Patents by Inventor Jeremie Lecomte
Jeremie Lecomte 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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Patent number: 11869514Abstract: 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: GrantFiled: April 15, 2020Date of Patent: January 9, 2024Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Michael Schnabel, Goran Markovic, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
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Publication number: 20240005935Abstract: 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: ApplicationFiled: July 5, 2023Publication date: January 4, 2024Inventors: Jérémie LECOMTE, Benjamin SCHUBERT, Michael SCHNABEL, Martin DIETZ
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Publication number: 20230402045Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: ApplicationFiled: August 16, 2023Publication date: December 14, 2023Inventors: Bernhard GRILL, Roch LEFEBVRE, Bruno BESSETTE, Jimmy LAPIERRE, Philippe GOURNAY, Redwan SALAMI, Stefan BAYER, Guillaume FUCHS, Stefan GEYERSBERGER, Ralf GEIGER, Johannes HILPERT, Ulrich KRAEMER, Jérémie LECOMTE, Markus MULTRUS, Max NEUENDORF, Harald POPP, Nikolaus RETTELBACH
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Patent number: 11823690Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: GrantFiled: September 20, 2022Date of Patent: November 21, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Bernhard Grill, Roch Lefebvre, Bruno Bessette, Jimmy Lapierre, Philippe Gournay, Redwan Salami, Stefan Bayer, Guillaume Fuchs, Stefan Geyersberger, Ralf Geiger, Johannes Hilpert, Ulrich Kraemer, Jérémie Lecomte, Markus Multrus, Max Neuendorf, Harald Popp, Nikolaus Rettelbach
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Patent number: 11776551Abstract: 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: GrantFiled: December 14, 2020Date of Patent: October 3, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Michael Schnabel, Markovic Goran, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich
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Publication number: 20230282221Abstract: An apparatus for generating an encoded signal includes: a window sequence controller for generating a window sequence information for windowing an audio or image signal, the window sequence information indicating a first window for generating a first frame of spectral values, a second window function and at least one third window function for generating a second frame of spectral values, wherein the first window function, the second window function and the one or more third window functions overlap within a multi-overlap region; a preprocessor for windowing a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function to acquire a second block of windowed samples, a spectrum converter for applying an aliasing-introducing transform; and a processor for processing the first frame and the second frame to acquire encoded frames of the audio or image signal.Type: ApplicationFiled: February 17, 2023Publication date: September 7, 2023Inventors: Christian HELMRICH, Jérémie LECOMTE, Goran MARKOVIC, Markus SCHNELL, Bernd EDLER, Stefan REUSCHL
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Patent number: 11735196Abstract: 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: GrantFiled: December 18, 2020Date of Patent: August 22, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Jérémie Lecomte, Benjamin Schubert, Michael Schnabel, Martin Dietz
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Publication number: 20230206931Abstract: A codec allowing for switching between different coding modes is improved by, responsive to a switching instance, performing temporal smoothing and/or blending at a respective transition.Type: ApplicationFiled: March 6, 2023Publication date: June 29, 2023Inventors: Martin DIETZ, Eleni FOTOPOULOU, Jérémie LECOMTE, Markus MULTRUS, Benjamin SCHUBERT
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Patent number: 11682404Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: GrantFiled: September 20, 2022Date of Patent: June 20, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Bernhard Grill, Roch Lefebvre, Bruno Bessette, Jimmy Lapierre, Philippe Gournay, Redwan Salami, Stefan Bayer, Guillaume Fuchs, Stefan Geyersberger, Ralf Geiger, Johannes Hilpert, Ulrich Kraemer, Jérémie Lecomte, Markus Multrus, Max Neuendorf, Harald Popp, Nikolaus Rettelbach
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Patent number: 11682408Abstract: An apparatus for generating an encoded signal includes: a window sequence controller for generating a window sequence information for windowing an audio or image signal, the window sequence information indicating a first window for generating a first frame of spectral values, a second window function and at least one third window function for generating a second frame of spectral values, wherein the first window function, the second window function and the one or more third window functions overlap within a multi-overlap region; a preprocessor for windowing a second block of samples corresponding to the second window function and the at least one third window functions using an auxiliary window function to acquire a second block of windowed samples, a spectrum converter for applying an aliasing-introducing transform; and a processor for processing the first frame and the second frame to acquire encoded frames of the audio or image signal.Type: GrantFiled: August 17, 2020Date of Patent: June 20, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Christian Helmrich, Jérémie Lecomte, Goran Markovic, Markus Schnell, Bernd Edler, Stefan Reuschl
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Patent number: 11676611Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: GrantFiled: September 20, 2022Date of Patent: June 13, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Bernhard Grill, Roch Lefebvre, Bruno Bessette, Jimmy Lapierre, Philippe Gournay, Redwan Salami, Stefan Bayer, Guillaume Fuchs, Stefan Geyersberger, Ralf Geiger, Johannes Hilpert, Ulrich Kraemer, Jérémie Lecomte, Markus Multrus, Max Neuendorf, Harald Popp, Nikolaus Rettelbach
