AQA · 7517 (AS 7516) · Version 1.6, July 2023
A-level Computer Science
Which lectures teach each point of this specification, and where.
SpecificationAQASection 3 is the AS content and section 4 the A-level content; sound representation appears in both. OCR's A Level Computer Science (H446) has no sound or sampling content. Checked against the board's specification (Version 1.6, July 2023) on 28 October 2026. Each point is summarised in our words; its page number leads to the exact wording. This mapping is ours: no exam board has endorsed this site, and the lectures do not cover the whole specification.
| Spec point | What it asks for | Level | Taught in | Coverage |
|---|---|---|---|---|
| 3.5.6.5 (AS) and 4.5.6.7 page 27 and 71 | digital representation of sound: sample resolution, sampling rate, the Nyquist theorem; sample size in bytes Lecture 1 covers the sampling rate and the Nyquist theorem; sample resolution is Lecture 2. | AS and A-level | Lecture 1 Sampling The sampling theorem | partly covered |
| 3.5.6.5 (AS) and 4.5.6.7 page 27 and 71 | sample resolution; sample size in bytes | AS and A-level | Lecture 2 (coming) | covered |
| 3.5.6.3 (AS) and 4.5.6.3 page 26 and 69-70 | the principles of an ADC and a DAC | AS and A-level | Lecture 4 (coming) | covered |