 |
 A 12-inch LP vinyl record | |
| Media type | Audio playback |
|---|---|
| Encoding | Analog grooves |
| Capacity | Typical 22-26 minutes per side; 2 sides |
| Read mechanism | Stylus |
| Dimensions | 12 in (30 cm); 10 in (25 cm) |
| Weight | 90-200 grams |
| Usage | Audio storage |
| Extended from | 1948 |
AnLP record (orlong-play record) is a type ofgramophone record. It is a 33⅓rpmvinyl disc with little lines called grooves that go around the center. It is generally either 10- or 12-inches in diameter. They are played by aturntable. A turntable spins the record while a lever with a smallneedle on the bottom. The needle goes in between the little grooves. When this happens,music is played.
The LP record was introduced byColombia Records in 1948. It then became the new way themusic industry releasedrecordings. In the 1960s,cassettes were introduced. This was a cheaper way to record music and not hear thenoise that came from the LP record. However, the LP record continued to be more popular until the 1970s when thecompact disc was introduced.
The long-playing record is ananalog recording format. Thedigital recording of sound was only made practical by the technical advances inmicroprocessors andcomputing which occurred in the 1970s and 1980s. LP's sound quality, it contains moredistortion than many other modern music formats.
