And we placed infrasonic microphones around the elephants as we did these experiments.

在进行这些实验时，我们把次声传声器放置在大象周围。

They used underwater microphones to do so.

他们使用水下麦克风来做这件事。

I can hardly strum with all these microphones about here.

对着这么多麦克风 我真弹不出来。

And they don't use any microphones or recordings of sounds.

他们不使用任何麦克风或录音。

A few years later, he found himself building tiny microphones at a high-end audio company.

而几年后他在一家高端音频公司制造了微型麦克风。

Standard button to mute the microphone, and then power.

标准按钮，使麦克风静音，可以关闭电源。

In this way, we can turn everyday objects into microphones.

依靠这种方法，我们可以把任何物体变成麦克风。

The waterproof computers have underwater microphones attached.

这些防水电脑装有水下麦克风。

How do you turn this microphone on?

这个麦克风怎么打开？

They put a microphone in the light.

他们在灯里装了麦克风。

Now that's microphones, but what about cameras?

这是麦克风，那摄像头呢？

No microphones, no way to activate the virus.

没有麦克风 无法激活病毒。

And the front-facing studio microphones capture your voice perfectly.

前置录音摄像麦克风将完美捕捉你的声音。

I had like one of those pop star microphones.

我拿着一个流行歌星用的麦克风。

Harry started explaining about hidden microphones and recording equipment.

哈利便向他们解释什么是隐藏麦克风和录音装置。

One year, we hid a microphone in the gym.

有一年 我们在体育馆藏了一台麦克风。

What is the frequency that you know about these microphones?

你知道这些话筒的频率是多少吗？

They take a seat in the main hall while the sound engineers are still testing the microphones.

音响师们还在测试麦克风，他们就已经去大厅里找个位置坐下了。

To record this, scientists use ultrasonic microphones that detect frequencies human ears can't.

为了记录，科学家们使用了超声波麦克风，这种麦克风可以探测到人耳无法听到的频率。

Similarly tiny microphones would then listen for reflections from incoming objects.

类似的，小型麦克风会听取来自临近物体的反射。