1
Robert D Preuss, Salim E Roukos, A W F Huggins, Herbert Gish, Marcos A Bergamo, Patrick M Peterson, Alan G Derr: Embedded signalling. Bolt Beranek and Newman, Henry D Pahl Jr, June 7, 1994: US05319735 (599 worldwide citation)

A code signal representing a sequence of code symbols carrying digital information is generated with the frequency components of the code signal being essentially confined to a preselected signalling band lying within the bandwidth of an audio signal within which the code signal is to be embedded. T ...


2
Robert D Preuss: Methods and apparatus for designing a system using the tensor convolution block toeplitz-preconditioned conjugate gradient (TCBT-PCG) method. BBNT Solutions, Leonard Charles Suchyta, James K Weixel, November 26, 2002: US06487524 (5 worldwide citation)

Systems and methods for designing or determining parameters for a system are disclosed. These systems and methods exploit the Tensor Convolution Block Toeplitz (TCBT) structure involved in certain systems wherein a symmetric positive definite linear system of equations needs to be solved in the desi ...


3
John C Heine, Istvan L Ver, William B Coney, Robert D Preuss: Systems and methods for adaptive noise cancellation. BBN Technologies, Fish & Neave IP Group Ropes & Gray, July 24, 2007: US07248703 (3 worldwide citation)

A system (400) for reducing non-acoustic noise includes a primary sensor (420), at least one secondary sensor (410), a filter (415), and a summation unit (425). The primary sensor (420) measures pressure and produces a primary pressure signal. The at least one secondary sensor (410) measures pressur ...


4
Bruce R Musicus, Robert D Preuss: Digital filter and control system employing same. GTE Internetworking Incorporated, Leonard Charles Suchyta, Floyd E Anderson, November 9, 1999: US05983255 (3 worldwide citation)

In the control system disclosed herein, multiple input data streams are processed or filtered to generate multiple output streams by a filter which combines efficient batch processing of a fixed number of older input samples with immediate direct processing of a varying number of current samples the ...


5
Robert D Preuss: Method and system for rapid identification of multiple input systems. BBN Technologies, Fish & Neave IP Group Ropes & Gray, November 28, 2006: US07143015 (2 worldwide citation)

The disclosure describes techniques for determining the response characteristics of a system. One such technique includes applying a series of M vector probe input signal sets of a form {overscore (V)}m x(t) to the system, wherein {overscore (V)}m is an m-th column of a matrix V and x(t) is a scalar ...