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Computer Science

GCSE · AQA

QuestionsFlashcards

Cyber Security Threats
Social Engineering
- What Social Engineering Is
  4
- Blagging, Phishing & Shouldering
  5
Malware
- What Malware Is
  2
- Viruses, Trojans & Spyware
  3
Detecting & Preventing Threats

Analogue to Digital: Sampling Flashcards

All 5 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.
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.
Why is a sampled digital sound never an exact copy of the original analogue sound wave?: Samples are only taken at intervals, and each is rounded to a value the sample resolution can store, so the digital wave only approximates the original.
What is a sample?: A measure of the amplitude of a sound wave at a point in time.
Is sound analogue or digital?: Analogue: a continuously changing wave. It must be converted to digital (binary) form before a computer can store or process it.