首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbi
Every year television stations receive hundreds of complaints about the loudness of advertisements. However, federal rules forbi
admin
2013-05-14
88
问题
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, why do 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 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 has more auditory impact in the 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 are used, because people are more ware of consonants than vowel 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.
One of the reasons why commercials are able to attract viewer attention is that
选项
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
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/BXXd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
ANewStrategytoOvercomeBreastCancerPost-menopausal(绝经后的)womenwhowalkforanhouradaycancuttheirchanceofbreas
TheNationalTrustTheNationalTrustinBritainplaysanincreasinglyimportantpartinthepreservationforpublicenjoyme
WhenOurWordsCollide"Wannabuyabody?"ThatwastheopeninglineofmorethanafewphonecallsIgotfromfreelance(自由职
IsThereaWaytoKeeptheBritain’sEconomyGrowingIntoday’sknowledgeeconomy,nationssurviveonthethingstheydobes
TheStockExchangeisinturmoilfollowingahugewaveofselling.
FederalDepositInsuranceCorporationBefore1933,andparticularlyduringtheperiod1929—1933,bankfailureswerenotuncom
Themainideaofthepassageisabout______.Howareicebergsformed?
Themainideaofthepassageisabout______.Theword"it"inline2refersto______.
AttheUniversityofVirginiainCharlottesville,psychologyprofessorBellaDePaulogot77studentsand70townspeopletovolun
WherewouldhestayafterhisscholarshipyearinLondonwasover?
随机试题
关于体液调节,下述哪项是错误的
副交感神经兴奋时
显示跟骨骨刺的最佳体位是
产妇,32岁,妊娠38周,于某日2:30pm顺产。6:40pm产妇主诉腹胀、腹痛。视诊:下腹膀胱区隆起;叩诊:耻骨联合上鼓音。护士采取的正确的护理措施是
个人质押贷款中,经办人员接到客户提出的质押贷款申请后,应对质物的()进行调查。
2016年1—5月份,全国规模以上工业企业实现利润总额23816.4亿元,同比增长6.4%,增速比1—4月份回落0.1个百分点。1—5月份,在规模以上工业企业中,国有控股企业实现利润总额4290.2亿元,同比下降7.3%;集体企业实现利润总额17
习得性无助是指将多次失败无条件地归因于自身因素的个体,会习得一种自我失控感,认为自己的一切努力都是无效的,因此会放弃努力,被动屈从,变得淡漠而毫无激情。根据上述定义,下列不属于习得性无助的是:
IntheUnitedStatesduring1992,anyfamilyoffourwithanannualcashincomeoflessthan$14,335(beforetaxes)wasconsider
Whatpersonalqualitiesaredesirableinateacher?Probablynotwopeoplewoulddrawupapproximatelysimilarlists,butI【M1】_
Haveyoueverthoughtaboutinventingsomething?Wereyouworriedthatyourideawastoostrangeorunrealistic?Well,maybeyou
最新回复
(
0
)