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Patent number: 11621008Abstract: An apparatus for encoding an audio or image signal, includes: a controllable windower for windowing the audio or image signal to provide the sequence of blocks of windowed samples; a converter for converting the sequence of blocks of windowed samples into a spectral representation including a sequence of frames of spectral values; a transient location detector for identifying a location of a transient within a transient look-ahead region of a frame; and a controller for controlling the controllable windower to apply a specific window having a specified overlap length to the audio or image signal in response to an identified location of the transient, wherein the controller is configured to select the specific window from a group of at least three windows, wherein the specific window is selected based on the transient location.Type: GrantFiled: May 28, 2020Date of Patent: April 4, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Christian Helmrich, Jérémie Lecomte, Goran Markovic, Markus Schnell, Bernd Edler, Stefan Reuschl
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Patent number: 11600283Abstract: A codec allowing for switching between different coding modes is improved by, responsive to a switching instance, performing temporal smoothing and/or blending at a respective transition.Type: GrantFiled: June 29, 2020Date of Patent: March 7, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Martin Dietz, Eleni Fotopoulou, Jérémie Lecomte, Markus Multrus, Benjamin Schubert
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Patent number: 11580997Abstract: A jitter buffer control for controlling a provision of a decoded audio content on the basis of an input audio content is configured to select a frame-based time scaling or a sample-based time scaling in a signal-adaptive manner. An audio decoder uses such a jitter buffer control.Type: GrantFiled: June 11, 2020Date of Patent: February 14, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Reuschl, Stefan Doehla, Jérémie Lecomte, Manuel Jander
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Publication number: 20230011775Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: ApplicationFiled: September 20, 2022Publication date: January 12, 2023Inventors: Bernhard GRILL, Roch LEFEBVRE, Bruno BESSETTE, Jimmy LAPIERRE, Philippe GOURNAY, Redwan SALAMI, Stefan BAYER, Guillaume FUCHS, Stefan GEYERSBERGER, Ralf GEIGER, Johannes HILPERT, Ulrich KRAEMER, Jérémie LECOMTE, Markus MULTRUS, Max NEUENDORF, Harald POPP, Nikolaus RETTELBACH
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Publication number: 20230011987Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: ApplicationFiled: September 20, 2022Publication date: January 12, 2023Inventors: Bernhard GRILL, Roch LEFEBVRE, Bruno BESSETTE, Jimmy LAPIERRE, Philippe GOURNAY, Redwan SALAMI, Stefan BAYER, Guillaume FUCHS, Stefan GEYERSBERGER, Ralf GEIGER, Johannes HILPERT, Ulrich KRAEMER, Jérémie LECOMTE, Markus MULTRUS, Max NEUENDORF, Harald POPP, Nikolaus RETTELBACH
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Publication number: 20230009374Abstract: An audio encoder has a first information sink oriented encoding branch such as a spectral domain encoding branch, a second information source or SNR oriented encoding branch such as an LPC-domain encoding branch, and a switch for switching between the first and second encoding branches, the second encoding branch having a converter into a specific domain different from the spectral domain such as an LPC analysis stage generating an excitation signal, and the second encoding branch having a specific domain coding branch such as LPC domain processing branch, and a specific spectral domain coding branch such as LPC spectral domain processing branch, and an additional switch for switching between the specific domain coding branch and the specific spectral domain coding branch. An audio decoder has a first domain decoder, a second domain decoder, and a third domain decoder as well as two cascaded switches for switching between the decoders.Type: ApplicationFiled: September 20, 2022Publication date: January 12, 2023Inventors: Bernhard GRILL, Roch LEFEBVRE, Bruno BESSETTE, Jimmy LAPIERRE, Philippe GOURNAY, Redwan SALAMI, Stefan BAYER, Guillaume FUCHS, Stefan GEYERSBERGER, Ralf GEIGER, Johannes HILPERT, Ulrich KRAEMER, Jérémie LECOMTE, Markus MULTRUS, Max NEUENDORF, Harald POPP, Nikolaus RETTELBACH
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Apparatus and method realizing a fading of an MDCT spectrum to white noise prior to FDNS application
Patent number: 11501783Abstract: 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: GrantFiled: February 19, 2020Date of Patent: November 15, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Michael Schnabel, Goran Markovic, Ralph Sperschneider, Jérémie Lecomte, Christian Helmrich -
Publication number: 20220343924Abstract: An apparatus for determining an estimated pitch lag is provided. The apparatus includes an input interface for receiving a plurality of original pitch lag values, and a pitch lag estimator for estimating the estimated pitch lag. The pitch lag estimator is configured to estimate the estimated pitch lag depending on a plurality of original pitch lag values and depending on a plurality of information values, wherein for each original pitch lag value of the plurality of original pitch lag values, an information value of the plurality of information values is assigned to the original pitch lag value.Type: ApplicationFiled: June 30, 2022Publication date: October 27, 2022Inventors: Jeremie Lecomte, Michael Schnabel, Goran Markovic, Martin Dietz, Bernhard Neugebauer
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Patent number: 11475881Abstract: Techniques for speech processing using a deep neural network (DNN) based acoustic model front-end are described. A new modeling approach directly models multi-channel audio data received from a microphone array using a first model (e.g., multi-channel DNN) that takes in raw signals and produces a first feature vector that may be used similarly to beamformed features generated by an acoustic beamformer. A second model (e.g., feature extraction DNN) processes the first feature vector and transforms it to a second feature vector having a lower dimensional representation. A third model (e.g., classification DNN) processes the second feature vector to perform acoustic unit classification and generate text data. These three models may be jointly optimized for speech processing (as opposed to individually optimized for signal enhancement), enabling improved performance despite a reduction in microphones and a reduction in bandwidth consumption during real-time processing.Type: GrantFiled: July 17, 2020Date of Patent: October 18, 2022Assignee: Amazon Technologies, Inc.Inventors: Arindam Mandal, Kenichi Kumatani, Nikko Strom, Minhua Wu, Shiva Sundaram, Bjorn Hoffmeister, Jeremie Lecomte