Patents by Inventor Alexandre Guerin
Alexandre Guerin 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: 20240278627Abstract: The invention is directed to a positioning apparatus (30) for positioning an automotive equipment intended to be inserted in an opening defined in an automotive vehicle panel (10), the positioning apparatus (30) comprising: a central body (31) comprising a recess (32) intended to receive said automotive equipment (22), a peripheral rim (33) projecting from the central body (31), configured to cooperate with an edge (12E) of the opening (12) and to centre, within the opening, the automotive equipment that is inserted in the recess (32), and at least two flexible retaining members (34) arranged on the peripheral rim (33), each retaining member (34) being configured to cooperate with an edge (12E) of the opening (12) so that the positioning apparatus (30) can be removably attached to the automotive vehicle panel.Type: ApplicationFiled: February 22, 2024Publication date: August 22, 2024Applicant: U-shin Italia S.p.AInventors: Alexandre PIERI, Anthony GUERIN, Simon ROUZET, Davide GRECO, Massimo FRATTINI, Alberto GRAMAGLIA
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Publication number: 20240255006Abstract: A device for guiding a main air flow (F1) for an aircraft turbine engine, the device including a first air flowing pipe of a main air flow, the first pipe having a main axis, a plurality of ejectors of a secondary air flow located within the first pipe and configured to eject a secondary air flow and force the flow of the main air flow into the first pipe, the ejectors being distributed around the main axis, and a second air flowing pipe located at the outlet of the ejectors and including one end which is connected to one end of the first pipe, wherein the second pipe includes a narrow end.Type: ApplicationFiled: May 10, 2022Publication date: August 1, 2024Inventors: Thomas Alexandre GUERIN, Sylvain BORELLE, Jacques Lucien DEMOLIS, Nicolas Guillermo LEMOUSSU
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Publication number: 20240212701Abstract: A method and apparatus for processing sound data acquired by a plurality of microphones. The method includes: on the basis of the signals acquired by the plurality of microphones, determining a direction of arrival of a sound originating from at least one sound source of interest; applying spatial filtering to the sound data as a function of the direction of arrival of the sound; estimating ratios, in the time-frequency domain, in a magnitude representative of a signal amplitude, between the filtered sound data on the one hand and the acquired sound data on the other hand; and as a function of the estimated ratios, producing a weight mask to be applied in the time-frequency domain to the acquired sound data in order to construct an acoustic signal representing the sound originating from the source of interest but enhanced relative to the ambient noise.Type: ApplicationFiled: March 18, 2022Publication date: June 27, 2024Inventors: Alexandre Guerin, Henrique Tomaz-Amorim
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Publication number: 20230395090Abstract: The processing of a signal y(t) coming from a microphone of an equipment item including a loudspeaker intended to be supplied a signal x(t), limits an echo effect induced by the microphone capturing a sound emitted by the loudspeaker. This sound and any of its acoustic reflections follow an acoustic path w from the loudspeaker to the microphone. To limit the echo effect, the processing includes determining ?(t) a useful signal s(t) by subtracting from the signal y(t) an estimate of an echo signal x(t)*?(t) given by applying a filter ?(t) to the signal x(t). The filter ?(t) is adaptive by variable step size to account for a change over time in the acoustic path w(t). The adaptive filter ?(t) is produced at each frame k of samples as a function of an update ?W(k) to the acoustic path w for this frame k and by applying a normalization ? satisfying a criterion chosen for minimal variance.Type: ApplicationFiled: September 27, 2021Publication date: December 7, 2023Inventors: Clément GAULTIER, Alexandre GUERIN, Marc EMERIT, Grégory PALLONE
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Patent number: 11736882Abstract: A method for interpolating a sound field captured by a plurality of N microphones each outputting the encoded sound field in a form including at least one captured pressure and an associated pressure gradient vector. Such a method includes an interpolation of the sound field at an interpolation position outputting an interpolated encoded sound field as a linear combination of the N encoded sound fields each weighted by a corresponding weighting factor. The interpolation includes an estimation of the N weighting factors at least from: the interpolation position; a position of each of the N microphones; the N pressures captured by the N microphones; and an estimated power of the sound field at the interpolation position.Type: GrantFiled: December 13, 2019Date of Patent: August 22, 2023Assignee: FONDATION B-COMInventor: Alexandre Guérin
