Robert David Preuss

US Patent:

6487524, Nov 26, 2002

Filed:

Jun 8, 2000

Appl. No.:

09/589517

Inventors:

Robert D. Preuss - Boston MA

Assignee:

BBNT Solutions LLC - Cambridge MA

International Classification:

G06F 1500

US Classification:

702196, 702189, 702109, 700 52, 700280

Abstract:

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 design or determination of the parameters for the system. Further, these methods and systems employ a TCBT-PCG process that uses a fast matrix-vector multiply in order to improve the computational efficiency in the design or determination of these system parameters.

US Patent:

6590889, Jul 8, 2003

Filed:

Mar 3, 1999

Appl. No.:

09/261971

Inventors:

Robert David Preuss - Boston MA
Marcos Antonio Bergamo - Wellesley MA

Assignee:

GTE Internetworking Incorporated - Cambridge MA

International Classification:

H04B 7216

US Classification:

370342, 370335, 370441, 370392, 370419, 370321, 375145, 375257, 375367

Abstract:

A data communications system, particularly suited for shared or wireless communications channels, capable of accommodating terminals having different throughput capabilites by flexibly allocating cyclically rotated phases of a common code is disclosed. One or more shifts of a cyclic orthogonal code are assigned to a terminal. These codes are preferably cyclically padded to increase their tolerance to arbitrary time shifts, and the resulting codes are used to spread the signals for transmission.

US Patent:

6973403, Dec 6, 2005

Filed:

May 16, 2003

Appl. No.:

10/440389

Inventors:

Robert David Preuss - Sagamore Beach MA, US

Assignee:

Bent Solutions LLC - Cambridge MA

International Classification:

G06F017/14

US Classification:

702109, 702 77, 702190, 708300, 708405

Abstract:

Methods and systems for determining characteristics of a Finite Impulse Response system that can include applying a number of identical sets of probe signals to the system and averaging the observed outputs. A discrete Fourier transform (DFT) of the averaged outputs can be obtained and the DFT components can be multiplied by corresponding transformed companion components related to the probe components. The system characteristics can be selected based on computing the inverse DFT of the resulting product components. The probe components can be taken from a circulant matrix of size S×S, or from an inverse DFT of a set of transform components consisting of arbitrary, non-zero, real numbers for first and last components of a partial set and arbitrary, non-zero, complex numbers for other components of the partial set to which the non-zero, complex number components of the partial set are added in reverse order and in complex conjugate.

US Patent:

7143015, Nov 28, 2006

Filed:

Nov 7, 2002

Appl. No.:

10/289765

Inventors:

Robert D. Preuss - Sagamore Beach MA, US

Assignee:

BBN Technologies Corp. - Cambridge MA

International Classification:

G06F 17/10

US Classification:

703 2, 700 32

Abstract:

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)}x(t) to the system, wherein {overscore (V)}is an m-th column of a matrix V and x(t) is a scalar input signal. The response signals {overscore (y)}are measured and a single-input system {overscore (F)}(z) is determined by considering the approximate relationship {overscore (y)}≈{overscore (F)}(z)x(z), where {overscore (F)}(z) is an m-th column of a matrix F(z). The system characteristics can be determined from the relationship H(z)=F(z)V, where Vdenotes the right-matrix-inverse of the matrix V. The matrix V may be a matrix with mutually orthogonal rows, or may have entries consisting of plus one and minus one values, or may be a portion of a Hadamard matrix.

US Patent:

7248703, Jul 24, 2007

Filed:

Jun 13, 2002

Appl. No.:

10/171293

Inventors:

John C. Heine - Weston MA, US
Istvan L. Ver - Stow MA, US
William B. Coney - Littleton MA, US
Robert D. Preuss - Sagamore Beach MA, US

Assignee:

BBN Technologies Corp. - Cambridge MA

International Classification:

A61F 11/06
H04R 25/00
G10K 13/00
G10K 11/16

US Classification:

381 711, 381 941, 381 7111, 381 7112, 381189, 181296, 181158

Abstract:

A system () for reducing non-acoustic noise includes a primary sensor (), at least one secondary sensor (), a filter (), and a summation unit (). The primary sensor () measures pressure and produces a primary pressure signal. The at least one secondary sensor () measures pressure and produce a secondary pressure signal. The filter () processes the secondary pressure signal to produce a filtered pressure signal. The summation unit () subtracts the filtered pressure signal from the primary pressure signal to reduce non-acoustic noise in the primary pressure signal.

US Patent:

7478043, Jan 13, 2009

Filed:

Jun 5, 2003

Appl. No.:

10/454962

Inventors:

Robert David Preuss - Sagamore Beach MA, US

Assignee:

Verizon Corporate Services Group, Inc. - New York NY
BBN Technologies Corp. - Cambridge MA

International Classification:

G10L 15/20
G10L 15/00

US Classification:

704233, 704231

Abstract:

A speech analysis system includes a codebook () that stores speech spectral parameters corresponding to a speech spectral hypothesis. The speech spectral hypothesis may be combined with a noise spectral hypothesis and the combined hypothesis compared to a sensed signal via a discriminant function (). The discriminant function may be evaluated using the preconditioned conjugate gradient (PCG) process.

US Patent:

7797156, Sep 14, 2010

Filed:

Feb 15, 2006

Appl. No.:

11/355777

Inventors:

Robert David Preuss - Sagamore Beach MA, US
Darren Ross Fabbri - Arlington MA, US
Daniel Ramsay Cruthirds - Cambridge MA, US

Assignee:

Raytheon BBN Technologies Corp. - Cambridge MA

International Classification:

G10L 15/06
G10L 21/02

US Classification:

704233, 704243, 704226, 704227, 704228, 704244

Abstract:

Presented herein are systems and methods for generating an adaptive noise codebook for use with electronic speech systems. The noise codebook includes a plurality of entries which may be updated based on environmental noise sounds. The speech system includes a speech codebook and the adaptive noise codebook. The system identifies speech sounds in an audio signal using the speech and noise codebooks.

US Patent:

8165171, Apr 24, 2012

Filed:

Mar 19, 2009

Appl. No.:

12/383192

Inventors:

Robert David Preuss - Arlington MA, US
Thomas Patrick Bidigare - Arlington VA, US

Assignee:

Raytheon BBN Technologies Corp. - Cambridge MA

International Classification:

H04J 3/06

US Classification:

370503, 375354

Abstract:

The invention provides a set of methods and systems for obtaining a synchronized signal in a distributed fashion. The methods and systems described herein allow a node to obtain a periodic signal that would be synchronized with the periodic signal obtained at another node when both nodes follow the same synchronizing procedure, without the need for centralized control of both nodes or the need for all nodes to have coordinated local oscillators. The invention includes beamforming methods and systems for producing a coherent beam at a target location and at a target frequency using the synchronized signal.