Patents by Inventor Jens Popp
Jens Popp 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).
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Publication number: 20240096337Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Publication number: 20240096338Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Patent number: 11927211Abstract: Disclosed are a fastening system and a method for fastening a fastening element made of a first material to a substrate made of a substrate material. A blind hole is made in the substrate, and a fastening element is anchored in the blind hole. A shaft of the fastening element defines a fastening direction and has a circumferential surface which is slanted or stepped in relation to the fastening direction.Type: GrantFiled: April 18, 2018Date of Patent: March 12, 2024Assignee: Hilti AktiengesellschaftInventors: Uwe Popp, Simon Stahel, Jens Schneider
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Publication number: 20230274755Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: ApplicationFiled: May 10, 2023Publication date: August 31, 2023Applicant: DOLBY INTERNATIONAL ABInventors: Heiko Purnhagen, Kristofer Kjörling, Alexander Stahlmann, Jens Popp, Karl Jonas Roeden
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Publication number: 20230247382Abstract: An audio bitstream is decoded into audio objects and audio metadata for the audio objects. The audio objects include a specific audio object. The audio metadata specifies frame-level gains that include a first gain and a second gain respectively for a first audio frame and a second audio frame. It is determined, based on the first and second gains, whether sub-frame gains are to be generated for the specific audio object. If so, a ramp length is determined for a ramp used to generate the sub-frame gains for the specific audio object. The ramp of the ramp length is used to generate the sub-frame gains for the specific audio object. A sound field represented by the audio objects with the sub-frame gains is rendered by audio speakers.Type: ApplicationFiled: May 20, 2021Publication date: August 3, 2023Applicant: DOLBY INTERNATIONAL ABInventors: Jens POPP, Claus-Christian SPENGER, Celine MERPILLAT, Tobias MUELLER, Holger HOERICH
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Patent number: 11676622Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: GrantFiled: June 10, 2021Date of Patent: June 13, 2023Assignee: DOLBY INTERNATIONAL ABInventors: Heiko Purnhagen, Kristofer Kjoerling, Alexander Stahlmann, Jens Popp, Karl Jonas Roeden
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Publication number: 20210375304Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: ApplicationFiled: June 10, 2021Publication date: December 2, 2021Applicant: DOLBY INTERNATIONAL ABInventors: Heiko Purnhagen, Kristofer Kjoerling, Alexander Stahlmann, Jens Popp, Karl Jonas Roeden
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Patent number: 11037582Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: GrantFiled: February 23, 2018Date of Patent: June 15, 2021Assignee: Dolby International ABInventors: Heiko Purnhagen, Kristofer Kjoerling, Alexander Stahlmann, Jens Popp, Karl Jonas Roeden
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Publication number: 20210158827Abstract: The present document relates to time-alignment of encoded data of an audio encoder with associated metadata, such as spectral band replication (SBR) metadata. An audio decoder configured to determine a reconstructed frame of an audio signal from an access unit of a received data stream is described. The access unit comprises waveform data and metadata, wherein the waveform data and the metadata are associated with the same reconstructed frame of the audio signal. The audio decoder comprises a waveform processing path configured to generate a plurality of waveform subband signals from the waveform data, and a metadata processing path configured to generate decoded metadata from the metadata.Type: ApplicationFiled: October 2, 2020Publication date: May 27, 2021Applicant: DOLBY INTERNATIONAL ABInventors: Kristofer KJOERLING, Heiko PURNHAGEN, Jens POPP
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Patent number: 10811023Abstract: The present document relates to time-alignment of encoded data of an audio encoder with associated metadata, such as spectral band replication (SBR) metadata. An audio decoder configured to determine a reconstructed frame of an audio signal from an access unit of a received data stream is described. The access unit comprises waveform data and metadata, wherein the waveform data and the metadata are associated with the same reconstructed frame of the audio signal. The audio decoder comprises a waveform processing path configured to generate a plurality of waveform subband signals from the waveform data, and a metadata processing path configured to generate decoded metadata from the metadata.Type: GrantFiled: September 29, 2017Date of Patent: October 20, 2020Assignee: Dolby International ABInventors: Kristofer Kjoerling, Heiko Purnhagen, Jens Popp
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Patent number: 10510355Abstract: The present document relates to time-alignment of encoded data of an audio encoder with associated metadata, such as spectral band replication (SBR) metadata. An audio decoder (100, 300) configured to determine a reconstructed frame of an audio signal (237) from an access unit (110) of a received data stream is described. The access unit (110) comprises waveform data (111) and metadata (112), wherein the waveform data (111) and the metadata (112) are associated with the same reconstructed frame of the audio signal (127). The audio decoder (100, 300) comprises a waveform processing path (101, 102, 103, 104, 105) configured to generate a plurality of waveform subband signals (123) from the waveform data (111), and a metadata processing path (108, 109) configured to generate decoded metadata (128) from the metadata (111).Type: GrantFiled: September 8, 2014Date of Patent: December 17, 2019Assignee: Dolby International ABInventors: Kristofer Kjoerling, Heiko Purnhagen, Jens Popp
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Patent number: 10074382Abstract: The present document relates to the determination of a 200 bitrate related to an encoded bitstream, and describes a method for determining an estimate of a bitrate of a bitstream comprising a sequence of frames comprising a varying number of bitsand corresponding to excerpts of an audio and/or video signal. At least two frames of the sequence of frames comprise a parameter indicative of a processing delay for the corresponding frame. The method comprises determining: a total number of bits for a subsequence of frames from the bitstream; a corrected number 201 of frames based on a number of frames comprised within the subsequence and the parameters of at least two frames of the subsequence; and a lower bitrate bound and an upper bitrate bound of the bitrate based on the total number of bits, the corrected number of frames and a frame rate of the bitstream.Type: GrantFiled: November 27, 2014Date of Patent: September 11, 2018Assignee: Dolby International ABInventors: Holger Hoerich, Alexander Groeschel, Jens Popp, Marc Roessler, Malte Schmidt
