Patents by Inventor Grzegorz Pietrzyk
Grzegorz Pietrzyk 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: 20240135943Abstract: A method is described that processes an audio signal. A discontinuity between a filtered past frame and a filtered current frame of the audio signal is removed using linear predictive filtering.Type: ApplicationFiled: December 12, 2023Publication date: April 25, 2024Inventors: Emmanuel RAVELLI, Manuel JANDER, Grzegorz PIETRZYK, Martin DIETZ, Marc GAYER
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Audio decoder, method and computer program using a zero-input-response to obtain a smooth transition
Patent number: 11922961Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.Type: GrantFiled: September 20, 2021Date of Patent: March 5, 2024Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert -
AUDIO DECODER, METHOD AND COMPUTER PROGRAM USING A ZERO-INPUT-RESPONSE TO OBTAIN A SMOOTH TRANSITION
Publication number: 20240046941Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.Type: ApplicationFiled: October 19, 2023Publication date: February 8, 2024Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert -
Patent number: 11869525Abstract: A method is described that processes an audio signal. A discontinuity between a filtered past frame and a filtered current frame of the audio signal is removed using linear predictive filtering.Type: GrantFiled: February 3, 2022Date of Patent: January 9, 2024Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.Inventors: Emmanuel Ravelli, Manuel Jander, Grzegorz Pietrzyk, Martin Dietz, Marc Gayer
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Patent number: 11830511Abstract: Audio decoder device for decoding a bitstream, the audio decoder device including: a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder includes a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder includes a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame; a memory device including one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, fType: GrantFiled: August 5, 2022Date of Patent: November 28, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Doehla, Guillaume Fuchs, Bernhard Grill, Markus Multrus, Grzegorz Pietrzyk, Emmanuel Ravelli, Markus Schnell
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Publication number: 20230335147Abstract: A method is described that processes an audio signal. A discontinuity between a filtered past frame and a filtered current frame of the audio signal is removed using linear predictive filtering.Type: ApplicationFiled: June 22, 2023Publication date: October 19, 2023Inventors: Emmanuel RAVELLI, Manuel JANDER, Grzegorz PIETRZYK, Martin DIETZ, Marc GAYER
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Publication number: 20230022258Abstract: Audio decoder device for decoding a bitstream, the audio decoder device including: a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder includes a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder includes a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame; a memory device including one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, fType: ApplicationFiled: August 5, 2022Publication date: January 26, 2023Inventors: Stefan DOEHLA, Guillaume FUCHS, Bernhard GRILL, Markus MULTRUS, Grzegorz PIETRZYK, Emmanuel RAVELLI, Markus SCHNELL
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Patent number: 11443754Abstract: Audio decoder device for decoding a bitstream, the audio decoder device including: a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder includes a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder includes a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame; a memory device including one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, fType: GrantFiled: August 18, 2020Date of Patent: September 13, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Doehla, Guillaume Fuchs, Bernhard Grill, Markus Multrus, Grzegorz Pietrzyk, Emmanuel Ravelli, Markus Schnell
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Publication number: 20220157328Abstract: A method is described that processes an audio signal. A discontinuity between a filtered past frame and a filtered current frame of the audio signal is removed using linear predictive filtering.Type: ApplicationFiled: February 3, 2022Publication date: May 19, 2022Inventors: Emmanuel RAVELLI, Manuel JANDER, Grzegorz PIETRZYK, Martin DIETZ, Marc GAYER
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Publication number: 20220148609Abstract: A method is described that processes an audio signal. A discontinuity between a filtered past frame and a filtered current frame of the audio signal is removed using linear predictive filtering.Type: ApplicationFiled: January 20, 2022Publication date: May 12, 2022Inventors: Emmanuel RAVELLI, Manuel JANDER, Grzegorz PIETRZYK, Martin DIETZ, Marc GAYER
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AUDIO DECODER, METHOD AND COMPUTER PROGRAM USING A ZERO-INPUT-RESPONSE TO OBTAIN A SMOOTH TRANSITION
Publication number: 20220076685Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.Type: ApplicationFiled: September 20, 2021Publication date: March 10, 2022Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert -
Patent number: 11244694Abstract: A method is described that processes an audio signal. A discontinuity between a filtered past frame and a filtered current frame of the audio signal is removed using linear predictive filtering.Type: GrantFiled: January 23, 2017Date of Patent: February 8, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Manuel Jander, Grzegorz Pietrzyk, Martin Dietz, Marc Gayer
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Audio decoder, method and computer program using a zero-input-response to obtain a smooth transition
Patent number: 11170797Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information is disclosed. The audio decoder includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.Type: GrantFiled: May 31, 2019Date of Patent: November 9, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert -
Audio decoder, method and computer program using a zero-input-response to obtain a smooth transition
