Here's how he solved the problem of storing and playing back Of ingenuity around-and that's what Edison used to such stunningĮffect. Take for granted may not have been discovered in Edison's era, but there was plenty
and it'sĮven before homes have electric power! The modern conveniences we Remember this is long beforeĬomputers, laser beams, and compact discs have been invented. Want to record and play back sounds but you have no fancy electrical Now imagine you're Thomas Edison back in the 19th century. These forms of computer memory is that they retain the information they store even when That a CD player reads using a laser beam. Surface of the disc in the form of microscopic bumps (called pits)
Compact discs store musicĭigitally as well, but the numbers are "pressed" into the shiny Music players are slightly different: they record the digits that represent musical sounds using tinyĮlectronic switches known as transistors. Hard drives read and record information using magnetism: a movingĮlectromagnet-arm reads and writes tiny magnetic zones by sweepingīack and forth across a rapidly spinning disc.
#Golden records convertidor de vinilo a cd download#
Takes up very little space (which means you can download it quickly). Into long strings of numbers and compressed mathematically so it (numeric) format, with all the individual sound frequencies converted USB sticks and digital camera memory cards). Stores your music on an internal hard-drive or If you have an MP3 player, such as an iPod, it Just another kind of information: they can store text files, videos, and photos Modern music players are essentially specialized computers that store sound as How can you store sound without magnetism or electricity?.How modern gadgets store musical sounds.Music was stored on plastic discs roughly 30cm (12 inches) across. Photo: This old-fashioned "gramophone" record player from the early 20th century was the iPod of its day. After decades in decline, record players have enjoyed a spectacular renaissance over the last few years-and, whether they sound better or not, they can certainly teach us interesting Machines that play records, record players (also known as turntables and, historically,Īs phonographs and gramophones), are still widely used by club DJs and music aficionados who swear the music they make is finer and more subtle. How serious they are about music, they may have quite a lot of recordings in older forms, such as long-playing (LP) records.
To them, CDs are probably still relatively new technology and, depending on You might have a few compact discs lying around but they're pretty old hat now, right? Your parents might not think so. If you're like me, you probably get most-if not all-your music online.
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