1
Visvaldis A Vitols, James E Paul Jr: Keyword detection in continuous speech using continuous asynchronous correlation. Rockwell International Corporation, H Frederick Hamann, Rolf M Pitts, George Jameson, March 28, 1978: US04081607 (81 worldwide citation)

A system for detecting one or more keywords in continuous speech is disclosed wherein a speech processor extracts a plurality of analog speech parameters from the input continuous speech, an STV (Spectral Time Vector) generator circuit selectively converts the plurality of analog speech parameters i ...


2
Gregory W Evans, James E Paul: Autonomous, check-pointing, navigational system for an airborne vehicle. Rockwell Internation Corporation, L Lee Humphries, H Frederick Hamann, Rolf M Pitts, December 18, 1979: US04179693 (62 worldwide citation)

An autonomous navigational system for an airborne vehicle is disclosed which automatically updates its position and heading coordinates at each of a plurality of checkpoints along a preselected flight path. Prestored in a memory of the navigational system is a plurality of reference map images respe ...


3
James E Paul: Adaptive noise cancelling receiver. Rockwell International Corporation, L Lee Humphries, H Frederick Hamann, Rolf M Pitts, December 4, 1979: US04177430 (40 worldwide citation)

A receiving system is described which has the capability of substantially cancelling broadband noise, such as impulse noise, atmospheric noise, electrical line noise and receiver front end noise, from a selected radio frequency passband. In a first embodiment, a desired radio frequency passband is s ...


4
James E Paul, Visvaldis A Vitols: Noise filtering device. Rockwell International Corporation, H Frederick Hamann, Rolf M Pitts, George Jameson, October 4, 1977: US04052559 (38 worldwide citation)

Noise such as hum (whose components are self-correlated over a long time-interval) is estimated (separated) from Signal such as speech (whose components are self-correlated only over a short time-interval) by using a time-domain transversal filter, whose tap-weight coefficients may be fixed (Wiener ...


5
James E Paul Jr, Visvaldis A Vitols: Analog signal channel equalization with signal-in-noise embodiment. Rockwell International Corporation, H Fredrick Hamann, Rolf M Pitts, December 28, 1976: US04000369 (29 worldwide citation)

Apparatus for reducing (a) background noise in a signal channel, and (b) channel gain variations, useful with spectral analysis equipment. Two feed forward circuits are disclosed: one to enhance a signal in noise (deriving an estimated signal); the other for AGC (relative to a preselected level). Ba ...


6
Dermot T Fucito, James E Paul, Milan Markovic: Noise reduction in companding arrangements. Northern Telecom, Schwartz Jeffery Schwaab Mack Blumenthal & Evans, February 10, 1987: US04642583 (5 worldwide citation)

In a companding arrangement, the presence of a tone in only one of the two transmission directions is detected. Upon such detection, for example during set-up of a telephone call via a satellite transmission channel, the tone is compressed or expanded, depending on its transmission direction, separa ...