Invention Grant
- Patent Title: Noise controlling method and system
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Application No.: US17626014Application Date: 2020-07-09
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Publication No.: US11922918B2Publication Date: 2024-03-05
- Inventor: Nicolas Jean Pignier Delafontaine , Christophe Mattei , Robert Risberg
- Applicant: Faurecia Creo AB
- Applicant Address: SE Linköping
- Assignee: Faurecia Creo AB
- Current Assignee: Faurecia Creo AB
- Current Assignee Address: SE Linköping
- Agency: Kagan Binder, PLLC
- Priority: EP 185741 2019.07.11
- International Application: PCT/EP2020/069333 2020.07.09
- International Announcement: WO2021/005142A 2021.01.14
- Date entered country: 2022-01-10
- Main IPC: G10K11/178
- IPC: G10K11/178

Abstract:
A noise controlling method includes generating a reference signal representing a primary noise, generating a secondary noise in response to a control signal for cancelling the primary noise, generating an error signal representing a superposition of the primary and secondary noises at a position, generating an additional reference signal, secondary noise, or additional error signal, and generating the control signal for generating the secondary noise using adaptive subband filtering based on the reference and error signals, the generating the control signal including decomposing the reference signal and the error signal into a subband reference and error signal for each subband, updating subband adaptive filters for a subband based on the subband reference signal and the subband error signal, updating a fullband adaptive filter based on the updated subband adaptive filter, and generating the control signal by filtering the reference signal by the updated fullband adaptive filter.
Public/Granted literature
- US20220254328A1 NOISE CONTROLLING METHOD AND SYSTEM Public/Granted day:2022-08-11
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