GCSE > Computer Science > Pearson IGCSE > GCSE Computer Science > COMPUTER SYSTEMS: Encoding and compression > Sound
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COMPUTER SYSTEMS: Encoding and compression

COMPUTER SYSTEMS: Network topologies

COMPUTER SYSTEMS: Wired and wireless networks, protocols, and layers

COMPUTER SYSTEMS: Threats to computer systems and networks

COMPUTER SYSTEMS: Operating systems and utility software

ALGORITHMS AND PROGRAMMING: Types of data

ALGORITHMS AND PROGRAMMING: Producing robust programs

ALGORITHMS AND PROGRAMMING: Designing, creating, and refining algorithms

ALGORITHMS AND PROGRAMMING: Artificial Intelligence (AI)

  • Sound is sampled at regular time intervals and stored in binary. A higher sample rate/bit depth means better sound, but a bigger file.
  • Important terms: 
    • Sample rate: number of samples per second (measured in Hz). 
    • Bit depth: bits used to store each sample (e.g. 8-bit, 16-bit). 
    • Duration: length of the sound in seconds.

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