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Patent number: 11671170Abstract: A method for determining operational constraints for a first constellation of non-geostationary satellites transmitting towards a terrestrial station with respect to a second constellation of non-geostationary satellites linked with the station, the constraints comprising a maximum transmission power of the satellites of the first constellation, the method comprising: determining triplets of limit values (?, ?, I/N) of two angles (?, ?) and of an interference-to-noise ratio (I/N), the angles (?, ?) defining a position of a satellite of the first constellation relative to the station and to a satellite of the second constellation and the interference-to-noise ratio being the ratio between interferences transmitted by the first constellation on a link between the station and the satellite of the second constellation and the noise (N) of the link, the determination of the triplets being performed so that a distribution of signal-to-noise and interference ratios (R) aggregated over a time interval is greater thanType: GrantFiled: July 29, 2020Date of Patent: June 6, 2023Assignee: THALESInventors: Jean-Christophe Levy, Arnaud Guerin, Alexandre Guerin
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Patent number: 11646048Abstract: Processing acoustic signals to detect sound sources in a sound scene. The method includes: obtaining a plurality of signals representative of the sound scene, captured by a plurality of microphones of predefined positions; based on the signals captured by the microphones and on the positions of the microphones, applying a quantization of directional measurements of sound intensity and establishing a corresponding acoustic activity map in a sound source localization space, the space being of dimension N; constructing at least one vector basis of dimension less than N; projecting the acoustic activity map onto at least one axis of the vector basis; and searching for at least one local peak of acoustic activity in the map projection, an identified local peak corresponding to the presence of a sound source in the scene.Type: GrantFiled: June 7, 2019Date of Patent: May 9, 2023Assignee: ORANGEInventors: Alexandre Guerin, Srdan Kitic, Arnaud Lefort
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Publication number: 20220271831Abstract: A method for determining operational constraints for a first constellation of non-geostationary satellites transmitting towards a terrestrial station with respect to a second constellation of non-geostationary satellites linked with the station, the constraints comprising a maximum transmission power of the satellites of the first constellation, the method comprising: determining triplets of limit values (?, ?, I/N) of two angles (?, ?) and of an interference-to-noise ratio (I/N), the angles (?, ?) defining a position of a satellite of the first constellation relative to the station and to a satellite of the second constellation and the interference-to-noise ratio being the ratio between interferences (I) transmitted by the first constellation on a link between the station and the satellite of the second constellation and the noise (N) of the link, the determination of the triplets being performed so that a distribution of signal-to-noise and interference ratios (R) aggregated over a time interval is greaterType: ApplicationFiled: July 29, 2020Publication date: August 25, 2022Inventors: Jean-Christophe LEVY, Arnaud GUERIN, Alexandre GUERIN
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Patent number: 11349560Abstract: A method for determining a maximum transmission power (Pmax, PR, PO) of a non-geostationary satellite (NGSO1, NGSO2) in the direction of a ground station (GSO_SOL), includes the steps of: determining the minimum value of a topocentric angle (?NGSO1, ?NGSO2), formed between the non-geostationary satellite, the ground station and a point of the geostationary arc (ARC_GSO); comparing, in terms of absolute value, the minimum value of the topocentric angle with at least two threshold values (?r, ?o), such that: if it is less than the first threshold (?r), defining the maximum transmission power at a first value (PR), if it is between the first threshold and the second threshold (?o), defining the maximum transmission power at a second value (PO), greater than the first value, or if it is greater than the second threshold, defining the maximum power at a third value (Pmax), greater than the second value; the maximum transmission power values and the thresholds being determined so as to minimize the deviation betweeType: GrantFiled: July 23, 2020Date of Patent: May 31, 2022Assignee: THALESInventors: Jean-Christophe Levy, Arnaud Guerin, Alexandre Guerin
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Publication number: 20220132262Abstract: A method for interpolating a sound field captured by a plurality of N microphones each outputting the encoded sound field in a form including at least one captured pressure and an associated pressure gradient vector. Such a method includes an interpolation of the sound field at an interpolation position outputting an interpolated encoded sound field as a linear combination of the N encoded sound fields each weighted by a corresponding weighting factor. The interpolation includes an estimation of the N weighting factors at least from: the interpolation position; a position of each of the N microphones; the N pressures captured by the N microphones; and an estimated power of the sound field at the interpolation position.Type: ApplicationFiled: December 13, 2019Publication date: April 28, 2022Inventor: Alexandre Guérin
