1
Christian Gulli, Dominique Pastor, Gerard Reynaud: Process of voice recognition in a harsh environment, and device for implementation. Sextant Avionique, Oblon Spivak McClelland Maier & Neustadt P C, October 3, 2000: US06128594 (145 worldwide citation)

A process for voice recognition in a harsh environment such as the cockpit of a military aircraft. An acquisition device is connected to an acoustico-phonetic decoding device which is then connected to a recognition supervisor. The acquisition device is also connected to a voice recognition device w ...


2
Dominique Pastor: Method of speech detection. Sextant Avionique, Oblon Spivak McClelland Maier & Neustadt P C, November 5, 1996: US05572623 (27 worldwide citation)

A method for detecting the start and end of speech from a noisy signal including the steps of:


3
Dominique Pastor, Gérard Reynaud, Pierre Albert Breton: Method of frequency filtering applied to noise suppression in signals implementing a wiener filter. Sextant Avionique, Oblon Spivak McClelland Maier & Neustadt P C, September 3, 2002: US06445801 (20 worldwide citation)

The disclosed method uses the Wiener frequency filtering to suppress noise in noisy sound signals (u(t)). This method includes a preliminary step in which the sound signals (u(t)) to be noise-suppressed are digitized by sampling and subdivided into frames. The method then includes a first series of ...


4
Dominique Pastor: Method of detecting a useful signal affected by noise. Sextant Avionique, Oblon Spivak McClelland Maier & Neustadt, August 9, 1994: US05337251 (19 worldwide citation)

In order to detect a useful signal affected by noise, a measurement is taken of the expected S/N ratio of this signal over a time slice, a measurement of the estimated white noise alone is taken over another time slice without useful signal, the mean energy of the noise and of the noise-affected sig ...


5
Dominique Pastor, Gérard Reynaud: Process for searching for a noise model in noisy audio signals. Sextant Avionique, Oblon Spivak McClelland Maier & Neustadt P C, August 20, 2002: US06438513 (12 worldwide citation)

A process for the denoising of audio signals picked up in a noisy environment, for example in the cockpit of an aircraft or of another vehicle, and more precisely to the searching for a noise model in the audio signals. Input signals are digitized, and these signals are processed on the basis of a n ...


6
Dominique Pastor: Energy-based process for the detection of signals drowned in noise. Sextant Avionique, Oblon Spivak McClelland Maier & Neustadt, April 23, 1996: US05511009 (10 worldwide citation)

The energy-based process according to the invention for the detection of useful signals drowned in noise consists of starting from a frame of samples of a noisy signal grouped in successive frames, making a pre-classification by comparing the energies of successive samples of each frame with a deter ...


7
Dominique Pastor: Speech detection method.. Sextant Avionique, April 22, 1994: FR2697101-A1

The method of the invention consists in: - detecting a voiced frame; - searching for the noise frames preceding this voiced frame; - constructing an auto-regressive model of the noise and a mean noise spectrum; - whitening the frames preceding the voicing; - searching for the actual start of speech ...


8
Dominique Pastor: Method for detecting a noisy wanted signal.. Sextant Avionique, December 18, 1992: FR2677828-A1

In order to detect a noisy wanted signal, a measurement of the expected S/N ratio of this signal is taken over one time slice, a measurement of the estimated white noise alone is taken over another time slice without wanted signal, the mean energy of the noise and of the noisy signal are calculated, ...


9
Dominique Pastor: Energy detection procedure for noisy signals.. Sextant Avionique, October 21, 1994: FR2704111-A1

The energy detection procedure for useful signals embedded in noise, consists, according to the invention, starting from a frame of samples of a noisy signal, grouped into successive frames, in performing a preclassification by comparing the energies of the successive samples of each frame with a sp ...


10
Christian Gulli, Dominique Pastor, Gerard Raynaud: Method for voice recognition in harsh environments, and device therefor. Sextant Avionique, han hong, April 8, 1998: CN97190039

The present invention provides a systemic character of an acquisition device (5) that is connected to an acoustico-phonetic decoding device (11) which is then connected to a recognition supervisor (6) and a voice recognition device (3) which is also connected to a dictionary (12), a recognition supe ...