acoustic telegraphy

тональное телеграфирование

Англо-русский железнодорожный словарь. 2013.

Смотреть что такое "acoustic telegraphy" в других словарях:

  • Acoustic telegraphy — was also known as harmonic telegraphy. During the 1800s inventors tried to find ways of sending multiple telegraph messages simultaneously over a single telegraph wire by using different audio frequencies for each message. These inventors… …   Wikipedia

  • Alexander Graham Bell — Infobox Person name = Alexander Graham Bell image size = 225px caption = Portrait of Alexander Graham Bell c. 1910 birth date = 3 March 1847 birth place = Edinburgh, Scotland, UK death date = death date and age|1922|8|2|1847|3|3|df=y death place …   Wikipedia

  • Timeline of the telephone — Below is a Timeline of the telephone that covers important dates in the history of the telephone.1844 to 1875*1844 Innocenzo Manzetti first mooted the idea of a “speaking telegraph” (telephone). *1849 Antonio Meucci demonstrates a communicating… …   Wikipedia

  • Multiplexing — General multiplex scheme: the ν input lines channels are multiplexed into a single fast line. The demultiplexer receives the multiplexed data stream and extracts the original channels to be transferred …   Wikipedia

  • Edison, Thomas Alva — born Feb. 11, 1847, Milan, Ohio, U.S. died Oct. 18, 1931, West Orange, N.J. U.S. inventor. He had very little formal schooling. He set up a laboratory in his father s basement at age 10; at 12 he was earning money selling newspapers and candy on… …   Universalium

  • History of the telephone — The history of the telephone chronicles the development of electrical technology that enabled bidirectional human speech conversations over distances farther than a person could shout.Telephone prehistoryMechanical devicesBefore the invention of… …   Wikipedia

  • Электромеханический фильтр — ЭМФ советского производства, предназначенный для выделения нижней боковой полосы в аппаратуре радиосвязи с промежуточной частотой 500 кГц. Ширина полосы пропускания  3,1 кГц. Механическ …   Википедия

  • Frequency-division multiplexing — (FDM) is a form of signal multiplexing where multiple baseband signals are modulated on different frequency carrier waves and added together to create a composite signal. Non telephoneFDM can also be used to combine multiple signals before final… …   Wikipedia

  • Controverse Gray et Bell sur l'invention du téléphone — Elisha Gray Alexander Bell La controverse Gray et B …   Wikipédia en Français

  • List of Edison patents — Below is a list of Edison patents. Thomas Edison was an inventor who, it is said, accumulated 1500 plus patents worldwide for his inventions. Nearly 1100 of Edison s patents were in the United States, but other patents were approved in countries… …   Wikipedia

  • Reginald Fessenden — Infobox Celebrity name = Reginald Fessenden caption = The Father of Radio Broadcasting birth date = birth date|1866|10|6|mf=y birth place = East Bolton, Quebec, Canada death date = death date and age|1932|7|22|1866|10|6|mf=y death place = Bermuda …   Wikipedia

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