发明名称 |
Frequency Domain Signal Processor For Close Talking Differential Microphone Array |
摘要 |
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.
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申请公布号 |
US2013121499(A1) |
申请公布日期 |
2013.05.16 |
申请号 |
US201313734114 |
申请日期 |
2013.01.04 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION;NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
LI YUNHONG;SUN LIN;MA WEI |
分类号 |
G10K11/178 |
主分类号 |
G10K11/178 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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