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2023 AQA A LEVEL COMPUTER SCIENCE QUESTION PAPER 2 [7517/2]
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2023 AQA A LEVEL COMPUTER SCIENCE QUESTION PAPER 2 [7517/2]
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2023 AQA A LEVEL COMPUTER SCIENCE QUESTION PAPER 2 [7517/2] 


 


0 1 . 1 A sound is sampled and recorded digitally. The sound is sampled at a rate of 48 000 
samples per second (Hz) for 3 minutes using a 16-bit sample resolution.
Calculate the size of the digital recording, giving your answer in mebibytes.
Give your answer rounded to 2 decimal places.
You should show your working.
[2 marks]
Answer mebibytes
0 1 . 2 The highest frequency component in a different sound is 15 000 Hz. 
What is the minimum sampling rate that should be used when recording this sound to 
ensure that all the frequencies in the original waveform are preserved, so that when 
the recording is played back the original sound is recreated accurately?
[1 mark]

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Author Future Focus
Published 30 Jul 2024
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2023 AQA A LEVEL AQA A LEVEL COMPUTER SCIENCE SCIENCE A LEVEL COMPUTER SCIENCE AQA A LEVEL COMPUTER 7517/2 2023 COMPUTER SCIENCE COMPUTER QUESTION PAPER 2 7517/2 COMPUTER SCIENCE
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