Patents by Inventor Julien Robilliard
Julien Robilliard 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: 20170301356Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.Type: ApplicationFiled: June 29, 2017Publication date: October 19, 2017Inventors: Matthias NEUSINGER, Julien ROBILLIARD, Johannes HILPERT
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Patent number: 9734832Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.Type: GrantFiled: January 20, 2015Date of Patent: August 15, 2017Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Matthias Neusinger, Julien Robilliard, Johannes Hilpert
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Patent number: 9646624Abstract: An audio encoder has a low frequency encoder which encodes a low frequency portion of the input audio information to obtain an encoded representation of the low frequency portion, and a bandwidth extension information provider which provides bandwidth extension information. The audio encoder is configured to selectively include bandwidth extension information into the encoded audio information in a signal-adaptive manner.Type: GrantFiled: July 28, 2015Date of Patent: May 9, 2017Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Sascha Disch, Christian Helmrich, Johannes Hilpert, Julien Robilliard, Konstantin Schmidt, Stephan Wilde
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Publication number: 20170011751Abstract: An apparatus for generating loudspeaker signals includes an object metadata processor configured to receive metadata, to calculate a second position of the audio object depending on the first position of the audio object and on a size of a screen if the audio object is indicated in the metadata as being screen-related, to feed the first position of the audio object as the position information into the object renderer if the audio object is indicated in the metadata as being not screen-related, and to feed the second position of the audio object as the position information into the object renderer if the audio object is indicated in the metadata as being screen-related. The apparatus further includes an object renderer configured to receive an audio object and to generate the loudspeaker signals depending on the audio object and on position information.Type: ApplicationFiled: September 23, 2016Publication date: January 12, 2017Inventors: Simone FUEG, Jan PLOGSTIES, Sascha DICK, Johannes HILPERT, Julien ROBILLIARD, Achim KUNTZ, Andreas HOELZER
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Publication number: 20150332702Abstract: An audio encoder has a low frequency encoder which encodes a low frequency portion of the input audio information to obtain an encoded representation of the low frequency portion, and a bandwidth extension information provider which provides bandwidth extension information. The audio encoder is configured to selectively include bandwidth extension information into the encoded audio information in a signal-adaptive manner.Type: ApplicationFiled: July 28, 2015Publication date: November 19, 2015Inventors: Sascha DISCH, Christian HELMRICH, Johannes HILPERT, Julien ROBILLIARD, Konstantin SCHMIDT, Stephan WILDE
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Patent number: 9099078Abstract: An upmixer for upmixing a downmix audio signal into an upmixed audio signal describing one or more upmixed audio channels includes a parameter applier configured to apply upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The parameter applier is configured to apply a phase shift to the downmix audio signal to obtain a phase-shifted version of the downmix audio signal, while leaving a decorrelated signal unmodified by the phase shift. The parameter applier is further configured to combine the phase-shifted version of the downmix audio signal with the decorrelated signal to obtain the upmixed audio signal.Type: GrantFiled: July 26, 2011Date of Patent: August 4, 2015Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Matthias Neusinger, Julien Robilliard, Johannes Hilpert
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Patent number: 9076433Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: November 28, 2012Date of Patent: July 7, 2015Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jeremie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: 9053700Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.Type: GrantFiled: June 2, 2011Date of Patent: June 9, 2015Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Matthias Neusinger, Julien Robilliard, Johannes Hilpert
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Patent number: 9043215Abstract: An audio encoder for encoding an audio signal has a first coding branch, the first coding branch comprising a first converter for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder has a second coding branch comprising a second time/frequency converter. Additionally, a signal analyzer for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.Type: GrantFiled: December 6, 2012Date of Patent: May 26, 2015Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Max Neuendorf, Stefan Bayer, Jeremie Lecomte, Guillaume Fuchs, Julien Robilliard, Nikolaus Rettelbach, Frederik Nagel, Ralf Geiger, Markus Multrus, Bernhard Grill, Philippe Gournay, Redwan Salami
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Publication number: 20150131801Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.Type: ApplicationFiled: January 20, 2015Publication date: May 14, 2015Inventors: Matthias NEUSINGER, Julien ROBILLIARD, Johannes HILPERT
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Patent number: 8867753Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also includes a parameter interpolator, wherein the parameter interpolator is configured to obtain one or more temporally interpolated upmix parameters to be used by the upmixer on the basis of a first complex-valued upmix parameter and a subsequent second complex-valued upmix parameter.Type: GrantFiled: July 25, 2011Date of Patent: October 21, 2014Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V..Inventors: Matthias Neusinger, Julien Robilliard, Johannes Hilpert
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Patent number: 8494865Abstract: An audio decoder for providing a decoded audio information on the basis of an entropy encoded audio information includes a context-based entropy decoder configured to decode the entropy-encoded audio information in dependence on a context, which context is based on a previously-decoded audio information in a non-reset state-of-operation. The context-based entropy decoder is configured to select a mapping information, for deriving the decoded audio information from the encoded audio information, in dependence on the context. The context-based entropy decoder includes a context resetter configured to reset the context for selecting the mapping information to a default context, which default context is independent from the previously-decoded audio information, in response to a side information of the encoded audio information.Type: GrantFiled: April 6, 2011Date of Patent: July 23, 2013Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Guillaume Fuchs, Markus Multrus, Ralf Geiger, Arne Borsum, Frederik Nagel, Julien Robilliard, Vignesh Subbaraman, Jeremie Lecomte
