Asymmetric temperature compensation of microphone sensitivity at an active noise reduction system
US9202453B2 · kind B2 · utility
1Cited by
8References
16Claims
0Family size
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Key dates
| Filing date | Dec 5, 2012 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Oct 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/03
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Provided are a method and apparatus comprising an active noise reduction system. The active noise reduction system comprises an input transducer for transducing acoustic noise to a noise signal. The input transducer has a first sensitivity at a threshold temperature. The active noise reduction system includes circuitry that receives the noise signal and, in response, compensates for an effect by an ambient temperature on a second sensitivity of the input transducer by preventing the second sensitivity from being greater than the first sensitivity in response to a temperature deviation from the threshold temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.