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The sampling rate, (how many samples per second are stored) for a CD is...?

  • A.48.4 khz
  • B.22,050 hz
  • C.44.1 khz
  • D.48 khz

Answer: C

A CD samples at 44.1 kHz.

By the Nyquist theorem a sampling rate must be more than twice the highest frequency to be recorded; human hearing reaches about 20 kHz, so 44.1 kHz captures it with a margin for the anti-aliasing filter.

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