Microphone apparatus and electronic device having linear microphone array with non-uniform configuration and method of processing sound signal
US11109153B2 · kind B2 · utility
0Cited by
3References
11Claims
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Inventor
Key dates
| Filing date | Nov 20, 2019 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Nov 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microphone apparatus is provided. The microphone apparatus includes a microphone array and an integrated circuit. The microphone array includes at least three microphones arranged in a straight line with a non-uniform configuration. The integrated circuit is electrically connected to the microphone array. The integrated circuit is configured to process a merged sound signal from different combinations of microphones using a time-domain filter to generate an output sound signal. The sound gain of the output sound signal at each sound-receiving angle of each frequency is substantially uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.