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loudspeaker |
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loudspeakerElectromechanical device that converts electrical signals into sound waves, which are radiated into the air. The most common type of loudspeaker is the moving-coil speaker. Electrical signals from, for example, a radio are fed to a coil of fine wire wound around the top of a cone. The coil is positioned between the poles of a permanent magnet. When signals pass through it, the coil becomes an electromagnet, experiencing a force at right angles to the direction of the current and magnetic field, causing the coil to move. As the signal varies, the coil and the cone vibrate, setting up sound waves. If the electrical signals have a frequency of 2,000 hertz (Hz), sound with a frequency of 2,000 Hz is produced. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Washington, September 6 (ANI): German scientists have come up with a new concept for ultra-flat loudspeakers that can deliver full sound reproduction. With worldwide headquarters in Ipswich, England, Celestion designs, develops, and manufactures premium guitar and bass loudspeakers and high-quality professional audio drivers for use in sound reinforcement applications. in this rapidly modernizing country, one relic is hard to miss: a nationwide network of loudspeakers from which the communist government blasts propaganda at dawn and dusk, 30 minutes at a stretch, whether the public likes it or not. |
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