Digital silicon microphone with configurable sensitivity, frequency response and noise transfer function
US9936304B2 · kind B2 · utility
3Cited by
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26Claims
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Key dates
| Filing date | Aug 23, 2016 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Aug 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/3037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In some embodiments, a microphone system includes a multi-bit delta-sigma modulator configured to be coupled to a microphone and configured to covert an output of the microphone into a first digital signal with a multi-bit resolution at a first output of the multi-bit delta-sigma modulator. The microphone system also includes a digital noise shaper coupled to the first output of the multi-bit delta-sigma modulator, and configured to convert a multi-bit digital input of the digital noise shaper into a one-bit digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.