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托福TPO-29 Lecture 2(上)

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Listen to part of a lecture in an architecture class.

听一段建筑课程。

Today I'd like to talk a bit about the relationship between the built world and sound.

今天我想讲一点建筑和声音的关系。

Uh, the design of buildings like concert halls or theaters.

像是音乐厅或剧院的建筑设计。

So, what's the most important aspect in the design of such a building?

设计这些建筑时最重要的是什么?

Acoustics?

音响效果?

Yes. Now, people have been concerned about how sound carries in auditoriums and theaters for at least 2,000 years.

对。至少两千年来,人们都很关心声音在礼堂和剧院里是怎么传递的。

建筑学与声音.jpg

But it was not until the beginning of the twentieth century that architectural acoustics became a scientific field - that was when the physicist Wallace Sabine started to do extensive studies on reverberation.

但直到20世纪初,物理学家华莱士·赛宾开始广泛研究回声现象,建筑声学才成为了一门科学。

Sabine wanted to find out why the audience could not understand speakers at a lecture hall in Boston.

赛宾想知道,在波士顿的一个讲堂里,为什么观众不能理解发言人的意思。

He designed a series of studies on reverberation to figure it out.

他针对回声现象设计了一系列研究,来寻找真相。

So, what is reverberation? It's the persistence of sound in a room after the source has stopped making sound.

什么是回声现象?就是在房间中,声源停止发声后,声音仍然持续的现象。

You see, sound made in a room reflects off the walls, floors and ceiling.

在房间里发出的声音,会在墙壁、地板和天花板反射回来。

That's the reverberant sound.

那就是回声。

The time it takes for the reverberant sound to die down is important for the acoustic quality of a room.

回声彻底消失所用的时间长短,对一个房间的音响效果至关重要。

Sabine recognized this and he came up with an equation to measure a room's reverberation time.

赛宾发现了这一点,他提出一个等式,能测出房间的回声时间。

So, what happens if the reverberation time is very long?

那么,如果回声时间很长,会发生什么呢?

Wouldn't it be difficult to hear new sounds if you can still hear the old sounds?

如果你还能听见之前的声音,要听新的声音不就很困难了吗?

Exactly. A long reverberation time may cause musical notes to drown one another out.

对。长时间回声可能会导致音符一个压过一个。

On the other hand, if the reverberation time is very short... meaning, the reverberations are absorbed very quickly, the room is called dead.

另一方面,假如回声时间很短……意味着,回声吸收得很快,房间就被成为“死房间”。

Performers would feel they have to struggle to fill the room with sound.

表演者会觉得他们要努力制造声音,填满房间。

We don't want that.

我们可不想这样。

重点单词   查看全部解释    
source [sɔ:s]

想一想再看

n. 发源地,来源,原始资料

 
persistence [pə'sistəns]

想一想再看

n. 坚持,毅力

 
ceiling ['si:liŋ]

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n. 天花板,上限

联想记忆
quality ['kwɔliti]

想一想再看

n. 品质,特质,才能
adj. 高品质的

 
measure ['meʒə]

想一想再看

n. 措施,办法,量度,尺寸
v. 测量,量

联想记忆
concerned [kən'sə:nd]

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adj. 担忧的,关心的

 
equation [i'kweiʃən]

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n. 相等,方程(式), 等式,均衡

联想记忆
concert ['kɔnsət]

想一想再看

n. 音乐会,一致,和谐
vt. 制定计划,通

 
absorbed [əb'sɔ:bd]

想一想再看

adj. 一心一意的;被吸收的 v. 吸收;使全神贯注(

 
figure ['figə]

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n. 图形,数字,形状; 人物,外形,体型
v

联想记忆

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