Patents by Inventor Maurice Charbit

Maurice Charbit 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).

  • Method for denoising an acoustic signal for a multi-microphone audio device operating in a noisy environment
    Patent number: 9338547
    Abstract: This method comprises steps of: a) partitioning (10, 16) the spectrum of the noisy signal into a HF part and a LF part; b) operating denoising processes in a differentiated manner for each of the two parts of the spectrum with, for the HF part, a denoising by prediction of the useful signal from one sensor to the other between sensors of a first sub-array (R1), by means of a first adaptive algorithm estimator (14), and, for the LF part, a denoising by prediction of the noise from one sensor to the other between sensors of a second sub-array (R2), by means of a second adaptive algorithm estimator (18); c) reconstructing the spectrum by combining together (22) the signals delivered after denoising of the two parts of the spectrum, respectively; and d) selectively reducing the noise (24) by an Optimized Modified Log-Spectral Amplitude gain, OM-LSA, process.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: May 10, 2016
    Assignee: PARROT
    Inventors: Charles Fox, Guillaume Vitte, Maurice Charbit, Jacques Prado
  • METHOD FOR DENOISING AN ACOUSTIC SIGNAL FOR A MULTI-MICROPHONE AUDIO DEVICE OPERATING IN A NOISY ENVIRONMENT
    Publication number: 20130343558
    Abstract: This method comprises steps of: a) partitioning (10, 16) the spectrum of the noisy signal into a HF part and a LF part; b) operating denoising processes in a differentiated manner for each of the two parts of the spectrum with, for the HF part, a denoising by prediction of the useful signal from one sensor to the other between sensors of a first sub-array (R1), by means of a first adaptive algorithm estimator (14), and, for the LF part, a denoising by prediction of the noise from one sensor to the other between sensors of a second sub-array (R2), by means of a second adaptive algorithm estimator (18); c) reconstructing the spectrum by combining together (22) the signals delivered after denoising of the two parts of the spectrum, respectively; and d) selectively reducing the noise (24) by an Optimized Modified Log-Spectral Amplitude gain, OM-LSA, process.
    Type: Application
    Filed: June 11, 2013
    Publication date: December 26, 2013
    Applicant: PARROT
    Inventors: Charles Fox, Guillaume Vitte, Maurice Charbit, Jacques Prado