The introduction of the Compact Disc 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 high-speed computation and digital signal processing. At first the replication costs were high, and the players were expensive. Now, as we enter the decade of the 1990s, the costs of both are fairly low. Only the continuing high market price of CDs seems to hold back wholesale adoption of the medium. Even so, unit sales of CDs exceeded those of LPs in 1987 and have been growing steadily since that time.
KeywordsCompact Disc Unit Sale Scanning Electronic Microscope View High Market Price Replication Cost
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