Patents by Inventor Julien Faure

Julien Faure 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).

  • Publication number: 20180182408
    Abstract: A method of determining a distribution of bits for coding a transition frame, said method being implemented in a coder/decoder for coding/decoding a digital signal, the transition frame being preceded by a predictive coded preceding frame, coding the transition frame comprising transform coding and predictive coding a single sub-frame of the transition frame, the method comprising the following steps: assigning a bit rate for predictive coding the transition sub-frame, said bit rate being equal to the minimum between the bit rate for transform coding the transition frame and a first predetermined bit rate value; determining a first number of bits allocated for predictive coding the transition sub-frame for said bit rate; and calculating a second number of bits allocated for transform coding the transition frame from the first number of bits and a number of bits available for coding the transition frame.
    Type: Application
    Filed: July 27, 2015
    Publication date: June 28, 2018
    Inventors: Stephane Ragot, Julien Faure
  • Patent number: 9984696
    Abstract: Methods and apparatus are provided for coding and decoding a digital audio signal. Decoding includes: decoding according to an inverse transform decoding of a previous frame of samples of the digital signal, which is received and coded according to a transform coding; and decoding according to a predictive decoding of a current frame of samples of the digital signal, which is received and coded according to a predictive coding. The predictive decoding of the current frame is a transition predictive decoding which does not use any adaptive dictionary arising from the previous frame. At least one state of the predictive decoding is reinitialized to a predetermined default value, and an add-overlap step combines a signal segment synthesized by predictive decoding of the current frame and a signal segment synthesized by inverse transform decoding, corresponding to a stored segment of the decoding of the previous frame.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: May 29, 2018
    Assignee: ORANGE
    Inventors: Julien Faure, Stephane Ragot
  • Patent number: 9761230
    Abstract: A method for processing a digital signal, implemented during decoding of the signal, in order to replace a succession of samples lost during decoding, the method comprising steps of: generating a structure of a signal for replacing the lost succession, this structure comprising spectral components determined from valid samples received during decoding before the succession of lost samples; generating a residue between a digital signal available to the decoder, comprising received valid samples, and a signal generated from the spectral components; and extracting blocks from the residue, method in which window weighted blocks are injected into the structure using an overlap-add approach, the injected blocks partially overlapping in time.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: September 12, 2017
    Assignee: Orange
    Inventors: Jerome Daniel, Julien Faure
  • Publication number: 20170213561
    Abstract: A method for decoding a digital signal encoded using predictive coding and transform coding, comprising the following steps: predictive decoding of a preceding frame of the digital signal, encoded by a set of predictive coding parameters; detecting the loss of a current frame of the encoded digital signal; generating by prediction, from at least one predictive coding parameter encoding the preceding frame, a frame for replacing the current frame; generating by prediction, from at least one predictive coding parameter encoding the preceding frame, an additional segment of digital signal; temporarily storing said additional segment of digital signal.
    Type: Application
    Filed: July 27, 2015
    Publication date: July 27, 2017
    Inventors: Julien Faure, Stephane Ragot
  • Patent number: 9641157
    Abstract: 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: Grant
    Filed: March 14, 2012
    Date of Patent: May 2, 2017
    Assignee: ORANGE
    Inventors: Alexandre Guerin, Julien Faure, Claude Marro
  • Patent number: 9613629
    Abstract: A signal processing device, media, and method are provided, where a signal comprises a succession of samples distributed in successive frames. The processing is implemented during decoding of such a signal in order to replace at least one signal frame lost in decoding, and comprising in particular: a) searching, in a valid signal available to the decoder, for a signal segment of length corresponding to a period set as a function of the valid signal; b) analyzing a spectrum of the segment in order to determine spectral components of the segment; and c) synthesizing at least one replacement frame for the lost frame by construction of a synthesized signal from at least a portion of the spectral components.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: April 4, 2017
    Assignee: Orange
    Inventors: Julien Faure, Stephane Ragot
  • Publication number: 20170040021
    Abstract: A method for processing a digital audio signal, including a series of samples distributed in consecutive frames, is implemented when decoding the signal in order to replace at least one signal frame lost during decoding. The method includes the following steps: a) searching, in a valid signal segment available when decoding, for at least one period in the signal, determined in accordance with the valid signal; b) analyzing the signal in the period, in order to determine spectral components of the signal in the period; c) synthesizing at least one frame for replacing the lost frame, by construction of a synthesis signal from: an addition of components selected among the predetermined spectral components, and a noise added to the addition of components. In particular, the amount of noise added to the addition of components is weighted in accordance with voice information of the valid signal, obtained when decoding.
