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Computer Science

GCSE · OCR

QuestionsFlashcards

Identifying & Preventing Threats to Computer Systems & Networks
- Forms of Attack on a Network
  8
- Methods of Preventing a Network Attack
  10

Operating Systems & Utility Software
- The Purpose & Functionality of Operating Systems
  7
- The Purpose & Functionality of Utility Software
  6

Ethical, Legal, Cultural & Environmental Impact
- Impacts of Digital Technology on Wider Society
  7
- Legislation in Computer Science
  8

Boolean Logic Diagrams
- Boolean Logic Diagrams
  9
- Combining Boolean Operators
  7

Representing Sound Flashcards

All 6 cards in this deck

What is sampling in the context of sound?: Measuring the amplitude of an analogue sound wave at regular intervals and storing each measurement as a binary value.
What is the sample rate of a sound recording?: The number of samples taken per second, measured in hertz (Hz).
What is bit depth in a sound recording?: The number of bits used to store each sample.
What is the effect of increasing the sample rate of a sound file?: The recording is closer to the original sound so playback quality improves, but the file size increases.
True or false? Doubling the bit depth of a sound recording doubles its file size.: True. File size = sample rate $\times$ duration $\times$ bit depth.
Why must analogue sound be sampled before a computer can store it?: Computers can only store binary, so the analogue wave must be converted into digital (binary) values.