Representing Sound (AQA GCSE Computer Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why is sound described as an analogue signal?
Why is sound described as an analogue signal?
It varies continuously and smoothly
Why do computers need to convert analogue sound?
Why do computers need to convert analogue sound?
They only work with discrete digital values
What is sampling?
What is sampling?
Taking regular snapshots of sound waves
What does the computer measure during sampling?
What does the computer measure during sampling?
Amplitude of the sound wave
What is amplitude?
What is amplitude?
The height or strength of sound vibration
What happens to sample values after measurement?
What happens to sample values after measurement?
Converted into binary numbers
Why does sampling lose some original detail?
Why does sampling lose some original detail?
Time gaps miss what happens between samples
How does sampled sound appear compared to the original?
How does sampled sound appear compared to the original?
Blocky and stepped, not smooth
How is higher quality audio achieved?
How is higher quality audio achieved?
More frequent sampling and precise measures
What does discrete mean in digital data?
What does discrete mean in digital data?
Individual, separate values