An AD (analog-digital) converter, a signal conditioning circuit and an environment noise sensor can also be arranged so as to monitor directly.

还可设置AD转换器、信号调理电 路和环境噪声传感器，以便直接监测。

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A sensor in the Jawbone unit picks up vibrations in the cheeks, while tiny microphones sort out background noise and cancel it.

耳机中的传感器感受脸颊的振动度，微型麦克风清理和消除背景中的噪音。

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This way the exposure can always be decreased afterwards — while still maintaining minimal image noise because more light was collected at the digital sensor.

这样的话，可以通过后期处理减弱曝光度，同时因为相机感光较多，可以把噪点限制到最少。

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The Leica M8 doesn't just have a pretty body, nor is it resting on the laurels of its predecessors: it's got a 10.3 megapixel resolution, with a low-noise CCD image sensor that starts at ISO 160 but that can also kick up to ISO 2500.

ENGADGET: Leica M8 combines old-world charm with new-world tech

Just as grain size in silver halide film ultimately limits the amount of detail you can see in a photograph, the background noise produced by the sensor does much the same in digital imaging.

ECONOMIST: A die-hard analog photographer goes digital

By combining a state-of-the-art image processing engine and back-illuminated CMOS image sensor with low-noise, even up to ISO 6400, and approximately 16.0 effective megapixels, the PENTAX X-5 provides users with very high-resolution images.

ENGADGET: Pentax intros X-5 superzoom camera with 26x lens, tiltable LCD