Data storage
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An audio engineer is setting up a digital recording system to record a live performance in stereo (2 channels). The audio is sampled at a frequency of 96 kHz96\text{ kHz}96 kHz with a sample resolution of 24 bits24\text{ bits}24 bits per sample.

Which of the following expressions correctly calculates the storage capacity required, in mebibytes (MiB\text{MiB}MiB), to store an uncompressed 15-minute15\text{-minute}15-minute audio recording?

2×96,000×24×158×10242 \frac{2 \times 96,000 \times 24 \times 15}{8 \times 1024^2} 8×102422×96,000×24×15​
2×96,000×24×9008×10242 \frac{2 \times 96,000 \times 24 \times 900}{8 \times 1024^2} 8×102422×96,000×24×900​
96,000×24×9008×10242 \frac{96,000 \times 24 \times 900}{8 \times 1024^2} 8×1024296,000×24×900​
2×96,000×24×90010242 \frac{2 \times 96,000 \times 24 \times 900}{1024^2} 102422×96,000×24×900​

Data storage Questions

Practise OCR GCSE Computer Science Data storage with exam-style questions for GCSE Computer Science. 42 questions, matched to the OCR GCSE Computer Science (J277) specification and written in Component 01 and Component 02 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Data storage Questions

  1. GCSE
  2. /Computer Science
  3. /Data storage