The statistical capability of estimate of sinusoidal parameter in complex noise is researched in detail and the corresponding CRLB is given.

详细研究了复噪声中正弦参数估计的统计性能，给出了模型中各参数估计的克拉美罗限；

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This filter can effectively restrain background noise and acquire clear speech signal when applied in speech signal pick-up from the background with complex noise.

将此滤波器应用于复杂噪音背景的话音信号提取，能很好地抑制背景噪声，从而获得清晰的话音信号。

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This paper analyses channel properties of low-voltage power line channels. Aiming at the slow-variant and complex noise of channel, an estimation algorithm is put forward.

分析了低压电力线信道特性，针对信道慢时变特性及噪声复杂的特点，提出一种适用于低压电力线通信信道的直接决策估计算法。

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The residents argued the complex of seven turbines, caused a noise nuisance.

BBC: Legal protest over windfarm

In later stages of a business, if used correctly, financial statements can reduce a complex reality into elegant simplicity, so you can separate noise from what really matters, enabling a large battleship of a company to be turned away from danger.

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Their complex algorithms analyzed every wiggle in the financial markets and traded on this noise with lighting speed.

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