Patents Assigned to EPFL-Ecole Polytechnique Federale De Lausanne
  • Patent number: 8594320
    Abstract: 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: Grant
    Filed: April 19, 2006
    Date of Patent: November 26, 2013
    Assignee: (EPFL) Ecole Polytechnique Federale de Lausanne
    Inventor: Christof Faller
  • Patent number: 7742592
    Abstract: 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: Grant
    Filed: April 19, 2006
    Date of Patent: June 22, 2010
    Assignee: (EPFL) Ecole Polytechnique Federale de Lausanne
    Inventor: Christof Faller
  • Publication number: 20100152418
    Abstract: 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: Application
    Filed: June 16, 2006
    Publication date: June 17, 2010
    Applicant: EPFL ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
    Inventors: Manfred Mutter, Gabriele Tuchscherer
  • Patent number: 7666612
    Abstract: 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: Grant
    Filed: May 19, 2004
    Date of Patent: February 23, 2010
    Assignee: EPFL-Ecole Polytechnique Federale De Lausanne
    Inventors: Kai Johnsson, Nathalie George
  • Publication number: 20080192946
    Abstract: 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: Application
    Filed: April 19, 2006
    Publication date: August 14, 2008
    Applicant: (EPFL) ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
    Inventor: Christof Faller
  • Publication number: 20080170706
    Abstract: 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: Application
    Filed: April 19, 2006
    Publication date: July 17, 2008
    Applicant: (EPFL) ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
    Inventor: Christof Faller
  • Publication number: 20070082336
    Abstract: 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: Application
    Filed: May 19, 2004
    Publication date: April 12, 2007
    Applicant: EPFL-ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
    Inventors: Kai Johnsson, Nathalie George