公开(公告)号：US10321241B2

公开(公告)日：2019-06-11

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 ,  G10L21/0216

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.

公开(公告)号：US09369102B2

公开(公告)日：2016-06-14

申请号：US14808705

申请日：2015-07-24

Applicant: Oticon A/S

Inventor： Niels Henrik Pontoppidan ,  Thomas Lunner ,  Marianna Vatti ,  Lars Bramsløw

IPC: H03G5/00 ,  H03G3/00 ,  H04R25/00 ,  H03C1/00 ,  H03C5/00 ,  H03C3/40 ,  G10L21/02 ,  G10L21/0364

CPC classification number: H03G3/00 ,  G10L21/0205 ,  G10L21/0364 ,  H03C1/00 ,  H03C3/40 ,  H03C5/00 ,  H04R25/353 ,  H04R25/356 ,  H04R25/43 ,  H04R2225/43

Abstract: A method for processing an audio signal (i(t)), comprises: receiving a first set (x(t)) of time-varying signals representing a first sound comprised in the audio signal (i(t)), the first set (x(t)) of time-varying signals comprising an amplitude modulation signal (a(t)), a carrier frequency signal (fc(t)), a pitch signal (f0(t)) and an FM index signal (h(t)); and modifying the first set (x(t)) of time-varying signals by modifying the amplitude of the FM index signal (h(t)), thereby providing a first modified set (x′(t)) of time-varying signals. The resulting first modified set (x′(t)) of time-varying signals may subsequently be modulated to provide an audio output signal.