System and method for virtual navigation of sound fields through interpolation of signals from an array of microphone assemblies

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United States of America Patent

PATENT NO 11032663
SERIAL NO

16338078

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Abstract

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The system and method for virtual navigation of a sound field through interpolation of the signals from an array of microphone assemblies utilizes an array of two or more higher-order Ambisonics (HOA) microphone assemblies, which measure spherical harmonic coefficients (SHCs) of the sound field from spatially-distinct vantage points, to estimate the SHCs at an intermediate listening position. First, sound sources near to the microphone assemblies are detected and located. Simultaneously, the desired listening position is received. Only the microphone assemblies that are nearer to said desired listening position than to any near sources are considered valid for interpolation. The SHCs from these valid microphone assemblies are then interpolated using a combination of weighted averaging and linear translation filters. The result is an estimate of the SHCs that would have been captured by a HOA microphone assembly placed in the original sound field at the desired listening position.

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Patent Owner(s)

Patent OwnerAddress
THE TRUSTEES OF PRINCETON UNIVERSITY87 PROSPECT AVENUE PRINCETON NJ 08544

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choueiri, Edgar Y Princeton, US 4 50
Tylka, Joseph Princeton, US 6 7

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