Abstract: A method for estimating the acoustic reverberations in an environment comprising the following steps: a measurement step in which one acoustic signal emitted in the environment is captured; a step for determination of acoustic energy decay rate distribution during which an acoustic energy decay rate distribution is determined from the acoustic signal captured in step (a); an estimation step during which a reverberation time and a reverberation level of sound in the environment are estimated by regression from the characteristic function of the acoustic energy decay rate distribution determined in step (b).

Abstract: The invention concerns a method for generating a signature of a musical audio signal of a given duration, the method comprising the following steps: —modelling (104) the musical audio signal to obtain, for each frequency band of a set of n frequency bands, a diagram representing the energy of the audio signal for the frequency band, on the basis of the time during said given duration; —determining (103) musical transition times tk of the audio signal during the given duration; —associating (105) each musical transition time tk with an item of local information comprising a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a subsequent musical transition time tk+1 and/or a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a preceding musical transition time tk?1; —determining (106), on the basis of t

Abstract: A method for estimating the acoustic reverberations in an environment comprising the following steps: a measurement step in which one acoustic signal emitted in the environment is captured; a step for determination of acoustic energy decay rate distribution during which an acoustic energy decay rate distribution is determined from the acoustic signal captured in step (a); an estimation step during which a reverberation time and a reverberation level of sound in the environment are estimated by regression from the characteristic function of the acoustic energy decay rate distribution determined in step (b).

Abstract: A method for estimating an instantaneous phase of dereverberated acoustic signal, the method comprising the following steps: measurement of an acoustic signal reverberated by propagation in a medium, estimation of a one short-term Fourier transform of the reverberated acoustic signal with a window function, calculation of an instantaneous frequency of dereverberated signal from said short-term Fourier transform and from an influencing factor of the medium, said influencing factor being a function of a reverberation time of said medium, determination of an instantaneous phase of dereverberated signal by integrating the instantaneous frequency of dereverberated signal over time.

Abstract: A method for estimating an instantaneous phase of dereverberated acoustic signal, the method comprising the following steps: measurement of an acoustic signal reverberated by propagation in a medium, estimation of at least a one short-term Fourier transform of the reverberated acoustic signal with at least one a window function, calculation of at least one an instantaneous frequency of dereverberated signal from said short-term Fourier transform and from an influencing factor of the medium, said influencing factor being a function of a reverberation time of said medium, determination of at least one an instantaneous phase of dereverberated signal by integrating the instantaneous frequency of dereverberated signal over time.

Abstract: A high lift control system for an aircraft having at least one high lift surface includes a selector having a predetermined number of discrete positions, at least one of the predetermined positions corresponding to different positions of the at least one high lift surface.

Abstract: A method for suppressing the late reverberation of an audio signal. A plurality of prediction vectors are calculated. A plurality of observation vectors from the modulus of the complex time-frequency transform of an input signal is generated. A plurality of synthesis dictionaries from the plurality of observation vectors are constructed. A late reverberation spectrum from the plurality of synthesis dictionaries and the plurality of prediction vectors are estimated. A plurality of observation vectors are filtered to eliminate the late reverberation spectrum and obtain a dereverberated signal modulus.

Abstract: A method for suppressing the late reverberation of an audio signal. A plurality of prediction vectors are calculated. A plurality of observation vectors from the modulus of the complex time-frequency transform of an input signal is generated. A plurality of synthesis dictionaries from the plurality of observation vectors are constructed. A late reverberation spectrum from the plurality of synthesis dictionaries and the plurality of prediction vectors are estimated. A plurality of observation vectors are filtered to eliminate the late reverberation spectrum and obtain a dereverberated signal modulus.

Abstract: A high lift control system for an aircraft having at least one high lift surface includes a selector having a predetermined number of discrete positions, at least one of the predetermined positions corresponding to different positions of the at least one high lift surface.

Abstract: The invention concerns a method for generating a signature of a musical audio signal of a given duration, the method comprising the following steps: —modelling (104) the musical audio signal to obtain, for each frequency band of a set of n frequency bands, a diagram representing the energy of the audio signal for the frequency band, on the basis of the time during said given duration; —determining (103) musical transition times tk of the audio signal during the given duration; —associating (105) each musical transition time tk with an item of local information comprising a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a subsequent musical transition time tk+1 and/or a vector of n values representative, respectively, of the energy of the audio signal in each of the n diagrams obtained between musical transition time tk and a preceding musical transition time tk?1; —determining (106), on the basis of t

Abstract: A sound pickup system with which there are associated a video aiming system and a method for the setting of the characteristic parameters of the sound pickup. The device comprises, in addition to the network of sensors, a control unit and a circuit for the setting of the characteristic parameters, a video camera, a video screen and a circuit for coupling the screen to the a circuit for setting the characteristic parameters of each of the sound reception channels in order to achieve a superimposition of images so that it is possible to control the setting of the parameters with respect to the position and size of the sound sources. A method for the setting of the characteristic parameters of the sound pickup enables the interpolation of the coefficients of digital filters linearly and in time. Application to sound pickup systems adapted to conference halls.

Abstract: Appliance for the treatment, particularly in a liquid, of a product like leather, consisting of a perforated drum (1) containing compartments (9, 10, 11) separated by partitions (12, 13, 14) and connecting with the outside via openings (9a, 9b, 9c) closed by doors, along with a tank (7) surrounding the drum (1) and provided with an opening (8), a fixing means enabling the drum (1) and the tank (7) to be fixed together in rotation when the opening (9a) of a compartment (9) is placed opposite the opening (8) in the tank (7) and a drive means (22) enabling the drum (1) and the tank (7) to be swung round jointly between a first position in which the opening (8) of the tank is in a top position and a second position in which the opening (8) of the tank is placed on the side, the said first position corresponding to the treatment and loading of the product and the second position corresponding to its discharge.