By Antonym
Sat Jun 23, 2007 4:03 pm
make your ring modulation hum in tune with your song:
The note-naming convention specifies a letter, any accidentals (sharps/flats), and an octave number. Any note is an integer of half-steps away from middle A (A4). Let this distance be denoted n. If the note is above A4, then n is positive; if it is below A4, then n is negative. The frequency of the note (f), measured in Hz, is then:
f = 2n/12 × 440 Hz
For example, one can find the frequency of C5, the first C above A4. There are 3 half-steps between A4 and C5 (A4 → A♯4 → B4 → C5), and the note is above A4, so n = +3. The note's frequency is:
f = 23/12 × 440 Hz ≈ 523.2511 Hz.
you can be off by decimal points and still get a convincing result, i imagine.
The note-naming convention specifies a letter, any accidentals (sharps/flats), and an octave number. Any note is an integer of half-steps away from middle A (A4). Let this distance be denoted n. If the note is above A4, then n is positive; if it is below A4, then n is negative. The frequency of the note (f), measured in Hz, is then:
f = 2n/12 × 440 Hz
For example, one can find the frequency of C5, the first C above A4. There are 3 half-steps between A4 and C5 (A4 → A♯4 → B4 → C5), and the note is above A4, so n = +3. The note's frequency is:
f = 23/12 × 440 Hz ≈ 523.2511 Hz.
you can be off by decimal points and still get a convincing result, i imagine.
