 9786285
    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: Grant
    Filed: April 10, 2014
    Date of Patent: October 10, 2017
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Dolby International AB, Friedrich-Alexander-Universitaet Erlangen-Nuernberg
    Inventors: Juergen Herre, Andreas Hoelzer, Leonid Terentiev, Thorsten Kastner, Cornelia Falch, Heiko Purnhagen, Jonas Engdegard, Falko Ridderbusch
  • Patent number: 9734833
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal having a plurality of time-domain downmix samples is provided. The downmix signal encodes two or more audio object signals. The decoder has a window-sequence generator for determining a plurality of analysis windows, each having a plurality of time-domain downmix samples of the downmix signal and a window length indicating the number of the time-domain downmix samples. Moreover, the decoder has a t/f-analysis module for transforming the plurality of time-domain downmix samples of each analysis window from a time-domain to a time-frequency domain depending on the window length of said analysis window, to obtain a transformed downmix. Furthermore, the decoder has an un-mixing unit for un-mixing the transformed downmix based on parametric side information on the two or more audio object signals to obtain the audio output signal. Moreover, an encoder is provided.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: August 15, 2017
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Sascha Disch, Jouni Paulus, Bernd Edler, Oliver Hellmuth, Juergen Herre, Thorsten Kastner
  • Publication number: 20160064006
    Abstract: An audio decoder is proposed for decoding a multi-object audio signal including a downmix signal X and side information PSI. The side information includes object-specific side information PSIi for an audio object si in a time/frequency region R(tR,fR), and object-specific time/frequency resolution information TFRIi indicative of an object-specific time/frequency resolution TFRh of the object-specific side information for the audio object si in the time/frequency region R(tR,fR). The audio decoder includes an object-specific time/frequency resolution determiner 110 configured to determine the object-specific time/frequency resolution information TFRIi from the side information PSI for the audio object si. The audio decoder further includes an object separator 120 configured to separate the audio object si from the downmix signal X using the object-specific side information in accordance with the object-specific time/frequency resolution TFRIi.
    Type: Application
    Filed: November 12, 2015
    Publication date: March 3, 2016
    Inventors: Sascha Disch, Jouni Paulus, Thorsten Kastner
  • Publication number: 20150348559
    Abstract: An apparatus for encoding one or more audio objects to obtain an encoded signal is provided. The apparatus includes a for downmixing the one or more audio objects to obtain one or more unprocessed downmix signals. Moreover, the apparatus includes a processing module and a signal calculator. The signal calculator is configured to calculate each of one or more additional signals based on a difference between one of one or more processed downmix signals and one of the one or more unprocessed downmix signals. Moreover, the apparatus includes an object information generator. Furthermore, the apparatus includes an output interface for outputting the encoded signal. Moreover, a corresponding apparatus for decoding is provided.
    Type: Application
    Filed: July 14, 2015
    Publication date: December 3, 2015
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Thorsten KASTNER, Juergen HERRE, Falko RIDDERBUSCH, Cornelia FALCH
  • Publication number: 20150279377
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal having a plurality of time-domain downmix samples is provided. The downmix signal encodes two or more audio object signals. The decoder has a window-sequence generator for determining a plurality of analysis windows, each having a plurality of time-domain downmix samples of the downmix signal and a window length indicating the number of the time-domain downmix samples. Moreover, the decoder has a t/f-analysis module for transforming the plurality of time-domain downmix samples of each analysis window from a time-domain to a time-frequency domain depending on the window length of said analysis window, to obtain a transformed downmix. Furthermore, the decoder has an un-mixing unit for un-mixing the transformed downmix based on parametric side information on the two or more audio object signals to obtain the audio output signal. Moreover, an encoder is provided.
    Type: Application
    Filed: April 3, 2015
    Publication date: October 1, 2015
    Inventors: Sascha DISCH, Jouni PAULUS, Bernd EDLER, Oliver HELLMUTH, Juergen HERRE, Thorsten KASTNER
  • Publication number: 20150221314
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal is provided. The downmix signal encodes one or more audio object signals. The decoder has a control unit. Moreover, the decoder has a first analysis module for transforming the downmix signal to obtain a first transformed downmix having a plurality of first subband channels. Furthermore, the decoder has a second analysis module for generating, when an activation indication is set to the activation state, a second transformed downmix Moreover, the decoder has an un-mixing unit, wherein the un-mixing unit is configured to un-mix the second transformed downmix Furthermore, an encoder is provided.
