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METHOD AND APPARATUS FOR IMPROVING NOISE DISCRIMINATION USING ENHANCED PHASE DIFFERENCE VALUE
METHOD AND APPARATUS FOR IMPROVING NOISE DISCRIMINATION USING ENHANCED PHASE DIFFERENCE VALUE
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机译:利用增强的相位差值改善噪声识别的方法和装置
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摘要
Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.
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