公开(公告)号：US20190014422A1

公开(公告)日：2019-01-10

申请号：US15643074

申请日：2017-07-06

Applicant: Oticon A/S

Inventor： Thomas LUNNER ,  Fredrik GUSTAFSSON ,  David LINDGREN ,  Gustaf HENDEBY

IPC: H04R25/00

Abstract: A hearing device comprises a sound system for estimating the direction of arrival of sound emitted by one or more sound sources creating a sound field. The sound system comprises an array of N sound receiving transducers (microphones), each providing an electric input signal, a processing unit comprising a) a model unit comprising a parametric model configured to be able to describe the sound field at the array as a function of the direction of arrival in a region surrounding and adjacent to the array; b) a model optimizing unit configured to optimize said model with respect to its parameters based on said sound samples; c) a cost optimizing unit configured to minimize a cost function of the model with respect to said direction of arrivals; d) an estimating unit configured to estimate the direction of arrival based on said parametric model with the optimized parameters and the optimized cost function.