Patent number: 11127411Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information is disclosed. The audio decoder includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.Type: GrantFiled: May 31, 2019Date of Patent: September 21, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert -
Publication number: 20200381001Abstract: Audio decoder device for decoding a bitstream, the audio decoder device including: a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder includes a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder includes a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame; a memory device including one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, fType: ApplicationFiled: August 18, 2020Publication date: December 3, 2020Inventors: Stefan DOEHLA, Guillaume FUCHS, Bernhard GRILL, Markus MULTRUS, Grzegorz PIETRZYK, Emmanuel RAVELLI, Markus SCHNELL
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Publication number: 20200344476Abstract: Embodiments of the present invention provide an encoder including a quantization stage, an entropy encoder, a residual quantization stage and a coded signal former. The quantization stage is configured to quantize an input signal using a dead zone in order to obtain a plurality of quantized values. The entropy encoder is configured to encode the plurality of quantized values using an entropy encoding scheme in order to obtain a plurality of entropy encoded values. The residual quantization stage is configured to quantize a residual signal caused by the quantization stage, wherein the residual quantization stage is configured to determine at least one quantized residual value in dependence on the dead zone of the quantization stage. The coded signal former is configured to form a coded signal from the plurality of entropy encoded values and the at least one quantized residual value.Type: ApplicationFiled: July 8, 2020Publication date: October 29, 2020Inventors: Guillaume FUCHS, Benjamin SCHUBERT, Grzegorz PIETRZYK, Markus MULTRUS, Bernhard GRILL
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Patent number: 10783898Abstract: Audio decoder device for decoding a bitstream, the audio decoder device including: a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder includes a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder includes a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame; a memory device including one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, fType: GrantFiled: February 10, 2017Date of Patent: September 22, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Doehla, Guillaume Fuchs, Bernhard Grill, Markus Multrus, Grzegorz Pietrzyk, Emmanuel Ravelli, Markus Schnell
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Patent number: 10735734Abstract: Embodiments of the present invention provide an encoder including a quantization stage, an entropy encoder, a residual quantization stage and a coded signal former. The quantization stage is configured to quantize an input signal using a dead zone in order to obtain a plurality of quantized values. The entropy encoder is configured to encode the plurality of quantized values using an entropy encoding scheme in order to obtain a plurality of entropy encoded values. The residual quantization stage is configured to quantize a residual signal caused by the quantization stage, wherein the residual quantization stage is configured to determine at least one quantized residual value in dependence on the dead zone of the quantization stage. The coded signal former is configured to form a coded signal from the plurality of entropy encoded values and the at least one quantized residual value.Type: GrantFiled: June 21, 2019Date of Patent: August 4, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Guillaume Fuchs, Benjamin Schubert, Grzegorz Pietrzyk, Markus Multrus, Bernhard Grill
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Patent number: 10734008Abstract: An apparatus for generating an audio signal envelope from one or more coding values is provided. The apparatus includes an input interface for receiving the one or more coding values, and an envelope generator for generating the audio signal envelope depending on the one or more coding values. The envelope generator is configured to generate an aggregation function depending on the one or more coding values, wherein the aggregation function includes a plurality of aggregation points. Furthermore, the envelope generator is configured to generate the audio signal envelope such that the envelope value of each of the envelope points of the audio signal envelope depends on the aggregation value of at least one aggregation point of the aggregation function.Type: GrantFiled: March 13, 2018Date of Patent: August 4, 2020Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Tom Baeckstroem, Benjamin Schubert, Markus Multrus, Sascha Disch, Konstantin Schmidt, Grzegorz Pietrzyk
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AUDIO DECODER, METHOD AND COMPUTER PROGRAM USING A ZERO-INPUT-RESPONSE TO OBTAIN A SMOOTH TRANSITION
Publication number: 20200160874Abstract: An audio decoder for providing a decoded audio information on the basis of an encoded audio information is disclosed. The audio decoder includes a linear-prediction-domain decoder configured to provide a first decoded audio information on the basis of an audio frame encoded in a linear prediction domain, a frequency domain decoder configured to provide a second decoded audio information on the basis of an audio frame encoded in a frequency domain, and a transition processor. The transition processor is configured to obtain a zero-input-response of a linear predictive filtering, wherein an initial state of the linear predictive filtering is defined depending on the first decoded audio information and the second decoded audio information, and modify the second decoded audio information depending on the zero-input-response, to obtain a smooth transition between the first and the modified second decoded audio information.Type: ApplicationFiled: May 31, 2019Publication date: May 21, 2020Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Emmanuel Ravelli, Guillaume Fuchs, Sascha Disch, Markus Multrus, Grzegorz Pietrzyk, Benjamin Schubert