Patent ID: 11937054
Assignee: SYNAPTICS INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. An audio processing device for enhancing multi-source audio by multi-source tracking and voice activity detection, comprising:
audio input circuitry configured to receive one or more multi-source audio signals from a microphone array; and
one or more processor configured to:
construct a multi-dimensional space defined by a number of microphone pairs from the microphone array;
compute, for each microphone pair, a time difference of arrival (TDOA) location point corresponding to an azimuth angle and an elevation angle of an incident ray based on a distance and an angle between two microphones in the respective pair;
form a mesh of TDOA location points by iterating all microphone pairs and all scans of azimuth angles and elevation angles; and
update a plurality of audio tracks based on the mesh of TDOA location points.