Saturday, December 2, 2017
The Invention of the LP
For the compact disc-age person, the LP was an analog sound storage medium, a vinyl record format, characterized by a speed of 33 1/3 rpm, a 12 or 10-inch diameter, and use of the "microgroove" groove specification.
At the time the LP was introduced, nearly all phonograph records for home use were made of an abrasive shellac compound, employed a much larger groove, and played at approximately 78 rpm, limiting the playing time of a 12-inch diameter record to less than five minutes per side. The new product was a fine-grooved disc made of vinyl. Originally 23 minutes per side, it was later increased by several minutes.
Although the LP was suited to classical music because of its extended continuous playing time, it also allowed a collection of ten or more pop music recordings to be put on a single disc. Previously, such collections, as well as longer classical music broken up into several parts, had been sold as sets of 78 rpm records in a specially imprinted "record album" consisting of individual record sleeves bound together in book form. The use of the word "album" persisted for the one-disc LP equivalent.
Today, technology is at an all-time high. In so many ways, sound technology is great and the way we listen to music is great. Now, there is digital audio tape (DAT), digital audio broadcasting, HD Radio tuners, which can be connected together with fibre optic TOSLINK cables, universal serial bus (USB) ports (including one to play digital audio files), or the awesome technology known as Wi-Fi, Blu-Ray and Bluetooth. Another modern component is the music server consisting of one or more computer hard drives that hold music in the form of computer files where the music is stored in an audio file. The computer playback of recorded audio can serve as an audiophile-quality source for a hi-fi system.
Some people who were around during the vinyl era appreciate where sound technology has gone. Some of us also moss the vinyl days.
Dr. Peter Carl Goldmark was born in Budapest on December 2, 1906. He died on December 7, 1977 at Port Chester, New York.
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