四六级

　　Every year television stations receive hundreds of complaints about the loudness of advertisements. However. federal rules forbid the practice of making ads louder than the programming. In addition, television stations always operate at the highest sound level allowed for reasons of efficiency. According to one NBC executive. no difference exists in the peak sound level of ads and programming. Given this information. whydo commercials sound so loud?

　　The sensation of sound involves a variety of factors in addition to its peak level. Advertisers are skilful at creating the impression of loudness through their expert use of such factors. One major contributor to the perceived loudness of commercials is that much less variation in sound level occurs during a commercial. In regular programming the intensity of sound varies over a large range. However, sound levels in commercials tend to stay at or near peak levels.

　　Other "tricks of the trade" are also used. Because low-frequency sounds can mask higher frequency sounds. advertisers filter out any noises that may drown out the primary message. In addition, the human voice hasmore auditory (听觉的) impact in che middle frequency ranges. Advertisers electronically vary voice sounds so that they stay within such a frequency band. Another approach is to write the script so that lots of consonants(辅音) are used, because people are more aware of consonants than vowel (元音) sounds. Finally, advertisers try to begin commercials with sounds that are highly different from those of the programming within which the commercial is buried. Because people become adapted to the type of sounds coming from programming. a dramatic change in sound quality draws viewer attention. For example. notice how many commercials begin with a cheerful song of some type.

　　The attention-getting property of commercials can be seen by observing one-to-two-year-old children who happen to be playing around a television set. They may totally ignore the programming. However. when a commercial comes on.their attention is immediately drawn to it because of its dramatic sound quality.1. According to the passage, the maximum intensity of sound coming from commercials________.

　　A) does not exceed that of programs

　　B) is greater than that of programs

　　C) varies over a large range than that of programs

　　D) is less than that of programs

　　2. Commercials create che sensation of loudness because____________________.

　　A) TV stations always operate at the highest sound levels

　　B) their sound levels are kept around peak levels

　　C) their sound levels are kept in the middle frequency ranges

　　D) unlike regular programs their intensity of sound varies over a wide range

　　3. Many commercials begin with a cheerful song of some kind because_________________.

　　A) pop songs attract viewer attention

　　B) it can increase their loudness

　　C) advertisers want to make them sound different from regular programs

　　D) advertisers want to merge music with commercials

　　4. One of the reasons why commercials are able to attract viewer attention is that_____________.

　　A) the human voices in commercials have more auditory impact

　　B) people like cheerful songs that change dramatically in sound quality

　　C) high-frequency sounds are used to mask sounds that drown out the primary message

　　D) they possess sound qualities that make the viewer feel that something unusual is happening

　　5. In the passage, the author is trying to tell us________________.

　　A) how TV ads vary vocal sounds to attract attention

　　B) how the loudness of TV ads is overcome

　　C) how advertisers control the sound properties of TV ads

　　D) how the attention-getting properties of sounds are made use of in TV ads

　　参考答案：

　　1.根据文章的内容，电视广告中最高强度的声音_____________。

　　A)不会超过电视节目的声音

　　B)比电视节目的声音要强

　　C)强度在一个比电视节目声音强度要广的范围里发生变化

　　D)比电视节目的声音要弱

　　[A]第1段2句和第4句分别提到，联邦法律禁止广告声音大于节目的声音;国家广播公司的某个官员称，广告和节目的最大音量并无区别。由此可知，广告的声音强度并没有超过节目，因此A正确。

　　2.电视广告让人觉得声音很大，因为__________________。

　　A)电视台总是用最大的声音来播出节目

　　B) 电视广告的声音被保持在最高峰值

　　C) 电视广告的声音被保持在中等波段

　　D) 与一般的电视节目不同，电视广告的声音强度在一个很广的范围内变化

　　[B]第2段第1句指出，人们对声音的感觉会受音量峰值的影响，后面进一步说明为达到此目的，广告人使用的技巧。再结合本段最后一句，可知B项符合题意。

　　3.许多电视广告都以某种快乐的歌曲开始，因为____________________。

　　A)流行歌曲能够吸引观众的注意力

　　B)它能够提大广告的音量

　　C)广告商想要让广告听上去与一般的电视节目不同

　　D)广告商想要将音乐与广告融为一体

　　[C]第3段例数第2句提到，人们已经适应了节目中传来的那种声音，因此很多广告使用欢快的歌曲作为开头，希望以声音的强烈变化吸引观众的注意力。C正确，其他选项没有原文依据。

　　4.电视广告能够吸引观众注意力的其中一个原因是________________。

　　A)电视广告中的人的声音能产生更强的听觉影响

　　B)人们喜欢声音质量有很大变化的欢快的歌曲

　　C)高频的声音是用来修饰那些压过主要信息的声音的

　　D)电视广告的声音质量能够让观众感到有什么特别的事情正在发生

　　[D]第3段指出，广告人采用与节目明显不同的声音制作广告以吸引人们的注意力。最后一段也指出广告独特的音质能立即吸引人们的注意,因此D正确。A是将音量保持到最高的技巧，因而与题意不符;C明显与文中的表述相悖;B不能由文章推出。

　　5.作者在文章中想要告诉我们________________。

　　A)电视广告是怎样改变声音来吸引观众的注意力的

　　B)电视广告的大声音是怎样被克服的

　　C)广告商是怎样控制电视广告的声音特性的

　　D)声音吸引人的注意力的特性是怎样在电视广告中得以运用的

　　[D]询问文章主旨。从全文来看，作者一开始就提出“为什么商业广告的声音听起来那么大”的问题，然后剖析其中的原因，说明技术人员是怎样利用有特质的声音来制作广告的。因此，D正确。

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