Back to results
US 11,915,680 B2Granted
Method and system for active noise control
AssigneeShenzhen Goodix Technology Co., Ltd.
InventorsGuoliang Li, Lelin Wang, Wenkai Han, Hongjing Guo
Life of this patent
Estimating the term…
Abstract
Embodiments of the present application provide a method and system for active noise control, which can meet different needs of different consumers on sound quality of headphones. The method includes: determining an expected noise control curve of performing active noise control on a target object; determining a target filter according to the expected noise control curve and a filter model; and performing noise control processing on an external noise signal using the target filter.
Claims18
A method for active noise control, comprising:
- determining an expected noise control curve of performing active noise control on a target object;
- determining an expected noise control weight value of active noise control, according to the expected noise control curve;
- determining a reference noise weight value and an expected filter frequency response of active noise control;
- determining a target filter, according to the expected noise control weight value, the reference noise weight value, the expected filter frequency response and a filter model;
- and
- performing noise control processing on an external noise signal of the target object using the target filter;
- wherein the method further comprises:
- determining expected residual noise energy, comprising:
- determining an expected residual noise energy spectrum curve;
- and determining the expected residual noise energy based on the expected residual noise energy spectrum curve;
- and
- the determining the target filter, according to the expected noise control weight value, the reference noise weight value, the expected filter frequency response and the filter model, comprising:
- determining the target filter, according to the expected noise control weight value, the reference noise weight value, the expected filter frequency response, the expected residual noise energy and the filter model.
10 more elements
An active noise control system, comprising:
- a processing module, configured to determine an expected noise control curve of performing active noise control on a target object;
- determine an expected noise control weight value of active noise control, according to the expected noise control curve;
- and determine a reference noise weight value and an expected filter frequency response of active noise control;
- a filter coefficient calculation module, configured to determine a target filter, according to the expected noise control weight value, the reference noise weight value, the expected filter frequency response and a filter model;
- and
- a noise control module, configured to perform noise control processing on an external noise signal of the target object using the target filter;
- wherein the processing module is further configured to:
- determine expected residual noise energy;
- determine an expected residual noise energy spectrum curve;
- and
- determine the expected residual noise energy based on the expected residual noise energy spectrum curve;
- the filter coefficient calculation module is specifically configured to:
- determine the target filter, according to the expected noise control weight value, the reference noise weight value, the filter frequency response, the expected residual noise energy, and the filter model.
10 more elements
Dependencies are inferred from the claim text.