Clearone, Inc.

Trisha Batzer

This disclosure describes an apparatus and method of an embodiment of an invention that is improves Direction of Arrival (DOA) determinations. This embodiment of the apparatus includes a plurality of microphones coupled together as a microphone array used for beamforming, the plurality of microphones are positioned at predetermined locations and produce audio signals to be used to form a directional pickup pattern; a processor, memory, storage, and a power supply operably coupled to the microphone array, the processor configured to execute the following steps: processing an algorithm for a Direction of Arrival (DOA) determination; supplemental processing that improves the DOA processing.

Wideband DOA improvements for fixed and dynamic beamformers

This disclosure describes a wide band array that uses wideband beamforming with interference cancellation at multiple independent frequencies and spatial locations and main lobe steering at multiple independent frequencies and spatial locations. One embodiment uses one through N analysis filter bandscoupled to one through N narrowband beamformerswith the output processed through one through N synthesis bands and summed together to produce the full spectrum output signal. Another embodiment uses one through M sensors with Discrete Fourier Transforms (DFT) and one through N frequency binscoupled to one through N narrowband beamformersprocessed through an Inverse DFT to produce the full spectrum output signal. Another embodiment uses one through N sensor subarrays and one through N frequency bandscoupled to one through N narrowband beamformerssummed together to produce the full spectrum output signal. Another embodiment uses one through M sensor arrays with one through N frequency bandscoupled to one through N narrowband beamformerssummed together to produce the full spectrum output signal

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North Salt Lake, UT, United States of America

Trisha Batzer