Harmonic Series of A1 (55 Hz) — 8 Harmonics
The harmonic series of 55 Hz (A1) generates partials at 55, 110, 165, 220, 275, 330, 385, and 440 Hz.
How to use this tool
- Enter fundamental frequency and number of harmonics in the fields above.
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- Read your harmonic frequencies and the full breakdown beneath it.
55 Hz is the A one octave below bass guitar standard tuning; its harmonics align perfectly with the piano's lower registers.
Frequently asked questions
- What is the harmonic series?
- The harmonic series is the sequence of frequencies that are integer multiples of a fundamental: f, 2f, 3f, 4f, ... These overtones give instruments their characteristic tone colour.
- Which harmonic is the octave?
- The 2nd harmonic (2× fundamental) is exactly one octave above. The 3rd harmonic is an octave + perfect fifth above.