3(a)Sound RepresentationEasy1 mark
An animation is a sequence of bitmap images with a sound recording played at the same time.
The sound is recorded with a sampling resolution of 2 bytes.
State what is meant by a sampling resolution of 2 bytes.
May/June 2026 Paper 13
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3(b)(i)Image RepresentationMedium3 marks
Explain how the data for the bitmapped images are encoded.
Answer
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3(b)(ii)Image RepresentationEasy2 marks
The bitmap images have a bit depth of 2 bytes. Each image is 2048 pixels wide by 1536 pixels high. One second of video contains eight individual bitmap images.
There is no sound recording in this part of the video.
Calculate an estimate for the file size of one second of the video in mebibytes (MiB).
3(c)(i)Data CompressionHard4 marks
The sound and images are compressed independently before being transmitted over the internet to public cloud storage.
Explain the different ways that lossless compression can be used to compress the images and the sound file.
Image file
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Sound file
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3(c)(ii)Cloud Computing Cloud Storage VirtualisationEasy1 mark
The sound and images are compressed independently before being transmitted over the internet to public cloud storage.
State what is meant by a public cloud.
3(c)(iii)Cloud Computing Cloud Storage VirtualisationEasy2 marks
Give two benefits to the animation creator of using public cloud storage for the animation.
Answer
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