--- A progress in work ---

Tuesday, July 28, 2009

Downloading music over the Internet via a phone line is not a new thing. In 1896, Thaddeus Cahill patented an apparatus for generating and distributing music electronically and until 1914 he fed music signals down AT&T's telephone lines with his Telharmoniums apparatus.Before that Elisha Gray transmitted music over a telephone line in 1876 - the same year the telephone was patented Alexander Graham Bell. Gray invented the first electronic music instrument in 1874, calling it the "Musical Telegraph. Other claims for the invention of the telephone include Antonio Meucci, Johann Philipp Reis, Innocenzo Manzetti, Charles Bourseul, Amos Dolbear, Sylvanus Cushman, Daniel Drawbaugh, Edward Farrar, and James McDonough. Alexander Graham Bell also designed an experimental "Electric Harp" for speech transmission over a telephone line using similar technology to Gray's. Bell also was a teacher of speech to the deaf. In 1879 he created an audiometer to detect hearing loss. That is why the degrees of loudness came to be measured in bels or decibels.