    Type: Application
    Filed: April 24, 2015
    Publication date: February 9, 2017
    Inventors: Julien Faure, Stephane Ragot
  • Publication number: 20170011747
    Abstract: A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular sampling of an initial window provided for a transform of given initial size N, to apply a secondary transform of size M different from N.
    Type: Application
    Filed: May 4, 2016
    Publication date: January 12, 2017
    Inventors: Julien Faure, Pierrick Philippe
  • Publication number: 20160293173
    Abstract: Methods and apparatus are provided for coding and decoding a digital audio signal. Decoding includes: decoding according to an inverse transform decoding of a previous frame of samples of the digital signal, which is received and coded according to a transform coding; and decoding according to a predictive decoding of a current frame of samples of the digital signal, which is received and coded according to a predictive coding. The predictive decoding of the current frame is a transition predictive decoding which does not use any adaptive dictionary arising from the previous frame. At least one state of the predictive decoding is reinitialized to a predetermined default value, and an add-overlap step combines a signal segment synthesized by predictive decoding of the current frame and a signal segment synthesized by inverse transform decoding, corresponding to a stored segment of the decoding of the previous frame.
    Type: Application
    Filed: November 14, 2014
    Publication date: October 6, 2016
    Inventors: Julien Faure, Stephane Ragot
  • Patent number: 9368121
    Abstract: A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular sampling of an initial window provided for a transform of given initial size N, to apply a secondary transform of size M different from N.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: June 14, 2016
    Assignee: ORANGE
    Inventors: Julien Faure, Pierrick Philippe
  • Patent number: 9355643
    Abstract: A method is provided for determining an indicator evaluating the voice quality of a coded speech signal. The method includes the following steps: calculation per signal frame, of a predetermined number of coefficients of a linear prediction filter for the coded speech signal; determination per frame, of a speech signal reconstructed on the basis of the filter coefficients thus calculated; obtaining per sample, of the residual between the coded speech signal and the reconstructed speech signal; calculation of an evaluation indicator on the basis of the mean or the absolute value of the residuals obtained for all the samples. Also provided are a device for determining an indicator implementing the above method, a method of evaluating the quality or of identifying the class of coding of the coded signal using the indicator determined, as well as a measurement terminal implementing these methods.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: May 31, 2016
    Assignee: ORANGE
    Inventors: Cyril Plapous, Julien Faure
  • Publication number: 20160055852
    Abstract: A method for processing a digital signal, implemented during decoding of the signal, in order to replace a succession of samples lost during decoding, the method comprising steps of: generating a structure of a signal for replacing the lost succession, this structure comprising spectral components determined from valid samples received during decoding before the succession of lost samples; generating a residue between a digital signal available to the decoder, comprising received valid samples, and a signal generated from the spectral components; and extracting blocks from the residue, method in which window weighted blocks are injected into the structure using an overlap-add approach, the injected blocks partially overlapping in time.
