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Direct Broadcast Satellite Communications: An MPEG Enabled Service by Donald C. Mead

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Chapter Nine MPEG 1 Audio Compression

The compact disc (CD) made digital audio a consumer product almost overnight. In a matter of two decades, it became difficult to even find a 33-rpm vinyl phonograph record. Consumers no longer had to put up with the annoying aspects of analog media such as flutter, wow, hiss, and other artifacts. Instead, they could have approximately an hour of flawless audio play on a small, compact, robust medium, with a player costing under $200.

To achieve its audio quality, the CD contains samples of an analog signal at 44.1 Ksamples per second and 16 bits per sample, or 705.6 Kbps. Because two analog signals are needed to create stereo, the 705.6 Kbps is multiplied by two, or 1,411.2 Kbps. If this is compared to the ...

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