笔记本后台静默录像

Our electronic devices can occasionally surprise us with unexpected and extremely irritating noises, so finding a solution is a priority. But what do you do when all the usual ‘suspects’ are not the cause of the problem? Today’s SuperUser Q&A post has some helpful advice for a desperate reader.

我们的电子设备有时会给我们带来意想不到且极具刺激性的噪音，因此寻找解决方案是当务之急。 但是，当所有常见的“怀疑”都不是问题的根源时，您该怎么办？ 今天的《超级用户问答》帖子为绝望的读者提供了一些有用的建议。

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

今天的“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。

问题 (The Question)

SuperUser reader Szabolcs wants to know how to silence a non-HDD, non-fan related buzzing sound on his laptop:

超级用户阅读器Szabolcs想知道如何使笔记本电脑上非HDD，非风扇相关的嗡嗡声静音：

I have a new Dell Inspiron 15 7547 laptop and it makes an annoying high-pitched buzzing sound whenever running on AC power.

我有一台新的Dell Inspiron 15 7547笔记本电脑，使用交流电源运行时，它会发出令人讨厌的高音蜂鸣声。

This is not HDD noise (there is a separate normal sound when the HDD is working). It is not fan noise (that is also present and it is different/quieter). It is also not coming from the speakers (the noise does not respond to volume control).

这不是HDD噪音(HDD工作时会有单独的正常声音)。 这不是风扇噪音(也存在，并且不同/更安静)。 它也不来自扬声器(噪音不响应音量控制)。

The buzzing noise is correlated with CPU usage. Low CPU usage results in a loud noise while high CPU usage results in no noise. For example, continuously scrolling in the browser will shut it up.

嗡嗡声与CPU使用率相关。 CPU使用率低会产生很大的噪音，而CPU使用率高会导致没有噪音。 例如，在浏览器中连续滚动将其关闭。

I know that electronic components can make noise, and I believe that this is the case. Is there anything I can do to shut it up? The buzzing is just as loud as the HDD’s noise, but it never stops and becomes really annoying.

我知道电子组件会产生噪音，我相信情况就是如此。 有什么我可以关闭的吗？ 嗡嗡声与HDD的声音一样响亮，但它永不停止，变得非常烦人。

Is there a way to silence an irritating buzzing sound like this?

有没有办法使像这样令人讨厌的嗡嗡声静音？

答案 (The Answer)

SuperUser contributors Josip Medved and Roger have the answer for us. First up, Josip Medved:

超级用户贡献者Josip Medved和Roger为我们提供了答案。 首先，Josip Medved：

As the noise is connected to the load (and thus current consumption), this might be a case of a noisy DC-to-DC converter whose switching frequency falls into the audible range.

由于噪声与负载(以及电流消耗)有关，因此这可能是带有噪声的DC-DC转换器的情况，其开关频率落在可听范围内。

It is hard to tell whether it is serious or not, but I would definitely look into replacing the laptop if it is still under warranty as a big shift in DC-to-DC switching frequency can quite often have an impact on the voltages it generates.

很难确定它是否严重，但是如果它仍在保修期内，我肯定会考虑更换笔记本电脑，因为DC-DC开关频率的较大变化通常会对其产生的电压产生影响。

Even if it is currently working without problems, you might find some of more sensitive components just dropping dead one-by-one over the long-term.

即使它目前可以正常工作，您也可能会发现一些更敏感的组件从长远来看会一一摔坏。

Followed by the answer from Roger:

随后是罗杰的回答：

I think I had the same problem a while back. When the CPU is working at full speed, it is silent, but when the workload is lower, the CPU goes into power-saving mode. That is when it started making noise.

我想我前一段时间也有同样的问题。 当CPU全速工作时，它处于静音状态，但是当工作负载较低时，CPU进入省电模式。 那是它开始发出声音的时候。

My problem was solved by switching off D-States in the BIOS. Amazingly, neither the computer support at our company nor the two engineers DELL sent out to fix the noise could solve my problem. Luckily, I found the answer on the Internet.

我的问题通过关闭BIOS中的D状态来解决。 令人惊讶的是，无论是我们公司的计算机支持还是DELL派出的两名工程师来解决噪声问题都无法解决我的问题。 幸运的是，我在Internet上找到了答案。

Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? .

有什么补充说明吗？ 在评论中听起来不错。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 。

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笔记本后台静默录像