Adaptive suppression for removing nuisance audio
US10504501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3028
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Described herein is a method and audio capture system for suppressing noise due to mechanical disturbances in an audio capture system. In one embodiment a method includes the steps of: a) receiving an input audio signal from a microphone; b) receiving an input reference signal separate from the input audio signal; c) processing the input reference signal to generate a control signal for identifying a noise event; d) in response to the control signal, estimating a contribution of the noise event to the input audio signal by applying an adaptive filter to a sliding temporal window of the control signal in the frequency domain; and e) based on the estimated contribution, selectively modifying the input audio signal to generate an output audio signal in which the noise arising from the noise event is at least partially suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.