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Publication number: 20180247660Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: ApplicationFiled: February 23, 2018Publication date: August 30, 2018Applicant: DOLBY INTERNATIONAL ABInventors: Heiko PURNHAGEN, Kristofer KJOERLING, Alexander STAHLMANN, Jens POPP, Karl Jonas ROEDEN
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Patent number: 9990935Abstract: The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.Type: GrantFiled: September 10, 2014Date of Patent: June 5, 2018Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Alexander Groeschel, Jens Popp, Martin Wolters, Jeffrey Riedmiller, Michael Ward, Karl Jonas Roeden, Holger Hoerich, Karsten Linzmeier, Tobias Friedrich
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Patent number: 9955278Abstract: The present document relates to the field of encoding and decoding of audio. In particular, the present document relates to encoding and decoding of an audio scene comprising audio objects. A method (400) for encoding metadata relating to a plurality of audio objects (106a) of an audio scene (102) is described. The metadata comprises a first set (114, 314) of metadata and a second set (104) of metadata. The first and second sets (104, 114, 314) of metadata comprise one or more data elements which are indicative of a property of an audio object (106a) from the plurality of audio objects (106a) and/or of a downmix signal (112) derived from the plurality of audio objects (106a). The method (400) comprises identifying (401) a redundant data element which is common to the first and second sets (104, 114, 314) of metadata.Type: GrantFiled: April 1, 2015Date of Patent: April 24, 2018Assignee: Dolby International ABInventors: Christof Fersch, Heiko Purnhagen, Jens Popp, Martin Wolters
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Patent number: 9911434Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: GrantFiled: April 4, 2014Date of Patent: March 6, 2018Assignee: Dolby International ABInventors: Heiko Purnhagen, Kristopher Kjoerling, Alexander Groeschel, Jens Popp, Karl Jonas Roeden
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Publication number: 20170013387Abstract: The present document relates to the field of encoding and decoding of audio. In particular, the present document relates to encoding and decoding of an audio scene comprising audio objects. A method (400) for encoding metadata relating to plurality of audio objects (106a) of an audio scene (102) is described. The metadata comprises a first set (114, 314) of metadata and a second set (104) of metadata. The first and second sets (104, 114, 314) of metadata comprise one or more data elements which are indicative of a property of an audio object (106a) from the plurality of audio objects (106a) and/or of a downmix signal (112) derived from the plurality of audio objects (106a). The method (400) comprises identifying (401) a redundant data element which is common to the first and second sets (104, 114, 314) of metadata.Type: ApplicationFiled: April 1, 2015Publication date: January 12, 2017Applicant: Dolby International ABInventors: Christof FERSCH, Heiko PURNHAGEN, Jens POPP, Martin WOLTERS
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Publication number: 20160300586Abstract: The present document relates to the determination of a 200 bitrate related to an encoded bitstream, and describes a method for determining an estimate of a bitrate of a bitstream comprising a sequence of frames comprising a varying number of bitsand corresponding to excerpts of an audio and/or video signal. At least two frames of the sequence of frames comprise a parameter indicative of a processing delay for the corresponding frame. The method comprises determining: a total number of bits for a subsequence of frames from the bitstream; a corrected number 201 of frames based on a number of frames comprised within the subsequence and the parameters of at least two frames of the subsequence; and a lower bitrate bound and an upper bitrate bound of the bitrate based on the total number of bits, the corrected number of frames and a frame rate of the bitstream.Type: ApplicationFiled: November 27, 2014Publication date: October 13, 2016Applicant: DOLBY INTERNATIONAL ABInventors: Holger HOERICHü, Alexander GROESCHEL, Jens POPP, Marc ROESSLER, Malte SCHMIDT
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Publication number: 20160055864Abstract: An audio processing system (100) accepts an audio bitstream having one of a plurality of predefined audio frame rates. The system comprises a front-end component (110), which receives a variable number of quantized spectral components, corresponding to one audio frame in any of the predefined audio frame rates, and performs an inverse quantization according to predetermined, frequency-dependent quantization levels. The front-end component may be agnostic of the audio frame rate. The audio processing system further comprises a frequency-domain processing stage (120) and a sample rate converter (130), which provide a reconstructed audio signal sampled at a target sampling frequency independent of the audio frame rate. By its frame-rate adaptability, the system can be configured to operate frame-synchronously in parallel with a video processing system that accepts plural video frame rates.Type: ApplicationFiled: April 4, 2014Publication date: February 25, 2016Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Heiko PURNHAGEN, Kristopher KJOERLING, Alexander GROESCHEL, Jens POPP, Karl Jonas ROEDEN
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Publication number: 20100306195Abstract: A system for creating queries for complex data structures includes a database populated with data relating to a manufacturing process and a graphical user interface accessed via a computer. The graphical user interface includes a tree domain and a query area, the tree domain including a tree representation of the data populating the database, wherein the tree representation includes graphical representations of attributes and/or structural-elements relating to the manufacturing process and populating the database. A mechanism is provided for dragging and dropping the graphical representations from the tree domain to the query area where the graphical representations are converted to a query based upon operators linking the graphical representations dragged and dropped from the tree domain.Type: ApplicationFiled: June 1, 2009Publication date: December 2, 2010Inventors: Andreas Wagener, Jens Popp, Dick Ortloff