Electromagnetism in Speakers DOCX

Title	Electromagnetism in Speakers
Author	Niki Leuschner
Pages	5
File Size	82.9 KB
File Type	DOCX
Total Downloads	16
Total Views	78

Summary

Electromagnetism in Speakers In the late 1800’s, any loudspeaker was considered as exotic, extremely rare and valuable. Today, most of us take the wonder of reproduction of sound as a matter of course. Before the invention of speakers, music industries as we know them today did not exist. Furthermor...

Description

Figure 1 How Speakers Work Electromagnetism in Speakers In the late 1800's, any loudspeaker was considered as exotc, extremely rare and valuable. Today, most of us take the wonder of reproducton of sound as a mater of course. Before the inventon of speakers, music industries as we know them today did not exist. Furthermore, one could say that the music industry did not exist at all. It was Ernst Werner von Siemens, also known as Werner von Siemens (December 13, 1816 - December 8, 1892), a German inventor and industrialist. He was a founder and director, Siemens and Halske, a frm did made electrical apparatus. Ernst Siemens patented the frst loudspeaker on December 14, 1877. He was the frst to describe the "dynamic" or moving-coil transducer, with a circular coil of wire in a magnetc feld and supported so that it could move axially.1 The inventon of loudspeaker completely revolutonized the music industry as it exists today. Without its inventon, people had to visit casinos, restaurants, bars and etc. to enjoy the sound of music. Nowadays, music is transportable. The music industry is in a well-publicized state of upheaval. The emergences of digital distributon and consumpton technologies (such as the iPod, iTunes and Spotfy) have radically disturbed established systems of producton and consumpton. Benefts of those changes have dropped unevenly and most cultural commentary has focused on problems caused to the global record industry. Moreover, one of the peculiar features of the music industry is the contnuity between localized "para-industrial acts" and mainstream commercial practces. The importance of geographic and genre-based scenes means that small music economies have a greater signifcance for the structural organizaton of the music industry than in other cultural industries: "in the music industry... the small is as signifcant as the big" (Frith, 2000).2 Electromagnets are magnets which run on electricity. Diferent then permanent magnets, the strength of electromagnets may be changed easily by manipulatng the amount of electric currents fowing through it. Furthermore, the poles of electromagnets may even be inversed by inversing the fow of electricity. Electromagnets work due to an electric current which produces a magnetc feld. 3 1 "Electrostatc Loudspeaker History." History of Electrostatc Speakers. N.p., n.d. Web. 18 Sept. 2013. 2 "Something Important Is On The Horizon In The Music Business." A VC:. N.p., n.d. Web. 18 Sept. 2013. 3 "Electromagnets." BBC News. BBC, n.d. Web. 17 Sept. 2013....