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VOA慢速英语2010年-PEOPLE IN AMERICA - Pioneers Who Shape

时间:2010-02-01 06:22来源:互联网 提供网友:feiwu   字体: [ ]
    (单词翻译:双击或拖选)

BARBARA KLEIN:

I’m Barbara Klein.

STEVE EMBER:

And I’m Steve Ember with PEOPLE IN AMERICA in VOA Special English. Today, we will tell about several men who influenced the development of radio.

BARBARA KLEIN:

Some people say radio was invented by Guglielmo Marconi of Italy. Marconi sent the first radio communication signals through the air in eighteen ninety-five. In fact, no one person can be called the inventor of radio. Many people, including several Americans, helped to develop radio. You may not know their names. However, their work affected1 many people.

Over the years, radio has become one of the most important forms of communication. It can be used for two- way communication, such as between a ship and land. Scientists even use radio to communicate into space. And radio broadcasts let people send words, music and information to any part of the world.

STEVE EMBER:

William Shockley and Lee De Forest

The first experimental radio broadcasts in the United States were made in the early nineteen hundreds. One of the first broadcasts came from the Metropolitan2 Opera House in New York City in nineteen ten. It included music by the great singer Enrico Caruso. An American inventor, Lee De Forest, produced that broadcast.

Only a few people could hear the broadcast. Some were people in the New York area who had built radio receivers. Some ships at sea and military radio stations received the broadcast. Many newspapers of the day reported on the event. The name of Lee De Forest became part of broadcasting history.

BARBARA KLEIN:

De Forest developed some of the technology used in early radio. During his lifetime, he invented hundreds of devices that were used in telephones, shortwave radio broadcasts, and similar technology.

His most famous invention was the vacuum tube, or electron tube. In nineteen-oh-six, the electron tube was considered the single most important development in electronics3. The device made it possible to strengthen radio signals and to send them over long distances. It was a major reason for the fast growth of the electronics and communications industries in the early part of the twentieth century.

STEVE EMBER:

Edwin Armstrong was another American inventor who was important in the development of electronics and radio communication. Armstrong developed technology that helped to improve radio reception. He discovered ways to limit unwanted radio signals. Edwin Armstrong also was a leader in using radio to reproduce4 sounds clearly. This process became known as frequency modulation5, or FM radio. FM radio provided better sound reproduction and less noise or interference than traditional AM radio. Armstrong also developed radio receivers that became widely used.

(MUSIC)

BARBARA KLEIN:

Many experts say station KDKA in Pittsburgh, Pennsylvania was the first American radio station. It broadcast results of the American presidential election in November, nineteen twenty. That is generally considered the start of professional radio broadcasting in the United States.

Soon, radio stations began to appear in other areas. In nineteen twenty-two, two stations in New York State joined together to broadcast the championship game of American baseball. The stations were connected by telephone lines. This permitted them to share the same program. It was one of the first examples of a radio network.

STEVE EMBER:

By the middle of the nineteen-twenties, there were two main radio networks in the United States. The National Broadcasting Corporation, NBC, was formed by the Radio Corporation of America. NBC became the first permanent national network. The other network was the Columbia Broadcasting System, called CBS. The networks provided programs to radio stations across the country. Local stations created very few programs. What listeners heard in New York was often heard in Los Angeles, California and other cities.

BARBARA KLEIN:

David Sarnoff was the man responsible for NBC. As a young man, Sarnoff had taught himself Morse code. He got a job with the Marconi Wireless6 Telegraph Company where he worked as a telegraph operator. He was on duty when the passenger ship Titanic7 sank in the Atlantic Ocean in nineteen twelve. Sarnoff helped the rescue effort by informing other ships about the accident. He understood that someone using radio could affect many lives. By nineteen twenty-one, Sarnoff was an official of the Radio Corporation of America. He pushed RCA to enter broadcasting. The company soon earned huge profits. Five years later, David Sarnoff helped create NBC. David Sarnoff developed the theory of broadcasting.

This was very different from the communication between two people speaking to each other on a telephone. Radio meant that someone could speak to millions of people.

(MUSIC)

STEVE EMBER:

William S. Paley developed another radio network. In nineteen twenty-eight, Paley left his family's business. He spent several hundred thousand dollars on several radio stations. These stations became known as the Columbia Broadcasting System. Paley's friends and advisers8 told him that he had made a huge mistake. They said his dream of building a large and important radio network would never come true. Paley did not listen to them. Instead, he went to see the heads of some of the largest American companies to get their financial support for his network.

Then, Paley searched for the best people he could find to produce the radio shows and news programming he wanted. He paid them well. William Paley was always looking for people with special skills. One night, he attended a show by the popular Tommy Dorsey Band. A young man with the group sang during the performance. His name was Frank Sinatra. Sinatra soon had his own program with CBS, Paley's radio network.

(MUSIC)

BARBARA KLEIN:

Radio was extremely popular in the United States between the late nineteen twenties and the early nineteen fifties. This period is known as the Golden Age of Broadcasting.

During this period, families gathered in their living rooms every night to listen to radio shows. Children hurried from school to hear shows created for them. In the daytime, millions of women listened to radio plays called soap operas. They were called soap operas because companies that make soap paid for the shows.

STEVE EMBER:

Radio influenced the way many people felt about their community and the world. It permitted them to sit at home and hear what was happening in other areas. During World War Two, people could hear the voices of world leaders, such as American President Franklin Roosevelt.

