Active noise control using variable step-size adaptation
US10163432B2 · kind B2 · utility
2Cited by
7References
21Claims
0Family size
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Key dates
| Filing date | Feb 23, 2017 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Feb 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3055
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A system and method (referred to as the system) that actively reduces noise in a vehicle. The system generates one or more control output signals to drive multiple loudspeakers; and adapts multiple control coefficients of a control filter based on multiple secondary path transfer functions. The secondary path transfer functions model the acoustic paths between each loudspeaker and multiple microphones. The multiple control coefficients are time varying and frequency dependent and the rate the plurality control coefficients adapt is based on an adaptive step size based on one or more step size criteria.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.