Question 1

What is a musical interval?

Accepted Answer

A musical interval is the pitch distance between two notes, measured in semitones or cents. An octave = 12 semitones = 1200 cents.

Question 2

How do I convert BPM to milliseconds?

Accepted Answer

Beat duration (ms) = 60,000 / BPM. At 120 BPM, each beat = 500ms. Useful for setting delay times that sync with music tempo.

Question 3

What frequencies are musical notes?

Accepted Answer

Starting from A4=440 Hz: each semitone multiplies by ≈1.0595 (12th root of 2). Middle C (C4) ≈ 261.6 Hz. Human hearing: 20 Hz - 20,000 Hz.

Question 4

Why use cents instead of Hz?

Accepted Answer

Cents represent perceived pitch difference consistently across all frequencies. A 10-cent difference sounds the same whether at 100 Hz or 1000 Hz, while Hz differences don't.

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