Sound source localization and isolation apparatuses, methods and systems

摘要

A processor-implemented method for spatial sound localization and isolation is described. The method includes segmenting, via a processor, each of a plurality of source signals detected by a plurality of sensors, into a plurality of time frames. For each time frame, the method further includes obtaining, via a processor, a plurality of direction of arrival (DOA) estimates from the plurality of sensors, discretizing an area of interest into a plurality of grid points, calculating, via the processor, DOA at each of grid points, comparing, via the processor, the DOA estimates with the computed DOAs. If the number of sources is more than 1, the method includes obtaining via the processor, a plurality of combinations of DOA estimates, from amongst the plurality of combinations, estimating, via the processor, one or more initial candidate locations corresponding to each of the combinations, selecting location of the sources from amongst the initial candidate locations.

主权项

1. A processor-implemented method for spatial sound localization, the method comprising:
obtaining, via a processor, a plurality of direction of arrival (DOA) estimates from a plurality of sensors; determining, via the processor, a set of intersection points based on the DOA estimates; receiving, via the processor, a number of sources in a current time frame; if the number of sources is more than 1, obtaining via the processor, a plurality of regions by dividing a plurality of possible locations of sources into a predefined number of combinations of DOA estimates; from amongst the plurality of regions, selecting, via the processor, a region having maximum number of intersection points; obtaining via the processor, a centroid of the intersection points in the selected region; estimating location of one of the plurality of sources based on the centroid; selecting the remaining region and obtaining a centroid of intersection points in the remaining region to yield location of the remaining source.