    Type: Application
    Filed: March 27, 2015
    Publication date: August 6, 2015
    Inventors: Sascha DISCH, Jouni PAULUS, Bernd EDLER, Oliver HELLMUTH, Juergen HERRE, Thorsten KASTNER
  • Publication number: 20150162012
    Abstract: A decoder is provided. The decoder includes a parametric decoding unit for generating a plurality of first estimated audio object signals by upmixing three or more downmix signals, wherein the three or more downmix signals encode a plurality of original audio object signals, wherein the parametric decoding unit is configured to upmix the three or more downmix signals depending on parametric side information indicating information on the plurality of original audio object signals. Moreover, the decoder includes a residual processing unit for generating a plurality of second estimated audio object signals by modifying one or more of the first estimated audio object signals, wherein the residual processing unit is configured to modify the one or more of the first estimated audio object signals depending on one or more residual signals.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 11, 2015
    Inventors: Thorsten KASTNER, Juergen HERRE, Jouni PAULUS, Leon TERENTIV, Oliver HELLMUTH, Harald FUCHS
  • Publication number: 20150154968
    Abstract: An apparatus for adapting input audio information, encoding one or more audio objects, to obtain adapted audio information is provided. The input audio information includes two or more input audio downmix channels and further includes input parametric side information. The adapted audio information includes one or more adapted audio downmix channels and further includes adapted parametric side information. The apparatus includes a downmix signal modifier for adapting, depending on adaptation information, the two or more input audio downmix channels to obtain the one or more adapted audio downmix channels. Moreover, the apparatus includes a parametric side information adapter for adapting, depending on the adaptation information, the input parametric side information to obtain the adapted parametric side information.
    Type: Application
    Filed: February 6, 2015
    Publication date: June 4, 2015
    Inventors: Thorsten KASTNER, Juergen HERRE, Leon TERENTIV, Oliver HELLMUTH, Jouni PAULUS, Falko RIDDERBUSCH
  • Publication number: 20150149187
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal having three or more downmix channels, wherein the downmix signal encodes three or more audio object signals is provided. The decoder includes an input channel router and at least two channel processing units. Each channel processing unit of the at least two channel processing units is configured to generate one or more of at least two processed channels depending on side information and depending on one or more of the three or more downmix channels received by the channel processing unit from the input channel router.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Thorsten KASTNER, Juergen HERRE, Leon TERENTIV, Oliver HELLMUTH
  • Publication number: 20150142427
    Abstract: A decoder for generating an audio output signal having one or more audio output channels from a downmix signal having one or more downmix channels is provided. The downmix signal encodes one or more audio object signals. The decoder has a threshold determiner for determining a threshold value depending on a signal energy and/or a noise energy of at least one of the of or more audio object signals and/or depending on a signal energy and/or a noise energy of at least one of the one or more downmix channels. Moreover, the decoder has a processing unit for generating the one or more audio output channels from the one or more downmix channels depending on the threshold value.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 21, 2015
    Inventors: Leon TERENTIV, Oliver HELLMUTH, Juergen HERRE, Thorsten KASTNER
  • Publication number: 20140229187
    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: April 10, 2014
    Publication date: August 14, 2014
    Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Dolby International AB, Friedrich-Alexander-Universitaet Erlangen-Nuernberg
    Inventors: Juergen HERRE, Andreas HOELZER, Leonid TERENTIEV, Thorsten KASTNER, Cornelia FALCH, Heiko PURNHAGEN, Jonas ENGDEGARD, Falko RIDDERBUSCH
  • Patent number: 8731209
    Abstract: In order to generate a multi-channel signal having a number of output channels greater than a number of input channels, a mixer is used for upmixing the input signal to form at least a direct channel signal and at least an ambience channel signal. A speech detector is provided for detecting a section of the input signal, the direct channel signal or the ambience channel signal in which speech portions occur. Based on this detection, a signal modifier modifies the input signal or the ambience channel signal in order to attenuate speech portions in the ambience channel signal, whereas such speech portions in the direct channel signal are attenuated to a lesser extent or not at all. A loudspeaker signal outputter then maps the direct channel signals and the ambience channel signals to loudspeaker signals which are associated to a defined reproduction scheme, such as, for example, a 5.1 scheme.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: May 20, 2014
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Christian Uhle, Oliver Hellmuth, Juergen Herre, Harald Popp, Thorsten Kastner