Topic 2.5 — Component 4
The Numbers That Come Up
Five number families the exam tests without a calculator: pitch and period (A4 = 440 Hz, octave doubling), decibels and dynamic range, tempo in milliseconds, and file size. Every value on this page is chosen to be doable in your head — the exam bans calculators here, so quick, correct arithmetic is itself part of what earns the marks.
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