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Audio decoder, audio encoder, methods for decoding and encoding an audio signal and computer program
Patent number: 8457975Abstract: An audio decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a linear-prediction-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of linear-prediction domain parameters associated with the audio frame and a frequency-domain decoder core configured to provide a time-domain representation of an audio frame on the basis of a set of frequency-domain parameters, taking into account a transform window out of a set comprising a plurality of different transform windows. The audio decoder comprises a signal combiner configured to overlap-and-add-time-domain representations of subsequent audio frames encoded in different domains, in order to smoothen a transition between the time-domain representations of the subsequent frames.Type: GrantFiled: January 27, 2010Date of Patent: June 4, 2013Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Max Neuendorf, Jeremie Lecomte, Markus Multrus, Stefan Bayer, Frederik Nagel, Guillaume Fuchs, Julien Robilliard, Nikolaus Rettelbach, Ralf Geiger, Bernhard Grill -
Patent number: 8447620Abstract: An audio encoder for encoding an audio signal has a first coding branch, the first coding branch comprising a first converter for converting a signal from a time domain into a frequency domain. Furthermore, the audio encoder has a second coding branch comprising a second time/frequency converter. Additionally, a signal analyzer for analyzing the audio signal is provided. The signal analyzer, on the hand, determines whether an audio portion is effective in the encoder output signal as a first encoded signal from the first encoding branch or as a second encoded signal from a second encoding branch. On the other hand, the signal analyzer determines a time/frequency resolution to be applied by the converters when generating the encoded signals. An output interface includes, in addition to the first encoded signal and the second encoded signal, a resolution information identifying the resolution used by the first time/frequency converter and used by the second time/frequency converter.Type: GrantFiled: April 6, 2011Date of Patent: May 21, 2013Assignees: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V., Voiceage CorporationInventors: Max Neuendorf, Stefan Bayer, Jérémie Lecomte, Guillaume Fuchs, Julien Robilliard, Nikolaus Rettelbach, Frederik Nagel, Ralf Geiger, Markus Multrus, Bernhard Grill, Philippe Gournay, Redwan Salami
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Patent number: 8386268Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: GrantFiled: May 13, 2011Date of Patent: February 26, 2013Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Markus Multrus, Jeremie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Patent number: 8255228Abstract: An efficient encoded representation of a first and a second input audio signal can be derived using correlation information indicating a correlation between the first and the second input audio signals, when a signal characterization information, indicating at least a first or a second, different characteristic of the input audio signal is additionally considered. Phase information indicating a phase relation between the first and the second input audio signals is derived, when the input audio signals have the first characteristic. The phase information and a correlation measure are included into the encoded representation when the input audio signals have the first characteristic, and only the correlation information is included into the encoded representation when the input audio signals have the second characteristic.Type: GrantFiled: January 11, 2011Date of Patent: August 28, 2012Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Johannes Hilpert, Bernhard Grill, Matthias Neusinger, Julien Robilliard, Maria Luis-Valero
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Publication number: 20120020499Abstract: An upmixer for upmixing a downmix audio signal into an upmixed audio signal describing one or more upmixed audio channels includes a parameter applier configured to apply upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The parameter applier is configured to apply a phase shift to the downmix audio signal to obtain a phase-shifted version of the downmix audio signal, while leaving a decorrelated signal unmodified by the phase shift. The parameter applier is further configured to combine the phase-shifted version of the downmix audio signal with the decorrelated signal to obtain the upmixed audio signal.Type: ApplicationFiled: July 26, 2011Publication date: January 26, 2012Inventors: Matthias Neusinger, Julien Robilliard, Johannes Hilpert
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Publication number: 20110317842Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also includes a parameter interpolator, wherein the parameter interpolator is configured to obtain one or more temporally interpolated upmix parameters to be used by the upmixer on the basis of a first complex-valued upmix parameter and a subsequent second complex-valued upmix parameter.Type: ApplicationFiled: July 25, 2011Publication date: December 29, 2011Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Matthias NEUSINGER, Julien ROBILLIARD, Johannes HILPERT
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Publication number: 20110282675Abstract: An apparatus for generating a synthesis audio signal using a patching control signal has a first converter, a spectral domain patch generator, a high frequency reconstruction manipulator and a combiner. The first converter is configured for converting a time portion of an audio signal into a spectral representation. The spectral domain patch generator is configured for performing a plurality of different spectral domain patching algorithms, wherein each patching algorithm generates a modified spectral representation having spectral components in an upper frequency band derived from corresponding spectral components in a core frequency band of the audio signal.Type: ApplicationFiled: May 13, 2011Publication date: November 17, 2011Inventors: Frederik Nagel, Markus Multrus, Jeremie Lecomte, Stefan Bayer, Guillaume Fuchs, Johannes Hilpert, Julien Robilliard
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Publication number: 20110255714Abstract: An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.Type: ApplicationFiled: June 2, 2011Publication date: October 20, 2011Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Matthias NEUSINGER, Julien ROBILLIARD, Johannes HILPERT