Y9

4p: Explain how attributes such as sampling frequency and sample size affect characteristics such as representation size and perceived quality, and the trade-offs involved

Keywords:
Data Representation
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KeywordDefinition
perceived qualitythe more closely the digital representation of a sound matches the original analogue sound wave, the better quality the sound will appear to people listening
representation sizethe number of bytes needed to store or transfer an audio recording
sample sizethe number of bits used to represent each sample of a sound wave. A higher value means the digital representation is closer to the original analogue sound but the recording will take up more bytes of storage.
sampling frequencythe number of samples of a sound wave taken every second. A higher value means the digital representation is closer to the original analogue sound but the recording will take up more bytes of storage.
trade-offa balancing act where improving one thing will have a negative effect elsewhere
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