Title:
アクティブノイズコントロールシステムにおける２次経路の適応モデル化
Document Type and Number:
Japanese Patent JP6625765
Kind Code:
B2
Abstract:
The technology described herein can be embodied in a computer implemented method that includes detecting, by one or more processing devices, onset of an unstable condition in an active noise control system. The method also includes obtaining, responsive to detecting the onset of the unstable condition, updated filter coefficients for a system-identification filter configured to represent a transfer function of a secondary path of the active noise control system. The updated filter coefficients are generated using a set of multiple subband adaptive filters, wherein filter coefficients of each subband adaptive filter in the set are configured to adapt to changes in a corresponding portion of a frequency range associated with potential unstable conditions in the active noise control system. The method also includes programming the system identification filter with the updated coefficients to affect operation of the active noise control system.
Inventors:
Emery em ku
Application Number:
JP2018551189A
Publication Date:
December 25, 2019
Filing Date:
March 28, 2017
Export Citation:
Assignee:
BOSE CORPORATION
International Classes:
H03H21/00; G10K11/178; H04R1/10
Domestic Patent References:
| JP2012249294A | ||||
| JP8095577A | ||||
| JP2007019595A |
Foreign References:
| US20100014685 | ||||
| US20110216807 |
Attorney, Agent or Firm:
Yasuhiko Murayama
Shinya Mitsuhiro
Tatsuhiko Abe
Shinya Mitsuhiro
Tatsuhiko Abe