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Index CD concepts Sound reproduction concepts Reference Rossing Physics Teacher, Dec. 87 | ||
HyperPhysics***** Sound ***** Optics | Go Back |
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Index CD concepts Sound reproduction concepts Reference Rossing Physics Teacher, Dec. 87 | |||
HyperPhysics***** Sound ***** Optics | Go Back |
CD Storage CapacityA compact disc can store more than 6 billion bits of binary data. This is equivalent to 782 megabytes, and at 2000 characters per page this is equivalent to about 275,000 pages of text (Rossing). Because the analog-to-digital conversion for making CD's samples sound waveforms at 44.1 kHz, the amount of data involved in the recording of high-fidelity sound is very large. The 12 cm diameter compact disc can hold 74 minutes of digital audio which has a frequencies over the full audible range of 20-20,000 Hz. The signal-to-noise ratio and the dynamic range can exceed 90 decibels. |
Index CD concepts Sound reproduction concepts Reference Rossing Physics Teacher, Dec. 87 |
HyperPhysics***** Sound ***** Optics | Go Back |