The LP (from long playing [2] or long play) is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 33⁄ rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk.

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The LP, or Long Play record, marked a big step forward in music sharing. It was first introduced by Columbia Records in 1948. This format let artists share more of their music on one vinyl disc, offering better sound quality than before. So, what is an LP in music? It’s mainly 12-inch vinyl records that spin at 33 1/3 RPM.

2022年7月12日 · 这两种PVC塑料唱片才是如今我们常见的“黑胶唱片”。 33转唱片因较长的播放时间而被称为—“Long Play”长时间唱片，45转因较短的播放时间被称为——“Extended Play”拓展唱片，这就是LP和EP的由来。

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1931年 美国无线电公司 (RCA)试制成功331/3转/分的密纹唱片 (LongPlay，简称LP)。 原来唱片转速为每分钟78转，密纹唱片为每分钟33.5转。 大大延长了播放时间。 在材料上，由于氯醋共聚树脂代替了紫胶树脂，唱片的颗粒变细，微小的振动也能录制下来，这样高保真的效果得到进一步体现。 1945年 英国台卡公司用预加重的方法扩展高频录音范围，录制了78转/分的粗纹唱片 (StandardPlay，简称SP)。 1948年开始，33又3分之1转的唱片发行，经过几年的发展，单面 …

2020年10月21日 · LP is an abbreviation for ‘long-playing record’. The term, LP (long play), used to refer to a 33 1/3 rpm microgroove vinyl record. These records act as a storage medium for analogue sound. The sounds stored on this record are the songs you listen to and, therefore, make up the LP.

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2024年11月20日 · LP stands for long play or long-playing record. It’s a format of vinyl record introduced in 1948 by Columbia Records. Before LPs, most records could only hold one song per side. LPs changed that by allowing up to 45 minutes of music on a single disc, with around 22 minutes per side.

EPs (Extended Play) held 3-6 tracks with a 20-minute playtime, while LPs (Long Play) held 7-12 tracks with a 40-minute playtime. But today streaming platforms have changed the nuances and meaning behind releasing a full-length album versus releasing a shorter EP.