Kevin J Dimond, 343317 49Th St NE, Tacoma, WA 98422

2016002, Jan 28, 2016

Jul 25, 2014

14/340894

Robert Patrick Dougherty - Bellevue WA, US
Kevin James Dimond - Seattle WA, US
Tessa Lynn Robinson - Covington WA, US

OPTINAV - Bellevue WA

H04R 1/02
H04R 1/40

A phased microphone array capable of being placed in the free stream flow of a wind tunnel test section. The array consists of a plane of microphones on arms radiating out from a central hub. Microphones are placed along the length of the arms. The array is to be fastened to an articulated mount which allows it to be repositioned and be placed in a number of viewing positions. The ideal arms are symmetric airfoils that rotate about the longitudinal axis of the arm so that in free flow the airfoils point into the oncoming flow. Microphones placed at the leading edge will be located at stagnation points decreasing wind turbulence and boundary layer effects.

2015018, Jun 25, 2015

Dec 20, 2013

14/137817

Robert Patrick Dougherty - Bellevue WA, US
Kevin James Dimond - Seattle WA, US

OptiNav - Bellevue WA

H01Q 3/00

Functional beamforming is a vast improvement over classical beamforming methods. Let v be a power greater than unity. The v-th root of the array cross spectral matrix is computed and used in classical beamforming. The v-th power of the resulting beamform map is then computed. This procedure significantly reduced sidelobes, increasing the dynamic range of the results. Assuming the standard model of an incoherent source distribution, it is shown that the computed map values are greater than or equal to the underlying source strengths. Increasing v decreases the map values, steadily reducing sidelobes and peak widths. Quantitative component spectra can be computed by integrating the maps over regions of interest without the errors caused by sidelobes when integrating classical maps. Deconvolution processing is unnecessary. The time and other computer resources required for the computation are virtually identical to classical beamforming.

2015013, May 21, 2015

Nov 15, 2013

14/080807

Robert Patrick Dougherty - Bellevue WA, US
Kevin James Dimond - Seattle WA, US
Tessa Lynn Robinson - Covington WA, US
Navid Boostanimehr - Seattle WA, US

OptiNav - Bellevue WA

G01N 29/11

73599

A phased microphone imaging array and repeatable sound source are used in concert to determine absorption and reflection coefficients of materials and spaces across a continuous frequency domain. Coefficients can be determined at normal and oblique incidences to the surface using beamforming software. The invention can be used in-situ without needing to alter the environment in which it is testing. Accurate results can be obtained at any distance from the array and sound source to the testing surface with relatively little material.