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Patent number: 11166290Abstract: A method for determining operational constraints for a first constellation of non-geostationary satellites (CONS_I) transmitting towards a terrestrial station (SV) with respect to a second constellation of non-geostationary satellites (CONS_V) linked with the station, the constraints comprising a maximum transmission power of the satellites of the first constellation, the method includes determining triplets of limit values (?, ?, I/N) of two angles (?, ?) and of an interference-to-noise ratio (I/N), the angles (?, ?) defining a position of a satellite (NGSO_I) of the first constellation relative to the station and to a satellite (NGSO_V) of the second constellation and the interference-to-noise ratio being the ratio between interferences (I) transmitted by the first constellation on a link between the station and the satellite of the second constellation and the noise (N) of the link, the determination of the triplets being performed so that a distribution of signal-to-noise and interference ratios (R) aggreType: GrantFiled: July 22, 2020Date of Patent: November 2, 2021Assignee: THALESInventors: Jean-Christophe Levy, Arnaud Guerin, Alexandre Guerin
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Publication number: 20210256990Abstract: Processing acoustic signals to detect sound sources in a sound scene. The method includes: obtaining a plurality of signals representative of the sound scene, captured by a plurality of microphones of predefined positions; based on the signals captured by the microphones and on the positions of the microphones, applying a quantization of directional measurements of sound intensity and establishing a corresponding acoustic activity map in a sound source localization space, the space being of dimension N; constructing at least one vector basis of dimension less than N; projecting the acoustic activity map onto at least one axis of the vector basis; and searching for at least one local peak of acoustic activity in the map projection, an identified local peak corresponding to the presence of a sound source in the scene.Type: ApplicationFiled: June 7, 2019Publication date: August 19, 2021Inventors: Alexandre GUERIN, Srdan KITIC, Arnaud LEFORT
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Patent number: 11081126Abstract: A method for processing sound data for separating N sound sources of a multichannel sound signal sensed in a real medium. The method includes: separating sources to the sensed multichannel signal and obtaining a separation matrix and a set of M sound components, with M?N; calculating a set of bi-variate first descriptors representative of statistical relations between the components of the pairs of the set obtained of M components, calculating a set of uni-variate second descriptors representative of characteristics of encoding of the components of the set obtained of M components; and classifying the components of the set of M components, according to two classes of components, a first class of N direct components corresponding to the N direct sound sources and a second class of M?N reverberated components, by calculating probability of membership in one of the two classes, dependent on the sets of first and second descriptors.Type: GrantFiled: May 24, 2018Date of Patent: August 3, 2021Inventors: Mathieu Baque, Alexandre Guerin
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Publication number: 20210037539Abstract: A method for determining operational constraints for a first constellation of non-geostationary satellites (CONS_I) transmitting towards a terrestrial station (SV) with respect to a second constellation of non-geostationary satellites (CONS_V) linked with the station, the constraints comprising a maximum transmission power of the satellites of the first constellation, the method includes determining triplets of limit values (?, ?, I/N) of two angles (?, ?) and of an interference-to-noise ratio (I/N), the angles (?, ?) defining a position of a satellite (NGSO_I) of the first constellation relative to the station and to a satellite (NGSO_V) of the second constellation and the interference-to-noise ratio being the ratio between interferences (I) transmitted by the first constellation on a link between the station and the satellite of the second constellation and the noise (N) of the link, the determination of the triplets being performed so that a distribution of signal-to-noise and interference ratios (R) aggreType: ApplicationFiled: July 22, 2020Publication date: February 4, 2021Inventors: Jean-Christophe LEVY, Arnaud GUERIN, Alexandre GUERIN
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Publication number: 20210036771Abstract: A method for determining a maximum transmission power (Pmax, PR, PO) of a non-geostationary satellite (NGSO1, NGSO2) in the direction of a ground station (GSO_SOL), includes the steps of: determining the minimum value of a topocentric angle (?NGSO1, ?NGSO2), formed between the non-geostationary satellite, the ground station and a point of the geostationary arc (ARC_GSO); comparing, in terms of absolute value, the minimum value of the topocentric angle with at least two threshold values (?r, ?o), such that: if it is less than the first threshold (?r), defining the maximum transmission power at a first value (PR), if it is between the first threshold and the second threshold (?o), defining the maximum transmission power at a second value (PO), greater than the first value, or if it is greater than the second threshold, defining the maximum power at a third value (Pmax), greater than the second value; the maximum transmission power values and the thresholds being determined so as to minimize the deviation betweeType: ApplicationFiled: July 23, 2020Publication date: February 4, 2021Inventors: Jean-Christophe LEVY, Arnaud GUERIN, Alexandre GUERIN
