Image and Sound Data Representation

Part of Images & Sound · Section 2 of 12

DiagramUnit: 3.3 Data RepresentationGCSE

This diagram covers Image and Sound Data Representation within Images & Sound for GCSE Computer Science. Revise Images & Sound in 3.3 Data Representation for GCSE Computer Science with 18 exam-style questions and 16 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 2 of 12 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

Image and Sound Data Representation

Data representation diagram showing image pixels with RGB colour values (red, green, blue each 0-255) in a bitmap grid, and sound digitisation showing an analog wave being sampled at regular intervals with sample rate and bit depth labels, plus file size formulas for both

Practice questions for Images & Sound

What does colour depth refer to in a digital image?

A. The number of pixels in the image
B. The number of bits used to represent each pixel's colour
C. The physical dimensions of the image in centimetres
D. The number of samples taken per second

1 markfoundation

Explain the effect of increasing colour depth on a digital image. Refer to both file size and image quality in your answer.

3 marksstandard

Quick recall flashcards

The Digital Camera Trick

Deep Dive: Digitizing the Analog World

18 questions on Images & Sound — practise free

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