Tape recorders used to be a big part of society before modern technology became relevant. The first magnetic recording device was invented in 1898 and has only escalated since then. Tape recorders use magnetic recording technology in order to record and playback audio data. These devices are not used as often today as they were in the past but some cars still require a cassette in order to play audio. As we break down a tape recorder, two main components become relevant. These are the recorder itself and the tape that is used to store the material.
Stated on the website, https://www.brighthubengineering.com/machine-design/55228-how-tape-recorders-work/
the tape itself is coated in ferric oxide powder which allows for the tape to become magnetized. The entire purpose of a tape recorder revolves around electromagnets. In order to get tape recorders to work, the tape must spin from one spool to the other. This then sends an electric current through the wire which then create a magnetic field. Here is a video which explains in depth how a magnetic tape recorder really works: https://www.youtube.com/watch?v=8o5racwCzck
While the tape recorder becomes magnetized, it has to erase all existing content on it before it is broadcasted. https://nationalmaglab.org/education/magnet-academy/watch-play/interactive/tape-recorder tells us that while recording a sound, the magnetic domains shift around the particles which then embed a unique sound/pattern into the tape. While the sound is being played back, the magnetic fields are inducing a current. This voltage then implants itself as a magnetic signal on the tape which is then passed through a circuit in order to broadcast the true audio.
No comments:
Post a Comment