FRANKLIN ROOSEVELT: “When the dictators9 -- if the dictators -- are ready to make war upon us, they will not wait for an act of war on our part. They did not wait for Norway or Belgium or the Netherlands to commit an act of war.”

BARBARA KLEIN:

Edward R. Murrow

Listeners also could hear the voices of reporters covering World War Two. Edward R. Murrow became famous for reporting about the war. People sometimes could hear guns and bombs exploding during his report.

EDWARD R. MURROW: “The plane is still very high and it’s quite clear that he’s not coming in for his bombing run…Earlier this evening we could hear occasional—again, those were explosions overhead. Earlier this evening, we heard a number of bombs go sliding and slithering across, to fall several blocks away.”

STEVE EMBER:

In nineteen thirty-seven, Edward R. Murrow was the only representative of CBS in Europe. Murrow built a team of news reporters whose names would become well known to listeners. Murrow and reporter William Shirer made broadcasting history in nineteen thirty-eight. They organized a special broadcast with European reaction to the seizure10 of Austria by Nazi11 Germany. The show had reports from London, Berlin, Paris and Rome. It was a huge success.

BARBARA KLEIN:

In the United States, the rise of television in the nineteen fifties ended the Golden Age of Radio Broadcasting. More and more people started to watch television. Most of the popular shows disappeared from radio.

Many people believed television would cause radio broadcasting to become unimportant12. However, the number of radio listeners continues to grow. Most experts say radio will continue to be important during this century.

STEVE EMBER:

This program was written by George Grow. It was produced by Caty Weaver13. I'm Steve Ember.

BARBARA KLEIN:

And I'm Barbara Klein. Join us again next week for PEOPLE IN AMERICA in VOA Special English.


点击收听单词发音收听单词发音  

1 affected TzUzg0     
adj.不自然的,假装的
参考例句:
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
2 metropolitan mCyxZ     
adj.大城市的,大都会的
参考例句:
  • Metropolitan buildings become taller than ever.大城市的建筑变得比以前更高。
  • Metropolitan residents are used to fast rhythm.大都市的居民习惯于快节奏。
3 electronics 5q0xB     
n.电子器件,电子学,电子技术
参考例句:
  • About 45000 people worked in electronics in Scotland.苏格兰约有4.5万人在电子行业工作。
  • He wants to brush up his knowledge of electronics.他想温习他的电子学知识。
4 reproduce yVkxZ     
v.生育,繁殖,复制,重做
参考例句:
  • The machine can reproduce a key in two minutes.这机器能在两分钟内复制一把钥匙。
  • The picture will reproduce well.这照片会印得很清楚。
5 modulation mEixk     
n.调制
参考例句:
  • The soft modulation of her voice soothed the infant. 她柔和的声调使婴儿安静了。
  • Frequency modulation does not allow static to creep in. 频率调制不允许静电干扰混入。
6 wireless Rfwww     
adj.无线的;n.无线电
参考例句:
  • There are a lot of wireless links in a radio.收音机里有许多无线电线路。
  • Wireless messages tell us that the ship was sinking.无线电报告知我们那艘船正在下沉。
7 titanic NoJwR     
adj.巨人的,庞大的,强大的
参考例句:
  • We have been making titanic effort to achieve our purpose.我们一直在作极大的努力,以达到我们的目的。
  • The island was created by titanic powers and they are still at work today.台湾岛是由一个至今仍然在运作的巨大力量塑造出来的。
8 advisers d4866a794d72d2a666da4e4803fdbf2e     
顾问,劝告者( adviser的名词复数 ); (指导大学新生学科问题等的)指导教授
参考例句:
  • a member of the President's favoured circle of advisers 总统宠爱的顾问班子中的一员
  • She withdrew to confer with her advisers before announcing a decision. 她先去请教顾问然后再宣布决定。
9 dictators 0382e83ae9edcebdf228daece8fb2a5e     
独裁者( dictator的名词复数 ); 专制者; 发号施令者; 专横的人
参考例句:
  • These dictators have entrenched themselves politically and are difficult to move. 这些独裁者在政治上已经站稳了脚跟,很难推翻他们。
  • Almost all of the countries in Latin America were controlled by dictators. 当时几乎所有的拉丁美洲国家都由独裁者统治。
10 seizure FsSyO     
n.没收;占有;抵押
参考例句:
  • The seizure of contraband is made by customs.那些走私品是被海关没收的。
  • The courts ordered the seizure of all her property.法院下令查封她所有的财产。
11 Nazi BjXyF     
n.纳粹分子,adj.纳粹党的,纳粹的
参考例句:
  • They declare the Nazi regime overthrown and sue for peace.他们宣布纳粹政权已被推翻,并出面求和。
  • Nazi closes those war criminals inside their concentration camp.纳粹把那些战犯关在他们的集中营里。
12 unimportant OfHz34     
adj.不重要的,无意义的
参考例句:
  • Let's not quarrel about such unimportant matters.我们不要为这些小事争吵了。
  • Money seems unimportant when sets beside the joys of family life.与天伦之乐相比,金钱显得微不足道。
13 weaver LgWwd     
n.织布工;编织者
参考例句:
  • She was a fast weaver and the cloth was very good.她织布织得很快,而且布的质量很好。
  • The eager weaver did not notice my confusion.热心的纺织工人没有注意到我的狼狈相。
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