Standard equal-tempered frequencies (nonfiction)
From Gnomon Chronicles
Standard equal-tempered frequencies
Standard equal-tempered frequencies (A4 = 440 Hz) you can feed into any of the generators:
- C4 (middle C) ≈ 261.63 Hz
- C♯4/D♭4 ≈ 277.18 Hz
- D4 ≈ 293.66 Hz
- D♯4/E♭4 ≈ 311.13 Hz
- E4 ≈ 329.63 Hz
- F4 ≈ 349.23 Hz
- F♯4/G♭4 ≈ 369.99 Hz
- G4 ≈ 392.00 Hz
- G♯4/A♭4 ≈ 415.30 Hz
- A4 = 440.00 Hz
- A♯4/B♭4 ≈ 466.16 Hz
- B4 ≈ 493.88 Hz
- C5 ≈ 523.25 Hz
(Double or half for other octaves.)
Quick tips for a music generator
Prefer mono 44.1 kHz or 48 kHz 16-bit WAV for simplicity and compatibility.
Pure sine waves have no harmonics → clean, pure tones; add a tiny amplitude envelope (attack/release) in code if you want them less clicky.
For a full chromatic or C-major set, generate one file per note at the frequencies above, or start with the GitHub piano set and replace with pure sines later.
All of the linked generators and the GitHub repo are free for personal / open-source use; check individual Freesound licenses if you redistribute.
