Sampling and Storing Sound (AQA GCSE Computer Science): Flashcards
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Practise the cards
14 cards from this deck
What type of signal are sound waves?
What type of signal are sound waves?
Analogue
What type of data do computers work with?
What type of data do computers work with?
Digital (discrete)
Process of converting analogue sound to digital
Process of converting analogue sound to digital
Sampling
What is amplitude in sound waves?
What is amplitude in sound waves?
Height or strength of sound vibration
What is a sample?
What is a sample?
Digital snapshot of sound at a specific moment
Analogue signal characteristic
Analogue signal characteristic
Continuously varying, can take any value
Digital values characteristic
Digital values characteristic
Discrete, separate and distinct
Discrete values meaning
Discrete values meaning
Individual, separate values (not continuous)
What samples are converted into for storage
What samples are converted into for storage
Binary numbers
What sampling measures at regular time intervals
What sampling measures at regular time intervals
Amplitude of the sound wave
Why sampling loses original detail
Why sampling loses original detail
Limited precision and time gaps between samples
Precision limitation in sampling
Precision limitation in sampling
Amplitude stored to nearest whole number
Time gap issue in sampling
Time gap issue in sampling
Only one sample per period, missing what's between
How to create higher quality digital audio
How to create higher quality digital audio
More frequent sampling and higher precision