公开(公告)号：US20230300516A1

公开(公告)日：2023-09-21

申请号：US18017072

申请日：2021-07-12

Applicant: STARKEY LABORATORIES, INC.

Inventor： Terence Betlehem ,  Wenyu Jin

IPC: H04R1/10 ,  G10L21/0224 ,  G10K11/178 ,  H04R25/00

CPC classification number: H04R1/1083 ,  G10L21/0224 ,  G10K11/17854 ,  H04R25/505 ,  G10K11/17817 ,  H04R2460/01 ,  G10K2210/1081 ,  G10K2210/30232

Abstract: An ear-wearable device is operable to receive a reference signal from outside an ear canal of a user and an error signal from inside of the ear canal. A physical propagation path between the outside and inside of the ear canal defines a primary path, and amplified sound produced inside of the ear canal propagates over a secondary path to combine with direct noise at the ear canal. A noise signal inside the ear canal is estimated from the reference signal based on estimate of the primary and secondary paths. The estimated noise signal and the error signal are used to produce coefficients of an adaptive filter. The adaptive filter is used to produce an anti-noise signal, which is used actively cancel noise in the ear canal.

公开(公告)号：US20240323618A1

公开(公告)日：2024-09-26

申请号：US18610852

申请日：2024-03-20

Applicant: Starkey Laboratories, Inc.

Inventor： Daniel A. Smieja ,  Masahiro Sunohara ,  Terence Betlehem

IPC: H04R25/00 ,  H03H17/02 ,  H03H17/04 ,  H03H17/06

CPC classification number: H04R25/505 ,  H03H17/0213 ,  H03H17/025 ,  H03H17/04 ,  H03H17/06 ,  H04R2460/01

Abstract: Disclosed herein, among other things, are systems and methods for reducing the comb filtering for hearing devices. A method includes determining an effective time delay as a function of frequency between a direct path from a sound source to an eardrum of a wearer of a hearing device and an amplified path from the sound source through the hearing device to the eardrum of the wearer, and calculating a set of cancellation frequencies based at least in part on the determined effective time delay. The method also includes comparing an aided gain response and a real-ear occluded gain response of the hearing device, and determining one or more spectral interaction regions based at least in part on the comparison. A subset of cancellation frequencies is determined by comparing the spectral interaction regions with the set of cancellation frequencies, and a filter is constructed using the subset of cancellation frequencies and a determined attenuation configured to reduce comb filtering.