How Is Sound Recorded?

Nearing the end of the article, I referenced World Book Student to find out how sound is recorded. To link to this section click here. To sum up the sub, Thomas Edison invented the microphone. The invention started out as a small metal cylinder wrapped in tin foil. It could only replay the sound. Then, Emile Berliner, a German inventor, created a way that you could transfer a sound on to a small disc instead of a cylinder. This lead to the invention of compact discs, or CD'S. But, before that invention, there was the tape recorder. These were commonly used in recording industries. It wasn't until the mid-1950's that tape recorders were a household item. Yet another thanks to World Book, my project wouldn't be much of anything without it. For works cited, you can reference "How Are Sound Waves Created?".