    Type: Application
    Filed: April 17, 2014
    Publication date: February 25, 2016
    Inventors: Jerome Daniel, Julien Faure
  • Publication number: 20150371647
    Abstract: A signal processing device, media, and method are provided, where a signal comprises a succession of samples distributed in successive frames. The processing is implemented during decoding of such a signal in order to replace at least one signal frame lost in decoding, and comprising in particular: a) searching, in a valid signal available to the decoder, for a signal segment of length corresponding to a period set as a function of the valid signal; b) analyzing a spectrum of the segment in order to determine spectral components of the segment; and c) synthesizing at least one replacement frame for the lost frame by construction of a synthesized signal from at least a portion of the spectral components.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 24, 2015
    Inventors: Julien Faure, Stephane Ragot
  • Patent number: 9215544
    Abstract: The invention concerns sound spatialization with multichannel encoding for binaural reproduction on two loudspeakers, the spatial encoding being defined by encoding functions associated with multiple encoding channels and the decoding by applying filters for binaural reproduction.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: December 15, 2015
    Assignee: Orange
    Inventors: Julien Faure, Jérôme Daniel, Marc Emerit
  • Patent number: 9031245
    Abstract: 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: Grant
    Filed: June 17, 2011
    Date of Patent: May 12, 2015
    Assignee: France Telecom
    Inventors: Julien Faure, Alexandre Guerin, Claude Marro
  • Patent number: 8972255
    Abstract: Embodiments of methods and devices for classifying background noise contained in an audio signal are disclosed. In one embodiment, the device includes a module for extracting from the audio signal a background noise signal, termed the noise signal. Also included is a second that calculates a first parameter, termed the temporal indicator. The temporal indicator relates to the temporal evolution of the noise signal. The second module also calculates a second parameter, termed the frequency indicator. The frequency indicator relates to the frequency spectrum of the noise signal. Finally, the device includes a third module that classifies the background noise by selecting, as a function of the calculated values of the temporal indicator and of the frequency indicator, a class of background noise from among a predefined set of classes of background noise.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: March 3, 2015
    Assignee: France Telecom
    Inventors: Adrien Leman, Julien Faure
  • Patent number: 8886529
    Abstract: A method and device are provided for the objective evaluation of voice quality of a speech signal. The device includes: a module for extracting a background noise signal, referred to as a noise signal, from the speech signal; a module for calculating the audio parameters of the noise signal; a module for classifying the background noise contained in the noise signal on the basis of the calculated audio parameters, according to a predefined set of background noise classes; and a module for evaluating the voice quality of the speech signal on the basis of at least the resulting classification relative to the background noise in the speech signal.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: November 11, 2014
    Assignee: France Telecom
    Inventors: Julien Faure, Adrien Leman
  • Patent number: 8847795
    Abstract: Coding/decoding of a digital signal, consisting of successive blocks of samples, the coding being of the transform with overlap type and comprising, upon analysis, the application of a weighting window to two blocks of M successive samples. In particular, this weighting window is asymmetric and comprises four distinct portions extending successively over the two aforesaid blocks, with: a first portion, increasing over a first interval of samples, a second portion, constant at a value of 1 over a second interval, a third portion, decreasing over a third interval, and a fourth portion, constant at a value of 0 over a fourth interval.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: September 30, 2014
    Assignee: Orange
    Inventors: Julien Faure, Pierrick Philippe
  • Publication number: 20140142930
    Abstract: A method and device are provided for coding or decoding a digital audio signal by transform using analysis or synthesis weighting windows applied to sample frames. The method includes an irregular sampling of an initial window provided for a transform of given initial size N, to apply a secondary transform of size M different from N.
    Type: Application
    Filed: July 9, 2012
    Publication date: May 22, 2014
    Applicant: ORANGE
    Inventors: Julien Faure, Pierrick Philippe
  • Publication number: 20140139362
    Abstract: Coding/decoding of a digital signal, consisting of successive blocks of samples, the coding being of the transform with overlap type and comprising, upon analysis, the application of a weighting window to two blocks of M successive samples. In particular, this weighting window is asymmetric and comprises four distinct portions extending successively over the two aforesaid blocks, with: a first portion, increasing over a first interval of samples, a second portion, constant at a value of 1 over a second interval, a third portion, decreasing over a third interval, and a fourth portion, constant at a value of 0 over a fourth interval.
    Type: Application
    Filed: June 26, 2012
    Publication date: May 22, 2014
    Applicant: ORANGE
    Inventors: Julien Faure, Pierrick Philippe