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Patent number: 10687164Abstract: A method implemented by a processing device for processing an ambisonic content including a plurality of ambisonic components of a plurality of orders defining a succession of ambisonic channels in each of which an ambisonic component is represented. The method includes: frequency filtering of the ambisonic components in a plurality of frequency bands, compiling an ambisonic decoding matrix, processing the ambisonic decoding matrix in order to extract, by matrix dimension reduction, a plurality of ambisonic decoding sub-matrices each associated with an ambisonic order and a frequency band selected for this ambisonic order, respective applications of the decoding sub-matrices to the ambisonic components in each selected frequency band, and a reconstruction, band by band, of the results of said respective applications, in order to deliver a plurality of decoded signals, each associated with a sound source.Type: GrantFiled: December 15, 2017Date of Patent: June 16, 2020Assignee: ORANGEInventors: Mathieu Baque, Alexandre Guerin
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Publication number: 20200152222Abstract: A method for processing sound data for separating N sound sources of a multichannel sound signal sensed in a real medium. The method includes: separating sources to the sensed multichannel signal and obtaining a separation matrix and a set of M sound components, with M?N; calculating a set of bi-variate first descriptors representative of statistical relations between the components of the pairs of the set obtained of M components, calculating a set of uni-variate second descriptors representative of characteristics of encoding of the components of the set obtained of M components; and classifying the components of the set of M components, according to two classes of components, a first class of N direct components corresponding to the N direct sound sources and a second class of M?N reverberated components, by calculating probability of membership in one of the two classes, dependent on the sets of first and second descriptors.Type: ApplicationFiled: May 24, 2018Publication date: May 14, 2020Inventors: Mathieu Baque, Alexandre Guerin
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Publication number: 20190335291Abstract: A method implemented by a processing device for processing an ambisonic content including a plurality of ambisonic components of a plurality of orders defining a succession of ambisonic channels in each of which an ambisonic component is represented. The method includes: frequency filtering of the ambisonic components in a plurality of frequency bands, compiling an ambisonic decoding matrix, processing the ambisonic decoding matrix in order to extract, by matrix dimension reduction, a plurality of ambisonic decoding sub-matrices each associated with an ambisonic order and a frequency band selected for this ambisonic order, respective applications of the decoding sub-matrices to the ambisonic components in each selected frequency band, and a reconstruction, band by band, of the results of said respective applications, in order to deliver a plurality of decoded signals, each associated with a sound source.Type: ApplicationFiled: December 15, 2017Publication date: October 31, 2019Inventors: Mathieu Baque, Alexandre Guerin
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Patent number: 9641157Abstract: A method and device are provided for filtering digital audio signals using at least one ARMA filter, particularly during a filter change. The method includes the following steps: a step of receiving a first request to change filtering to or from filtering by a first ARMA filter; and, in response to the first request, a step of gradually switching, at each of a plurality of cascaded first filtering blocks, between digital-signal filtering by a first basic filtering cell and digital-signal filtering by another associated basic filtering cell, the first basic filtering cells of the plurality of first filtering blocks factorizing the first filter.Type: GrantFiled: March 14, 2012Date of Patent: May 2, 2017Assignee: ORANGEInventors: Alexandre Guerin, Julien Faure, Claude Marro
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Patent number: 9031245Abstract: A method and device are provided for detecting acoustic shocks in an audio stream. The method includes: breaking down the audio stream into audio frames; analyzing the audio frames in order to assign each audio frame a category value from among a plurality of predefined values; and determining the probability of an acoustic shock occurring in a current frame, based on a sequence of a given length of category values assigned to a set of frames, using a two-state Markov model, defined by a predetermined transition matrix and transmission matrix.Type: GrantFiled: June 17, 2011Date of Patent: May 12, 2015Assignee: France TelecomInventors: Julien Faure, Alexandre Guerin, Claude Marro