The introduction of the CD in the early 1980s heralded a new era of consumer enjoyment of recorded sound. While the LP had served so well for many decades, the lingering problems of ticks, pops, and inevitable record wear had long militated against it. The emergence of a digital playback medium came after many years of development in the allied fields of highspeed computation and digital signal processing. At first the replication costs were high and the players were expensive. Now, as we enter the mid-1990s, the costs of both are fairly low.
KeywordsCompact Disc Scanning Electronic Microscope View Replication Cost Rotation Rotational Speed Constant Linear Velocity
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