Patents Assigned to EPFL-Ecole Polytechnique Federale De Lausanne
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Patent number: 8594320Abstract: Acoustic echo control and noise suppression in telecommunication systems. The proposed method of processing multi-channels audio loudspeakers signals and at least one microphone signal, comprises the steps of: transforming the input microphone signals (y1 (n), y2 (n), . . . , yM (n)) into input microphone short-time spectra, computing a combined loudspeaker signal short-time spectrum [X(i,k)] from the loudspeaker signals, (x1 (n), x2 (n), . . . , xL (n)), computing a combined microphone signal short-time spectrum [Y(i,k)] from the input microphone signal, (y1 (n), y2 (n), . . . , yM (n)), estimating a magnitude or power spectrum of the echo in the combined microphone signal short-time spectrum, computing a gain filter (G(i,k)) for magnitude modification of the input microphone short-time spectra, applying the gain filter to at least one of the input microphone spectra, converting the filtered input microphone spectra into the time domain (e1 (n), e2 (n), . . . , eM (n)).Type: GrantFiled: April 19, 2006Date of Patent: November 26, 2013Assignee: (EPFL) Ecole Polytechnique Federale de LausanneInventor: Christof Faller
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Patent number: 7742592Abstract: Acoustic echo control and noise suppression is an important part of any “handsfree” telecommunication system, such as telephony or audio or video conferencing systems. Bandwidth and computational complexity constraints have prevented that stereo or multi-channel telecommunication systems have been widely applied. The advantages are very low complexity, high robustness, scalability to multi-channel audio without a need for loudspeaker signal distortion, and efficient integration of echo and noise control in the same algorithm.Type: GrantFiled: April 19, 2006Date of Patent: June 22, 2010Assignee: (EPFL) Ecole Polytechnique Federale de LausanneInventor: Christof Faller
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Publication number: 20100152418Abstract: The present invention relates to a method for the manufacture of a peptidic folding precursor (Switch-Peptide) stable and soluble at physiological conditions, derived from a peptide having a potential for self-assembling and fibrillogenesis. Another object of the invention is to provide a tool for the quantitative, controlled in vitro study of fibrillogenesis and its inhibition of peptides involved in degenerative diseases.Type: ApplicationFiled: June 16, 2006Publication date: June 17, 2010Applicant: EPFL ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: Manfred Mutter, Gabriele Tuchscherer
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Patent number: 7666612Abstract: A method for labeling acyl carrier protein (ACP) fusion proteins with a wide variety of different labels is disclosed. The method relies on the transfer of a label from a coenzyme A type substrate to an ACP fusion protein using a holo-acyl carrier protein synthase (ACPS) or a homologue thereof. The method allows detecting and manipulating the fusion protein, both in vitro and in vivo, by attaching molecules to the fusion proteins that introduce a new physical or chemical property to the fusion protein. Examples of such labels are, among others, spectroscopic probes or reporter molecules, affinity tags, molecules generating reactive radicals, cross-linkers, ligands mediating protein-protein interactions or molecules suitable for the immobilization of the fusion protein.Type: GrantFiled: May 19, 2004Date of Patent: February 23, 2010Assignee: EPFL-Ecole Polytechnique Federale De LausanneInventors: Kai Johnsson, Nathalie George
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Publication number: 20080192946Abstract: Acoustic echo control and noise suppression is an important part of any “handsfree” telecommunication system, such as telephony or audio or video conferencing systems. Bandwidth and computational complexity constraints have prevented that stereo or multi-channel telecommunication systems have been widely applied. The advantages are very low complexity, high robustness, scalability to multi-channel audio without a need for loudspeaker signal distortion, and efficient integration of echo and noise control in the same algorithm.Type: ApplicationFiled: April 19, 2006Publication date: August 14, 2008Applicant: (EPFL) ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventor: Christof Faller
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Publication number: 20080170706Abstract: Acoustic echo control and noise suppression is an important part of any “handsfree” telecommunication system, such as telephony or audio or video conferencing systems. Bandwidth and computational complexity constraints have prevented that stereo or multi-channel telecommunication systems have been widely applied. The advantages are very low complexity, high robustness, scalability to multi-channel audio without a need for loudspeaker signal distortion, and efficient integration of echo and noise control in the same algorithm. The proposed method of processing multi-channels audio loudspeakers signals and at least one microphone signal, comprises the steps of: transforming the input microphone signals (y1(n), y2(n), . . . , yM(n)) into input microphone short-time spectra, computing a combined loudspeaker signal short-time spectrum [X(i,k)] from the loudspeaker signals, (x1(n), x2(n), . . .Type: ApplicationFiled: April 19, 2006Publication date: July 17, 2008Applicant: (EPFL) ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventor: Christof Faller
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Publication number: 20070082336Abstract: A method for labeling acyl carrier protein (ACP) fusion proteins with a wide variety of different labels is disclosed. The method relies on the transfer of a label from a coenzyme A type substrate to an ACP fusion protein using a holo-acyl carrier protein synthase (ACPS) or a homologue thereof. The method allows detecting and manipulating the fusion protein, both in vitro and in vivo, by attaching molecules to the fusion proteins that introduce a new physical or chemical property to the fusion protein. Examples of such labels are, among others, spectroscopic probes or reporter molecules, affinity tags, molecules generating reactive radicals, cross-linkers, ligands mediating protein-protein interactions or molecules suitable for the immobilization of the fusion protein.Type: ApplicationFiled: May 19, 2004Publication date: April 12, 2007Applicant: EPFL-ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNEInventors: Kai Johnsson, Nathalie George