You are the voice, so you're an extension of their voices.

你们是他们延伸。

Intonation is the rise and fall in one's voice when speaking.

语调是说话时起伏。

I'd probably be scared of a guy using a fake voice.

我会害怕压人。

We realise the importance of our voice when we are silenced.

在沉默中我们认识到重要。

The Humpback has a phenomenal memory for sound.

座头鲸对记忆惊人。

Turns his head in the direction of sounds.

他把头转向有方向。

And we wanted to see if technology could change that.

最需要听到他们人。

Because the owl started to inspect the origin of the sounds.

因为它们开始视察来源。

The pitch of that sound depends on the frequency of the compressions.

调由压缩频率决定。

An echo is a reflection of sound.

回是反射作用。

Speech synthesis is the artificial production of human speech.

合成就是人类人造产物。

The power of the voice of women frightens them.

他们害怕女性力量。

In many places the echo of a voice came back five times stronger than the original voice.

在许多地方，回以高于原来五倍返回。

Control the speed and the rhythm of your voice.

控制你说话时速度和节奏。

It is a series of markings that represent spoken sounds.

它是一系列表示标记。

Why would anyone invent a letter that has no sound?

为什么会有人发明没有字母啊？

So that's the stress of sound.

这就是重。

We've talked a little bit about sound production here.

我们探讨了一些关于产生问题。

Exactly, the key is receiving the reflected echo of the sound.

没错，关键是接收到反射回。

Digital technology makes both the picture and the sound clear.

数字技术保证了图像和清晰度。