Frequency domain signal processor for close talking differential microphone array
US8363846B1 · kind B1 · utility
1Cited by
4References
18Claims
0Family size
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Key dates
| Filing date | Mar 9, 2007 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Jul 12, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/6008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for processing close talking differential microphone array (CTDMA) signals in which incoming microphone signals are transformed from time domain signals to frequency domain signals having separable magnitude and phase information. Processing of the frequency domain signals is performed using the magnitude information, following which phase information is reintroduced using phase information of one of the original frequency domain signals. As a result, high pass filtering effects of conventional differential signal processing of CTDMA signals are substantially avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.