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The record of the pronoun of the music recorded in the analogue is media that are recorded the sound vibration in the resin of the disk as a ruggedness. It is that famous Edison that produced the record that starts in the world and operated actually. When reproducing, the needle is hit to the ditch, the vibration of the ditch is converted into the sound, and music is thrown.
Static electricity is generated because it is made of the resin, and dust is picked up. This dust and the wound were and there was what the record becomes fatal well. Moreover, mold might grow, too. It can be said that the record is a very delicate media.
Is SP boards four minutes in one side at the recording time?As for the long-playing record, the EP can record one side to one side respectively for 30 seconds for four minutes for 24 minutes for five minutes. Because the two-sided recording can be done, the time twice can be actually recorded.
There is not so much durability because it emits the sound as the needle coming in contact with the record. Recently, the player of contactless seems to have been put on the market.
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| Pronoun CD of the music recorded by digital is recorded the music data by a very detailed hollow, and is media that reproduce the reading sound by using the infrared rays laser. It will correspond to digital 1 and 0 whether this hollow is or doesn't exist. Music can be recorded in one size for about 80 minutes every 12cm in the diameter. Because music CD is decided that sampling frequency 44.1kHz, bit depth 16bit, and the stereo of number 2.0ch of channels are standards, any player can reproduce music CD. Longevity shortens more though it has been said for about 20 years the longevity of CD when it is media that foreign is cheap. It is possible to preserve it long so that there is not exposing to ultraviolet rays when CD is preserved if it preserves it. Recently, it is declining because the portable music player has gained power. |
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