Noise reduction control device and control method
US9668046B2 · kind B2 · utility
0Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Sep 23, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A noise reduction control apparatus and method for detecting a noise signal with a microphone and generating a first control sound for attenuating the noise signal based on control characteristics of a control filter. Further, the first control sound is emitted and measured during a first period. By measuring a sound reflected from an object, a position of the object is estimated. Using the estimated position of the object, the noise is attenuated at the estimated position. Accordingly, it is possible to continuously reduce noise at an estimated position of an object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.