FFT-based technique for adaptive directionality of dual microphones
US6668062B1 · kind B1 · utility
102Cited by
8References
10Claims
0Family size
Assignee
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Key dates
| Filing date | May 9, 2000 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | May 9, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/407
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention comprises an adaptive directionality dual microphone system in which the time domain data from the first and second microphones is converted into frequency domain data. The frequency domain data is then manipulated to produce a noise-canceled signal which is converted in an Inverse Fourier Transform block into noise-cancel time domain data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.