And watched three-spined stickleback fish hunt water fleas, to the accompaniment of either white noise calibrated to match the noise level of speedboats or a silent track as a control.

并控制三刺鱼在跟快艇噪音程度相当的白噪声中，或者完全安静的环境之下，观察它们捕食水蚤的情况。

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Although these methods can control and reduce the noise in most measurements, some techniques just prevent noise from entering the system, whereas others remove only extraneous noise from the signal.

虽然这些方法在大多数测量中能控制和减少噪声，但是一些技术只是防止噪声进入系统，而其他只是去除信号中的外来噪声。

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Noise suppression is classified into two classes: Passive Noise Control and Active Noise Control.

噪声抑制方法可以分为两大类：被动噪声抑制和主动噪声抑制。

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They found the unit does indeed impress in its 9-stop expanded dynamic range, beautiful color and excellent noise control yet that range is accompanied by some serious drawbacks, including "glacially slow" shooting and writing speeds and mediocre autofocus which is particularly weak in low lighting situations.

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Capture HD video using Auto, Manual, Aperture-priority or Custom Movie Mode and enjoy several creative options also available for still shooting, including COOLPIX Picture Control and noise reduction while flexibly adjusting ISO sensitivity, shutter speed and white balance.

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The artists said villagers should not be concerned about any noise issues, and that control of the project would be very much in their hands.

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