Изобретения и изобретатели. Учебно-справочное пособие для изучающих английский язык - страница 16
reveal открывать; показывать
desire желать
enhance усиливать, улучшать
intend намереваться
possess обладать
resemble напоминать
suit подходить, соответствовать
EXERCISES
a. Complete the table using information from the text.
b. Complete the diagram using information from the text.
Write a summary of the text using the table and the diagram above as a support.
The main points of your summary should include history of the invention of the saxophone and the elements of its construction.
Answer the following questions:
a. What kind of music is the saxophone associated with?
b. What kind of music was the saxophone originally intended for?
c. Why did Sax name the instrument “the voice of Sax”?
d. What qualities did Sax try to harness in his instrument?
2.3 Microphone
A microphone, sometimes referred to as a mike or mic, is an acoustic to electric transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones, tape recorders, hearing aids, motion picture production, live and recorded audio engineering, in radio and television roadcasting and in computers for recording voice and numerous other computer applications.
Invention. The word “microphone” (Greek mikros “small” and phone “sound”) originally referred to a mechanical hearing aid for small sounds.Invention of a practical microphone was crucial to the early development of the telephone system. Emile Berliner[3] invented the first microphone on March 4, 1877, but the first commercially practical microphone was the carbon microphone invented in October, 1876 by Thomas Edison. Carbon microphones found use as early telephone repeaters, making long distance phone calls possible in the era before vacuum tubes. Many early developments in microphone design took place at Bell Laboratories.
All microphones capture sound waves with a thin, flexible diaphragm (or ribbon in the case of ribbon microphones). The vibrations of this element are then converted by various methods into an electrical signal that is an analog of the original sound. Most microphones in use today use electromagnetic generation (dynamic microphones), capacitance change (condenser microphones) or piezoelectric generation to produce the signal from mechanical vibration.