Oticon A/s

Telefonaktiebolaget Lm Ericsson (Publ)

David Lindgren

Fredrik Gunnarsson

Johan Moe

Thomas Lunner

András Veres

Gunnar Heikkilä

Fredrik Gustafsson

Andras Valkó

Gustaf Hendeby

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.

Direction of arrival estimation in miniature devices using a sound sensor array

Growing community of inventors

Linköping, Sweden

David Lindgren